Commit Graph

1961 Commits

Author SHA1 Message Date
Peter Yoon
670c6da635 Merge branch 'android14-5.15' into arpi-5.15.92 2023-02-28 17:56:07 +09:00
Dom Cobley
e9e421392e Merge remote-tracking branch 'stable/linux-5.15.y' into rpi-5.15.y 2023-02-01 17:30:22 +00:00
Greg Kroah-Hartman
e3d8fe0993 Merge 5.15.91 into android14-5.15
Changes in 5.15.91
	memory: tegra: Remove clients SID override programming
	memory: atmel-sdramc: Fix missing clk_disable_unprepare in atmel_ramc_probe()
	memory: mvebu-devbus: Fix missing clk_disable_unprepare in mvebu_devbus_probe()
	dmaengine: ti: k3-udma: Do conditional decrement of UDMA_CHAN_RT_PEER_BCNT_REG
	arm64: dts: imx8mp-phycore-som: Remove invalid PMIC property
	ARM: dts: imx6ul-pico-dwarf: Use 'clock-frequency'
	ARM: dts: imx7d-pico: Use 'clock-frequency'
	ARM: dts: imx6qdl-gw560x: Remove incorrect 'uart-has-rtscts'
	arm64: dts: imx8mm-beacon: Fix ecspi2 pinmux
	ARM: imx: add missing of_node_put()
	HID: intel_ish-hid: Add check for ishtp_dma_tx_map
	arm64: dts: imx8mm-venice-gw7901: fix USB2 controller OC polarity
	soc: imx8m: Fix incorrect check for of_clk_get_by_name()
	reset: uniphier-glue: Use reset_control_bulk API
	reset: uniphier-glue: Fix possible null-ptr-deref
	EDAC/highbank: Fix memory leak in highbank_mc_probe()
	firmware: arm_scmi: Harden shared memory access in fetch_response
	firmware: arm_scmi: Harden shared memory access in fetch_notification
	tomoyo: fix broken dependency on *.conf.default
	RDMA/core: Fix ib block iterator counter overflow
	IB/hfi1: Reject a zero-length user expected buffer
	IB/hfi1: Reserve user expected TIDs
	IB/hfi1: Fix expected receive setup error exit issues
	IB/hfi1: Immediately remove invalid memory from hardware
	IB/hfi1: Remove user expected buffer invalidate race
	affs: initialize fsdata in affs_truncate()
	PM: AVS: qcom-cpr: Fix an error handling path in cpr_probe()
	arm64: dts: qcom: msm8992: Don't use sfpb mutex
	arm64: dts: qcom: msm8992-libra: Add CPU regulators
	arm64: dts: qcom: msm8992-libra: Fix the memory map
	phy: ti: fix Kconfig warning and operator precedence
	NFSD: fix use-after-free in nfsd4_ssc_setup_dul()
	ARM: dts: at91: sam9x60: fix the ddr clock for sam9x60
	amd-xgbe: TX Flow Ctrl Registers are h/w ver dependent
	amd-xgbe: Delay AN timeout during KR training
	bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation
	phy: rockchip-inno-usb2: Fix missing clk_disable_unprepare() in rockchip_usb2phy_power_on()
	net: nfc: Fix use-after-free in local_cleanup()
	net: wan: Add checks for NULL for utdm in undo_uhdlc_init and unmap_si_regs
	net: enetc: avoid deadlock in enetc_tx_onestep_tstamp()
	sch_htb: Avoid grafting on htb_destroy_class_offload when destroying htb
	gpio: use raw spinlock for gpio chip shadowed data
	gpio: mxc: Protect GPIO irqchip RMW with bgpio spinlock
	gpio: mxc: Always set GPIOs used as interrupt source to INPUT mode
	wifi: rndis_wlan: Prevent buffer overflow in rndis_query_oid
	pinctrl/rockchip: Use temporary variable for struct device
	pinctrl/rockchip: add error handling for pull/drive register getters
	pinctrl: rockchip: fix reading pull type on rk3568
	net: stmmac: Fix queue statistics reading
	net/sched: sch_taprio: fix possible use-after-free
	l2tp: Serialize access to sk_user_data with sk_callback_lock
	l2tp: Don't sleep and disable BH under writer-side sk_callback_lock
	l2tp: convert l2tp_tunnel_list to idr
	l2tp: close all race conditions in l2tp_tunnel_register()
	octeontx2-pf: Avoid use of GFP_KERNEL in atomic context
	net: usb: sr9700: Handle negative len
	net: mdio: validate parameter addr in mdiobus_get_phy()
	HID: check empty report_list in hid_validate_values()
	HID: check empty report_list in bigben_probe()
	net: stmmac: fix invalid call to mdiobus_get_phy()
	pinctrl: rockchip: fix mux route data for rk3568
	HID: revert CHERRY_MOUSE_000C quirk
	usb: gadget: f_fs: Prevent race during ffs_ep0_queue_wait
	usb: gadget: f_fs: Ensure ep0req is dequeued before free_request
	Bluetooth: Fix possible deadlock in rfcomm_sk_state_change
	net: ipa: disable ipa interrupt during suspend
	net/mlx5: E-switch, Fix setting of reserved fields on MODIFY_SCHEDULING_ELEMENT
	net: mlx5: eliminate anonymous module_init & module_exit
	drm/panfrost: fix GENERIC_ATOMIC64 dependency
	dmaengine: Fix double increment of client_count in dma_chan_get()
	net: macb: fix PTP TX timestamp failure due to packet padding
	virtio-net: correctly enable callback during start_xmit
	l2tp: prevent lockdep issue in l2tp_tunnel_register()
	HID: betop: check shape of output reports
	cifs: fix potential deadlock in cache_refresh_path()
	dmaengine: xilinx_dma: call of_node_put() when breaking out of for_each_child_of_node()
	phy: phy-can-transceiver: Skip warning if no "max-bitrate"
	drm/amd/display: fix issues with driver unload
	nvme-pci: fix timeout request state check
	tcp: avoid the lookup process failing to get sk in ehash table
	octeontx2-pf: Fix the use of GFP_KERNEL in atomic context on rt
	ptdma: pt_core_execute_cmd() should use spinlock
	device property: fix of node refcount leak in fwnode_graph_get_next_endpoint()
	w1: fix deadloop in __w1_remove_master_device()
	w1: fix WARNING after calling w1_process()
	driver core: Fix test_async_probe_init saves device in wrong array
	selftests/net: toeplitz: fix race on tpacket_v3 block close
	net: dsa: microchip: ksz9477: port map correction in ALU table entry register
	thermal/core: Remove duplicate information when an error occurs
	thermal/core: Rename 'trips' to 'num_trips'
	thermal: Validate new state in cur_state_store()
	thermal/core: fix error code in __thermal_cooling_device_register()
	thermal: core: call put_device() only after device_register() fails
	net: stmmac: enable all safety features by default
	tcp: fix rate_app_limited to default to 1
	scsi: iscsi: Fix multiple iSCSI session unbind events sent to userspace
	cpufreq: Add Tegra234 to cpufreq-dt-platdev blocklist
	kcsan: test: don't put the expect array on the stack
	cpufreq: Add SM6375 to cpufreq-dt-platdev blocklist
	ASoC: fsl_micfil: Correct the number of steps on SX controls
	net: usb: cdc_ether: add support for Thales Cinterion PLS62-W modem
	drm: Add orientation quirk for Lenovo ideapad D330-10IGL
	s390/debug: add _ASM_S390_ prefix to header guard
	s390: expicitly align _edata and _end symbols on page boundary
	perf/x86/msr: Add Emerald Rapids
	perf/x86/intel/uncore: Add Emerald Rapids
	cpufreq: armada-37xx: stop using 0 as NULL pointer
	ASoC: fsl_ssi: Rename AC'97 streams to avoid collisions with AC'97 CODEC
	ASoC: fsl-asoc-card: Fix naming of AC'97 CODEC widgets
	spi: spidev: remove debug messages that access spidev->spi without locking
	KVM: s390: interrupt: use READ_ONCE() before cmpxchg()
	scsi: hisi_sas: Set a port invalid only if there are no devices attached when refreshing port id
	r8152: add vendor/device ID pair for Microsoft Devkit
	platform/x86: touchscreen_dmi: Add info for the CSL Panther Tab HD
	platform/x86: asus-nb-wmi: Add alternate mapping for KEY_SCREENLOCK
	lockref: stop doing cpu_relax in the cmpxchg loop
	firmware: coreboot: Check size of table entry and use flex-array
	drm/i915: Allow switching away via vga-switcheroo if uninitialized
	Revert "selftests/bpf: check null propagation only neither reg is PTR_TO_BTF_ID"
	drm/i915: Remove unused variable
	x86: ACPI: cstate: Optimize C3 entry on AMD CPUs
	fs: reiserfs: remove useless new_opts in reiserfs_remount
	sysctl: add a new register_sysctl_init() interface
	kernel/panic: move panic sysctls to its own file
	panic: unset panic_on_warn inside panic()
	ubsan: no need to unset panic_on_warn in ubsan_epilogue()
	kasan: no need to unset panic_on_warn in end_report()
	exit: Add and use make_task_dead.
	objtool: Add a missing comma to avoid string concatenation
	hexagon: Fix function name in die()
	h8300: Fix build errors from do_exit() to make_task_dead() transition
	csky: Fix function name in csky_alignment() and die()
	ia64: make IA64_MCA_RECOVERY bool instead of tristate
	panic: Separate sysctl logic from CONFIG_SMP
	exit: Put an upper limit on how often we can oops
	exit: Expose "oops_count" to sysfs
	exit: Allow oops_limit to be disabled
	panic: Consolidate open-coded panic_on_warn checks
	panic: Introduce warn_limit
	panic: Expose "warn_count" to sysfs
	docs: Fix path paste-o for /sys/kernel/warn_count
	exit: Use READ_ONCE() for all oops/warn limit reads
	Bluetooth: hci_sync: cancel cmd_timer if hci_open failed
	drm/amdgpu: complete gfxoff allow signal during suspend without delay
	scsi: hpsa: Fix allocation size for scsi_host_alloc()
	KVM: SVM: fix tsc scaling cache logic
	module: Don't wait for GOING modules
	tracing: Make sure trace_printk() can output as soon as it can be used
	trace_events_hist: add check for return value of 'create_hist_field'
	ftrace/scripts: Update the instructions for ftrace-bisect.sh
	cifs: Fix oops due to uncleared server->smbd_conn in reconnect
	i2c: mv64xxx: Remove shutdown method from driver
	i2c: mv64xxx: Add atomic_xfer method to driver
	ksmbd: add smbd max io size parameter
	ksmbd: add max connections parameter
	ksmbd: do not sign response to session request for guest login
	ksmbd: downgrade ndr version error message to debug
	ksmbd: limit pdu length size according to connection status
	ovl: fail on invalid uid/gid mapping at copy up
	KVM: x86/vmx: Do not skip segment attributes if unusable bit is set
	KVM: arm64: GICv4.1: Fix race with doorbell on VPE activation/deactivation
	thermal: intel: int340x: Protect trip temperature from concurrent updates
	ipv6: fix reachability confirmation with proxy_ndp
	ARM: 9280/1: mm: fix warning on phys_addr_t to void pointer assignment
	EDAC/device: Respect any driver-supplied workqueue polling value
	EDAC/qcom: Do not pass llcc_driv_data as edac_device_ctl_info's pvt_info
	net: mana: Fix IRQ name - add PCI and queue number
	scsi: ufs: core: Fix devfreq deadlocks
	i2c: designware: use casting of u64 in clock multiplication to avoid overflow
	netlink: prevent potential spectre v1 gadgets
	net: fix UaF in netns ops registration error path
	drm/i915/selftest: fix intel_selftest_modify_policy argument types
	netfilter: nft_set_rbtree: Switch to node list walk for overlap detection
	netfilter: nft_set_rbtree: skip elements in transaction from garbage collection
	netlink: annotate data races around nlk->portid
	netlink: annotate data races around dst_portid and dst_group
	netlink: annotate data races around sk_state
	ipv4: prevent potential spectre v1 gadget in ip_metrics_convert()
	ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
	netfilter: conntrack: fix vtag checks for ABORT/SHUTDOWN_COMPLETE
	netrom: Fix use-after-free of a listening socket.
	net/sched: sch_taprio: do not schedule in taprio_reset()
	sctp: fail if no bound addresses can be used for a given scope
	riscv/kprobe: Fix instruction simulation of JALR
	nvme: fix passthrough csi check
	gpio: mxc: Unlock on error path in mxc_flip_edge()
	ravb: Rename "no_ptp_cfg_active" and "ptp_cfg_active" variables
	net: ravb: Fix lack of register setting after system resumed for Gen3
	net: ravb: Fix possible hang if RIS2_QFF1 happen
	net: mctp: mark socks as dead on unhash, prevent re-add
	thermal: intel: int340x: Add locking to int340x_thermal_get_trip_type()
	net/tg3: resolve deadlock in tg3_reset_task() during EEH
	net: mdio-mux-meson-g12a: force internal PHY off on mux switch
	treewide: fix up files incorrectly marked executable
	tools: gpio: fix -c option of gpio-event-mon
	Revert "Input: synaptics - switch touchpad on HP Laptop 15-da3001TU to RMI mode"
	cpufreq: Move to_gov_attr_set() to cpufreq.h
	cpufreq: governor: Use kobject release() method to free dbs_data
	kbuild: Allow kernel installation packaging to override pkg-config
	block: fix and cleanup bio_check_ro
	x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
	netfilter: conntrack: unify established states for SCTP paths
	perf/x86/amd: fix potential integer overflow on shift of a int
	Linux 5.15.91

Change-Id: I3349d802533097ac86e5c680fbd40c00c9719ec7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-02-01 09:38:19 +00:00
Kees Cook
0691ddae56 panic: Introduce warn_limit
commit 9fc9e278a5c0b708eeffaf47d6eb0c82aa74ed78 upstream.

Like oops_limit, add warn_limit for limiting the number of warnings when
panic_on_warn is not set.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: tangmeng <tangmeng@uniontech.com>
Cc: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-doc@vger.kernel.org
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221117234328.594699-5-keescook@chromium.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-01 08:27:22 +01:00
Kees Cook
fc636b1362 exit: Allow oops_limit to be disabled
commit de92f65719cd672f4b48397540b9f9eff67eca40 upstream.

In preparation for keeping oops_limit logic in sync with warn_limit,
have oops_limit == 0 disable checking the Oops counter.

Cc: Jann Horn <jannh@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-01 08:27:21 +01:00
Jann Horn
f80fb0001f exit: Put an upper limit on how often we can oops
commit d4ccd54d28d3c8598e2354acc13e28c060961dbb upstream.

Many Linux systems are configured to not panic on oops; but allowing an
attacker to oops the system **really** often can make even bugs that look
completely unexploitable exploitable (like NULL dereferences and such) if
each crash elevates a refcount by one or a lock is taken in read mode, and
this causes a counter to eventually overflow.

The most interesting counters for this are 32 bits wide (like open-coded
refcounts that don't use refcount_t). (The ldsem reader count on 32-bit
platforms is just 16 bits, but probably nobody cares about 32-bit platforms
that much nowadays.)

So let's panic the system if the kernel is constantly oopsing.

The speed of oopsing 2^32 times probably depends on several factors, like
how long the stack trace is and which unwinder you're using; an empirically
important one is whether your console is showing a graphical environment or
a text console that oopses will be printed to.
In a quick single-threaded benchmark, it looks like oopsing in a vfork()
child with a very short stack trace only takes ~510 microseconds per run
when a graphical console is active; but switching to a text console that
oopses are printed to slows it down around 87x, to ~45 milliseconds per
run.
(Adding more threads makes this faster, but the actual oops printing
happens under &die_lock on x86, so you can maybe speed this up by a factor
of around 2 and then any further improvement gets eaten up by lock
contention.)

It looks like it would take around 8-12 days to overflow a 32-bit counter
with repeated oopsing on a multi-core X86 system running a graphical
environment; both me (in an X86 VM) and Seth (with a distro kernel on
normal hardware in a standard configuration) got numbers in that ballpark.

12 days aren't *that* short on a desktop system, and you'd likely need much
longer on a typical server system (assuming that people don't run graphical
desktop environments on their servers), and this is a *very* noisy and
violent approach to exploiting the kernel; and it also seems to take orders
of magnitude longer on some machines, probably because stuff like EFI
pstore will slow it down a ton if that's active.

Signed-off-by: Jann Horn <jannh@google.com>
Link: https://lore.kernel.org/r/20221107201317.324457-1-jannh@google.com
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221117234328.594699-2-keescook@chromium.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-02-01 08:27:21 +01:00
Yu Zhao
642d9866d6 UPSTREAM: mm: multi-gen LRU: admin guide
Add an admin guide.

Link: https://lkml.kernel.org/r/20220918080010.2920238-14-yuzhao@google.com
Change-Id: Ia4dba47e8231eda4f0e76fb8969df7291a9bfe7c
Signed-off-by: Yu Zhao <yuzhao@google.com>
Acked-by: Brian Geffon <bgeffon@google.com>
Acked-by: Jan Alexander Steffens (heftig) <heftig@archlinux.org>
Acked-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Acked-by: Steven Barrett <steven@liquorix.net>
Acked-by: Suleiman Souhlal <suleiman@google.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Tested-by: Daniel Byrne <djbyrne@mtu.edu>
Tested-by: Donald Carr <d@chaos-reins.com>
Tested-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Tested-by: Konstantin Kharlamov <Hi-Angel@yandex.ru>
Tested-by: Shuang Zhai <szhai2@cs.rochester.edu>
Tested-by: Sofia Trinh <sofia.trinh@edi.works>
Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michael Larabel <Michael@MichaelLarabel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit 07017acb06012d250fb68930e809257e6694d324)
Bug: 249601646
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
2022-11-30 00:28:11 +00:00
Kalesh Singh
543542a21e Revert "FROMLIST: mm: multi-gen LRU: admin guide"
This reverts commit 6e815a6f34.

To be replaced with upstream version.

Bug: 249601646
Change-Id: Ib1036315a5ec79a240304a865c9a33a8f79d0b3c
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
2022-11-30 00:28:11 +00:00
Yosry Ahmed
4445b043d4 BACKPORT: mm: add NR_SECONDARY_PAGETABLE to count secondary page table uses.
We keep track of several kernel memory stats (total kernel memory, page
tables, stack, vmalloc, etc) on multiple levels (global, per-node,
per-memcg, etc). These stats give insights to users to how much memory
is used by the kernel and for what purposes.

Currently, memory used by KVM mmu is not accounted in any of those
kernel memory stats. This patch series accounts the memory pages
used by KVM for page tables in those stats in a new
NR_SECONDARY_PAGETABLE stat. This stat can be later extended to account
for other types of secondary pages tables (e.g. iommu page tables).

KVM has a decent number of large allocations that aren't for page
tables, but for most of them, the number/size of those allocations
scales linearly with either the number of vCPUs or the amount of memory
assigned to the VM. KVM's secondary page table allocations do not scale
linearly, especially when nested virtualization is in use.

From a KVM perspective, NR_SECONDARY_PAGETABLE will scale with KVM's
per-VM pages_{4k,2m,1g} stats unless the guest is doing something
bizarre (e.g. accessing only 4kb chunks of 2mb pages so that KVM is
forced to allocate a large number of page tables even though the guest
isn't accessing that much memory). However, someone would need to either
understand how KVM works to make that connection, or know (or be told) to
go look at KVM's stats if they're running VMs to better decipher the stats.

Furthermore, having NR_PAGETABLE side-by-side with NR_SECONDARY_PAGETABLE
is informative. For example, when backing a VM with THP vs. HugeTLB,
NR_SECONDARY_PAGETABLE is roughly the same, but NR_PAGETABLE is an order
of magnitude higher with THP. So having this stat will at the very least
prove to be useful for understanding tradeoffs between VM backing types,
and likely even steer folks towards potential optimizations.

The original discussion with more details about the rationale:
https://lore.kernel.org/all/87ilqoi77b.wl-maz@kernel.org

This stat will be used by subsequent patches to count KVM mmu
memory usage.

Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220823004639.2387269-2-yosryahmed@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Bug: 222044477
(cherry picked from commit ebc97a52b5d6cd5fb0c15a3fc9cdd6eb924646a1)
[vdonnefort@: Fix trivial documentation conflict]
Change-Id: I16976e21d2e68ebbcd49e9f1275055e81ec82881
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
2022-11-23 17:11:25 +00:00
Will Deacon
39d08ecff2 ANDROID: Documentation: KVM: Add some documentation for Protected KVM on arm64
Add some initial documentation for the Protected KVM (pKVM) feature on
arm64, describing the user ABI for creating protected VMs as well as
their limitations.

Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Change-Id: I152af404f24b9aba3cc9be6acd8e26afcfa4b0a5
2022-10-21 10:26:21 +01:00
Greg Kroah-Hartman
d32ea5d2c0 Merge 5.15.64 into android14-5.15
Changes in 5.15.64
	wifi: rtlwifi: remove always-true condition pointed out by GCC 12
	eth: sun: cassini: remove dead code
	audit: fix potential double free on error path from fsnotify_add_inode_mark
	cgroup: Fix race condition at rebind_subsystems()
	parisc: Make CONFIG_64BIT available for ARCH=parisc64 only
	parisc: Fix exception handler for fldw and fstw instructions
	kernel/sys_ni: add compat entry for fadvise64_64
	x86/entry: Move CLD to the start of the idtentry macro
	block: add a bdev_max_zone_append_sectors helper
	block: add bdev_max_segments() helper
	btrfs: zoned: revive max_zone_append_bytes
	btrfs: replace BTRFS_MAX_EXTENT_SIZE with fs_info->max_extent_size
	btrfs: convert count_max_extents() to use fs_info->max_extent_size
	Input: i8042 - move __initconst to fix code styling warning
	Input: i8042 - merge quirk tables
	Input: i8042 - add TUXEDO devices to i8042 quirk tables
	Input: i8042 - add additional TUXEDO devices to i8042 quirk tables
	drivers/base: fix userspace break from using bin_attributes for cpumap and cpulist
	scsi: qla2xxx: Fix response queue handler reading stale packets
	scsi: qla2xxx: edif: Fix dropped IKE message
	btrfs: put initial index value of a directory in a constant
	btrfs: pass the dentry to btrfs_log_new_name() instead of the inode
	btrfs: remove unnecessary parameter delalloc_start for writepage_delalloc()
	riscv: lib: uaccess: fold fixups into body
	riscv: lib: uaccess: fix CSR_STATUS SR_SUM bit
	xfrm: fix refcount leak in __xfrm_policy_check()
	xfrm: clone missing x->lastused in xfrm_do_migrate
	af_key: Do not call xfrm_probe_algs in parallel
	xfrm: policy: fix metadata dst->dev xmit null pointer dereference
	fs: require CAP_SYS_ADMIN in target namespace for idmapped mounts
	net: use eth_hw_addr_set() instead of ether_addr_copy()
	Revert "net: macsec: update SCI upon MAC address change."
	NFS: Don't allocate nfs_fattr on the stack in __nfs42_ssc_open()
	NFSv4.2 fix problems with __nfs42_ssc_open
	SUNRPC: RPC level errors should set task->tk_rpc_status
	mm/smaps: don't access young/dirty bit if pte unpresent
	ntfs: fix acl handling
	rose: check NULL rose_loopback_neigh->loopback
	r8152: fix the units of some registers for RTL8156A
	r8152: fix the RX FIFO settings when suspending
	nfc: pn533: Fix use-after-free bugs caused by pn532_cmd_timeout
	ice: xsk: Force rings to be sized to power of 2
	ice: xsk: prohibit usage of non-balanced queue id
	net/mlx5e: Properly disable vlan strip on non-UL reps
	net/mlx5: Avoid false positive lockdep warning by adding lock_class_key
	net/mlx5e: Fix wrong application of the LRO state
	net/mlx5e: Fix wrong tc flag used when set hw-tc-offload off
	net: ipa: don't assume SMEM is page-aligned
	net: phy: Don't WARN for PHY_READY state in mdio_bus_phy_resume()
	net: moxa: get rid of asymmetry in DMA mapping/unmapping
	bonding: 802.3ad: fix no transmission of LACPDUs
	net: ipvtap - add __init/__exit annotations to module init/exit funcs
	netfilter: ebtables: reject blobs that don't provide all entry points
	bnxt_en: fix NQ resource accounting during vf creation on 57500 chips
	netfilter: nf_tables: disallow updates of implicit chain
	netfilter: nf_tables: make table handle allocation per-netns friendly
	netfilter: nft_payload: report ERANGE for too long offset and length
	netfilter: nft_payload: do not truncate csum_offset and csum_type
	netfilter: nf_tables: do not leave chain stats enabled on error
	netfilter: nft_osf: restrict osf to ipv4, ipv6 and inet families
	netfilter: nft_tunnel: restrict it to netdev family
	netfilter: nf_tables: consolidate rule verdict trace call
	netfilter: nft_cmp: optimize comparison for 16-bytes
	netfilter: bitwise: improve error goto labels
	netfilter: nf_tables: upfront validation of data via nft_data_init()
	netfilter: nf_tables: disallow jump to implicit chain from set element
	netfilter: nf_tables: disallow binding to already bound chain
	netfilter: flowtable: add function to invoke garbage collection immediately
	netfilter: flowtable: fix stuck flows on cleanup due to pending work
	net: Fix data-races around sysctl_[rw]mem_(max|default).
	net: Fix data-races around weight_p and dev_weight_[rt]x_bias.
	net: Fix data-races around netdev_max_backlog.
	net: Fix data-races around netdev_tstamp_prequeue.
	ratelimit: Fix data-races in ___ratelimit().
	net: Fix data-races around sysctl_optmem_max.
	net: Fix a data-race around sysctl_tstamp_allow_data.
	net: Fix a data-race around sysctl_net_busy_poll.
	net: Fix a data-race around sysctl_net_busy_read.
	net: Fix a data-race around netdev_budget.
	tcp: expose the tcp_mark_push() and tcp_skb_entail() helpers
	mptcp: stop relying on tcp_tx_skb_cache
	net: Fix data-races around sysctl_max_skb_frags.
	net: Fix a data-race around netdev_budget_usecs.
	net: Fix data-races around sysctl_fb_tunnels_only_for_init_net.
	net: Fix data-races around sysctl_devconf_inherit_init_net.
	net: Fix a data-race around sysctl_somaxconn.
	ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter
	i40e: Fix incorrect address type for IPv6 flow rules
	rxrpc: Fix locking in rxrpc's sendmsg
	ionic: widen queue_lock use around lif init and deinit
	ionic: clear broken state on generation change
	ionic: fix up issues with handling EAGAIN on FW cmds
	ionic: VF initial random MAC address if no assigned mac
	net: stmmac: work around sporadic tx issue on link-up
	btrfs: fix silent failure when deleting root reference
	btrfs: replace: drop assert for suspended replace
	btrfs: add info when mount fails due to stale replace target
	btrfs: check if root is readonly while setting security xattr
	btrfs: fix possible memory leak in btrfs_get_dev_args_from_path()
	perf/x86/lbr: Enable the branch type for the Arch LBR by default
	x86/unwind/orc: Unwind ftrace trampolines with correct ORC entry
	x86/bugs: Add "unknown" reporting for MMIO Stale Data
	x86/nospec: Unwreck the RSB stuffing
	loop: Check for overflow while configuring loop
	writeback: avoid use-after-free after removing device
	asm-generic: sections: refactor memory_intersects
	mm/damon/dbgfs: avoid duplicate context directory creation
	s390/mm: do not trigger write fault when vma does not allow VM_WRITE
	bootmem: remove the vmemmap pages from kmemleak in put_page_bootmem
	s390: fix double free of GS and RI CBs on fork() failure
	fbdev: fbcon: Properly revert changes when vc_resize() failed
	Revert "memcg: cleanup racy sum avoidance code"
	ACPI: processor: Remove freq Qos request for all CPUs
	nouveau: explicitly wait on the fence in nouveau_bo_move_m2mf
	smb3: missing inode locks in punch hole
	xen/privcmd: fix error exit of privcmd_ioctl_dm_op()
	riscv: traps: add missing prototype
	io_uring: fix issue with io_write() not always undoing sb_start_write()
	Revert "usbnet: smsc95xx: Fix deadlock on runtime resume"
	Revert "usbnet: smsc95xx: Forward PHY interrupts to PHY driver to avoid polling"
	mm/hugetlb: fix hugetlb not supporting softdirty tracking
	Revert "md-raid: destroy the bitmap after destroying the thread"
	md: call __md_stop_writes in md_stop
	mptcp: Fix crash due to tcp_tsorted_anchor was initialized before release skb
	arm64: Fix match_list for erratum 1286807 on Arm Cortex-A76
	binder_alloc: add missing mmap_lock calls when using the VMA
	x86/nospec: Fix i386 RSB stuffing
	Documentation/ABI: Mention retbleed vulnerability info file for sysfs
	blk-mq: fix io hung due to missing commit_rqs
	perf python: Fix build when PYTHON_CONFIG is user supplied
	perf/x86/intel/uncore: Fix broken read_counter() for SNB IMC PMU
	perf/x86/intel/ds: Fix precise store latency handling
	perf stat: Clear evsel->reset_group for each stat run
	scsi: ufs: core: Enable link lost interrupt
	scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq
	bpf: Don't use tnum_range on array range checking for poke descriptors
	Linux 5.15.64

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8e4d8a8ed90e22487e249b9635b210935febda6e
2022-09-24 10:01:28 +02:00
Greg Kroah-Hartman
47c7e57022 Merge 5.15.61 into android14-5.15
Changes in 5.15.61
        Makefile: link with -z noexecstack --no-warn-rwx-segments
        x86: link vdso and boot with -z noexecstack --no-warn-rwx-segments
        Revert "pNFS: nfs3_set_ds_client should set NFS_CS_NOPING"
        scsi: Revert "scsi: qla2xxx: Fix disk failure to rediscover"
        pNFS/flexfiles: Report RDMA connection errors to the server
        NFSD: Clean up the show_nf_flags() macro
        nfsd: eliminate the NFSD_FILE_BREAK_* flags
        ALSA: usb-audio: Add quirk for Behringer UMC202HD
        ALSA: bcd2000: Fix a UAF bug on the error path of probing
        ALSA: hda/realtek: Add quirk for Clevo NV45PZ
        ALSA: hda/realtek: Add quirk for HP Spectre x360 15-eb0xxx
        wifi: mac80211_hwsim: fix race condition in pending packet
        wifi: mac80211_hwsim: add back erroneously removed cast
        wifi: mac80211_hwsim: use 32-bit skb cookie
        add barriers to buffer_uptodate and set_buffer_uptodate
        lockd: detect and reject lock arguments that overflow
        HID: hid-input: add Surface Go battery quirk
        HID: wacom: Only report rotation for art pen
        HID: wacom: Don't register pad_input for touch switch
        KVM: nVMX: Snapshot pre-VM-Enter BNDCFGS for !nested_run_pending case
        KVM: nVMX: Snapshot pre-VM-Enter DEBUGCTL for !nested_run_pending case
        KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0
        KVM: s390: pv: don't present the ecall interrupt twice
        KVM: x86: Split kvm_is_valid_cr4() and export only the non-vendor bits
        KVM: nVMX: Let userspace set nVMX MSR to any _host_ supported value
        KVM: nVMX: Account for KVM reserved CR4 bits in consistency checks
        KVM: nVMX: Inject #UD if VMXON is attempted with incompatible CR0/CR4
        KVM: x86: Mark TSS busy during LTR emulation _after_ all fault checks
        KVM: x86: Set error code to segment selector on LLDT/LTR non-canonical #GP
        KVM: nVMX: Always enable TSC scaling for L2 when it was enabled for L1
        KVM: x86: Tag kvm_mmu_x86_module_init() with __init
        KVM: x86: do not report preemption if the steal time cache is stale
        KVM: x86: revalidate steal time cache if MSR value changes
        riscv: set default pm_power_off to NULL
        ALSA: hda/conexant: Add quirk for LENOVO 20149 Notebook model
        ALSA: hda/cirrus - support for iMac 12,1 model
        ALSA: hda/realtek: Add quirk for another Asus K42JZ model
        ALSA: hda/realtek: Add a quirk for HP OMEN 15 (8786) mute LED
        tty: vt: initialize unicode screen buffer
        vfs: Check the truncate maximum size in inode_newsize_ok()
        fs: Add missing umask strip in vfs_tmpfile
        thermal: sysfs: Fix cooling_device_stats_setup() error code path
        fbcon: Fix boundary checks for fbcon=vc:n1-n2 parameters
        fbcon: Fix accelerated fbdev scrolling while logo is still shown
        usbnet: Fix linkwatch use-after-free on disconnect
        fix short copy handling in copy_mc_pipe_to_iter()
        crypto: ccp - Use kzalloc for sev ioctl interfaces to prevent kernel memory leak
        ovl: drop WARN_ON() dentry is NULL in ovl_encode_fh()
        parisc: Fix device names in /proc/iomem
        parisc: Drop pa_swapper_pg_lock spinlock
        parisc: Check the return value of ioremap() in lba_driver_probe()
        parisc: io_pgetevents_time64() needs compat syscall in 32-bit compat mode
        riscv:uprobe fix SR_SPIE set/clear handling
        dt-bindings: riscv: fix SiFive l2-cache's cache-sets
        RISC-V: kexec: Fixup use of smp_processor_id() in preemptible context
        RISC-V: Fixup get incorrect user mode PC for kernel mode regs
        RISC-V: Fixup schedule out issue in machine_crash_shutdown()
        RISC-V: Add modules to virtual kernel memory layout dump
        rtc: rx8025: fix 12/24 hour mode detection on RX-8035
        drm/gem: Properly annotate WW context on drm_gem_lock_reservations() error
        drm/shmem-helper: Add missing vunmap on error
        drm/vc4: hdmi: Disable audio if dmas property is present but empty
        drm/hyperv-drm: Include framebuffer and EDID headers
        drm/nouveau: fix another off-by-one in nvbios_addr
        drm/nouveau: Don't pm_runtime_put_sync(), only pm_runtime_put_autosuspend()
        drm/nouveau/acpi: Don't print error when we get -EINPROGRESS from pm_runtime
        drm/nouveau/kms: Fix failure path for creating DP connectors
        drm/amdgpu: Check BO's requested pinning domains against its preferred_domains
        drm/amdgpu: fix check in fbdev init
        bpf: Fix KASAN use-after-free Read in compute_effective_progs
        btrfs: reject log replay if there is unsupported RO compat flag
        mtd: rawnand: arasan: Fix clock rate in NV-DDR
        mtd: rawnand: arasan: Update NAND bus clock instead of system clock
        um: Remove straying parenthesis
        um: seed rng using host OS rng
        iio: fix iio_format_avail_range() printing for none IIO_VAL_INT
        iio: light: isl29028: Fix the warning in isl29028_remove()
        scsi: sg: Allow waiting for commands to complete on removed device
        scsi: qla2xxx: Fix incorrect display of max frame size
        scsi: qla2xxx: Zero undefined mailbox IN registers
        soundwire: qcom: Check device status before reading devid
        ksmbd: fix memory leak in smb2_handle_negotiate
        ksmbd: prevent out of bound read for SMB2_TREE_CONNNECT
        ksmbd: fix use-after-free bug in smb2_tree_disconect
        fuse: limit nsec
        fuse: ioctl: translate ENOSYS
        serial: mvebu-uart: uart2 error bits clearing
        md-raid: destroy the bitmap after destroying the thread
        md-raid10: fix KASAN warning
        mbcache: don't reclaim used entries
        mbcache: add functions to delete entry if unused
        media: [PATCH] pci: atomisp_cmd: fix three missing checks on list iterator
        ia64, processor: fix -Wincompatible-pointer-types in ia64_get_irr()
        PCI: Add defines for normal and subtractive PCI bridges
        powerpc/fsl-pci: Fix Class Code of PCIe Root Port
        powerpc/ptdump: Fix display of RW pages on FSL_BOOK3E
        powerpc/powernv: Avoid crashing if rng is NULL
        MIPS: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
        coresight: Clear the connection field properly
        usb: typec: ucsi: Acknowledge the GET_ERROR_STATUS command completion
        USB: HCD: Fix URB giveback issue in tasklet function
        ARM: dts: uniphier: Fix USB interrupts for PXs2 SoC
        arm64: dts: uniphier: Fix USB interrupts for PXs3 SoC
        usb: dwc3: gadget: refactor dwc3_repare_one_trb
        usb: dwc3: gadget: fix high speed multiplier setting
        netfilter: nf_tables: do not allow SET_ID to refer to another table
        netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
        netfilter: nf_tables: do not allow RULE_ID to refer to another chain
        netfilter: nf_tables: fix null deref due to zeroed list head
        epoll: autoremove wakers even more aggressively
        x86: Handle idle=nomwait cmdline properly for x86_idle
        arch: make TRACE_IRQFLAGS_NMI_SUPPORT generic
        arm64: Do not forget syscall when starting a new thread.
        arm64: fix oops in concurrently setting insn_emulation sysctls
        arm64: kasan: Revert "arm64: mte: reset the page tag in page->flags"
        ext2: Add more validity checks for inode counts
        sched/fair: Introduce SIS_UTIL to search idle CPU based on sum of util_avg
        genirq: Don't return error on missing optional irq_request_resources()
        irqchip/mips-gic: Only register IPI domain when SMP is enabled
        genirq: GENERIC_IRQ_IPI depends on SMP
        sched/core: Always flush pending blk_plug
        irqchip/mips-gic: Check the return value of ioremap() in gic_of_init()
        wait: Fix __wait_event_hrtimeout for RT/DL tasks
        ARM: dts: imx6ul: add missing properties for sram
        ARM: dts: imx6ul: change operating-points to uint32-matrix
        ARM: dts: imx6ul: fix keypad compatible
        ARM: dts: imx6ul: fix csi node compatible
        ARM: dts: imx6ul: fix lcdif node compatible
        ARM: dts: imx6ul: fix qspi node compatible
        ARM: dts: BCM5301X: Add DT for Meraki MR26
        ARM: dts: ux500: Fix Codina accelerometer mounting matrix
        ARM: dts: ux500: Fix Gavini accelerometer mounting matrix
        spi: synquacer: Add missing clk_disable_unprepare()
        ARM: OMAP2+: display: Fix refcount leak bug
        ARM: OMAP2+: pdata-quirks: Fix refcount leak bug
        ACPI: EC: Remove duplicate ThinkPad X1 Carbon 6th entry from DMI quirks
        ACPI: EC: Drop the EC_FLAGS_IGNORE_DSDT_GPE quirk
        ACPI: PM: save NVS memory for Lenovo G40-45
        ACPI: LPSS: Fix missing check in register_device_clock()
        ARM: dts: qcom: sdx55: Fix the IRQ trigger type for UART
        arm64: dts: qcom: ipq8074: fix NAND node name
        arm64: dts: allwinner: a64: orangepi-win: Fix LED node name
        ARM: shmobile: rcar-gen2: Increase refcount for new reference
        firmware: tegra: Fix error check return value of debugfs_create_file()
        hwmon: (dell-smm) Add Dell XPS 13 7390 to fan control whitelist
        hwmon: (sht15) Fix wrong assumptions in device remove callback
        PM: hibernate: defer device probing when resuming from hibernation
        selinux: fix memleak in security_read_state_kernel()
        selinux: Add boundary check in put_entry()
        kasan: test: Silence GCC 12 warnings
        drm/amdgpu: Remove one duplicated ef removal
        powerpc/64s: Disable stack variable initialisation for prom_init
        spi: spi-rspi: Fix PIO fallback on RZ platforms
        ARM: findbit: fix overflowing offset
        meson-mx-socinfo: Fix refcount leak in meson_mx_socinfo_init
        arm64: dts: renesas: beacon: Fix regulator node names
        spi: spi-altera-dfl: Fix an error handling path
        ARM: bcm: Fix refcount leak in bcm_kona_smc_init
        ACPI: processor/idle: Annotate more functions to live in cpuidle section
        ARM: dts: imx7d-colibri-emmc: add cpu1 supply
        soc: renesas: r8a779a0-sysc: Fix A2DP1 and A2CV[2357] PDR values
        scsi: hisi_sas: Use managed PCI functions
        dt-bindings: iio: accel: Add DT binding doc for ADXL355
        soc: amlogic: Fix refcount leak in meson-secure-pwrc.c
        arm64: dts: renesas: Fix thermal-sensors on single-zone sensors
        x86/pmem: Fix platform-device leak in error path
        ARM: dts: ast2500-evb: fix board compatible
        ARM: dts: ast2600-evb: fix board compatible
        ARM: dts: ast2600-evb-a1: fix board compatible
        arm64: dts: mt8192: Fix idle-states nodes naming scheme
        arm64: dts: mt8192: Fix idle-states entry-method
        arm64: select TRACE_IRQFLAGS_NMI_SUPPORT
        arm64: cpufeature: Allow different PMU versions in ID_DFR0_EL1
        locking/lockdep: Fix lockdep_init_map_*() confusion
        arm64: dts: qcom: sc7180: Remove ipa_fw_mem node on trogdor
        soc: fsl: guts: machine variable might be unset
        block: fix infinite loop for invalid zone append
        ARM: dts: qcom: mdm9615: add missing PMIC GPIO reg
        ARM: OMAP2+: Fix refcount leak in omapdss_init_of
        ARM: OMAP2+: Fix refcount leak in omap3xxx_prm_late_init
        arm64: dts: qcom: sdm630: disable GPU by default
        arm64: dts: qcom: sdm630: fix the qusb2phy ref clock
        arm64: dts: qcom: sdm630: fix gpu's interconnect path
        arm64: dts: qcom: sdm636-sony-xperia-ganges-mermaid: correct sdc2 pinconf
        cpufreq: zynq: Fix refcount leak in zynq_get_revision
        regulator: qcom_smd: Fix pm8916_pldo range
        ACPI: APEI: Fix _EINJ vs EFI_MEMORY_SP
        ARM: dts: qcom-msm8974: fix irq type on blsp2_uart1
        soc: qcom: ocmem: Fix refcount leak in of_get_ocmem
        soc: qcom: aoss: Fix refcount leak in qmp_cooling_devices_register
        ARM: dts: qcom: pm8841: add required thermal-sensor-cells
        bus: hisi_lpc: fix missing platform_device_put() in hisi_lpc_acpi_probe()
        stack: Declare {randomize_,}kstack_offset to fix Sparse warnings
        arm64: dts: qcom: msm8916: Fix typo in pronto remoteproc node
        ACPI: APEI: explicit init of HEST and GHES in apci_init()
        drivers/iio: Remove all strcpy() uses
        ACPI: VIOT: Fix ACS setup
        arm64: dts: qcom: sm6125: Move sdc2 pinctrl from seine-pdx201 to sm6125
        arm64: dts: qcom: sm6125: Append -state suffix to pinctrl nodes
        arm64: dts: qcom: sm8250: add missing PCIe PHY clock-cells
        arm64: dts: mt7622: fix BPI-R64 WPS button
        arm64: tegra: Fixup SYSRAM references
        arm64: tegra: Update Tegra234 BPMP channel addresses
        arm64: tegra: Mark BPMP channels as no-memory-wc
        arm64: tegra: Fix SDMMC1 CD on P2888
        erofs: avoid consecutive detection for Highmem memory
        blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created
        spi: Fix simplification of devm_spi_register_controller
        spi: tegra20-slink: fix UAF in tegra_slink_remove()
        hwmon: (drivetemp) Add module alias
        blktrace: Trace remapped requests correctly
        PM: domains: Ensure genpd_debugfs_dir exists before remove
        dm writecache: return void from functions
        dm writecache: count number of blocks read, not number of read bios
        dm writecache: count number of blocks written, not number of write bios
        dm writecache: count number of blocks discarded, not number of discard bios
        regulator: of: Fix refcount leak bug in of_get_regulation_constraints()
        soc: qcom: Make QCOM_RPMPD depend on PM
        arm64: dts: qcom: qcs404: Fix incorrect USB2 PHYs assignment
        irqdomain: Report irq number for NOMAP domains
        drivers/perf: arm_spe: Fix consistency of SYS_PMSCR_EL1.CX
        nohz/full, sched/rt: Fix missed tick-reenabling bug in dequeue_task_rt()
        x86/extable: Fix ex_handler_msr() print condition
        selftests/seccomp: Fix compile warning when CC=clang
        thermal/tools/tmon: Include pthread and time headers in tmon.h
        dm: return early from dm_pr_call() if DM device is suspended
        pwm: sifive: Simplify offset calculation for PWMCMP registers
        pwm: sifive: Ensure the clk is enabled exactly once per running PWM
        pwm: sifive: Shut down hardware only after pwmchip_remove() completed
        pwm: lpc18xx-sct: Reduce number of devm memory allocations
        pwm: lpc18xx-sct: Simplify driver by not using pwm_[gs]et_chip_data()
        pwm: lpc18xx: Fix period handling
        drm/dp: Export symbol / kerneldoc fixes for DP AUX bus
        drm/bridge: tc358767: Move (e)DP bridge endpoint parsing into dedicated function
        ath10k: do not enforce interrupt trigger type
        drm/st7735r: Fix module autoloading for Okaya RH128128T
        drm/panel: Fix build error when CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY_HELPER=m
        wifi: rtlwifi: fix error codes in rtl_debugfs_set_write_h2c()
        ath11k: fix netdev open race
        drm/mipi-dbi: align max_chunk to 2 in spi_transfer
        ath11k: Fix incorrect debug_mask mappings
        drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers()
        drm/mediatek: Modify dsi funcs to atomic operations
        drm/mediatek: Separate poweron/poweroff from enable/disable and define new funcs
        drm/mediatek: Add pull-down MIPI operation in mtk_dsi_poweroff function
        drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR
        drm/meson: encoder_hdmi: Fix refcount leak in meson_encoder_hdmi_init
        drm/bridge: lt9611uxc: Cancel only driver's work
        i2c: npcm: Remove own slave addresses 2:10
        i2c: npcm: Correct slave role behavior
        i2c: mxs: Silence a clang warning
        virtio-gpu: fix a missing check to avoid NULL dereference
        drm/shmem-helper: Unexport drm_gem_shmem_create_with_handle()
        drm/shmem-helper: Export dedicated wrappers for GEM object functions
        drm/shmem-helper: Pass GEM shmem object in public interfaces
        drm/virtio: Fix NULL vs IS_ERR checking in virtio_gpu_object_shmem_init
        drm: adv7511: override i2c address of cec before accessing it
        crypto: sun8i-ss - do not allocate memory when handling hash requests
        crypto: sun8i-ss - fix error codes in allocate_flows()
        net: fix sk_wmem_schedule() and sk_rmem_schedule() errors
        can: netlink: allow configuring of fixed bit rates without need for do_set_bittiming callback
        can: netlink: allow configuring of fixed data bit rates without need for do_set_data_bittiming callback
        i2c: Fix a potential use after free
        crypto: sun8i-ss - fix infinite loop in sun8i_ss_setup_ivs()
        media: atmel: atmel-sama7g5-isc: fix warning in configs without OF
        media: tw686x: Register the irq at the end of probe
        media: imx-jpeg: Correct some definition according specification
        media: imx-jpeg: Leave a blank space before the configuration data
        media: imx-jpeg: Add pm-runtime support for imx-jpeg
        media: imx-jpeg: use NV12M to represent non contiguous NV12
        media: imx-jpeg: Set V4L2_BUF_FLAG_LAST at eos
        media: imx-jpeg: Refactor function mxc_jpeg_parse
        media: imx-jpeg: Identify and handle precision correctly
        media: imx-jpeg: Handle source change in a function
        media: imx-jpeg: Support dynamic resolution change
        media: imx-jpeg: Align upwards buffer size
        media: imx-jpeg: Implement drain using v4l2-mem2mem helpers
        ath9k: fix use-after-free in ath9k_hif_usb_rx_cb
        wifi: iwlegacy: 4965: fix potential off-by-one overflow in il4965_rs_fill_link_cmd()
        drm/radeon: fix incorrrect SPDX-License-Identifiers
        rcutorture: Warn on individual rcu_torture_init() error conditions
        rcutorture: Don't cpuhp_remove_state() if cpuhp_setup_state() failed
        rcutorture: Fix ksoftirqd boosting timing and iteration
        test_bpf: fix incorrect netdev features
        crypto: ccp - During shutdown, check SEV data pointer before using
        drm: bridge: adv7511: Add check for mipi_dsi_driver_register
        media: imx-jpeg: Disable slot interrupt when frame done
        drm/mcde: Fix refcount leak in mcde_dsi_bind
        media: hdpvr: fix error value returns in hdpvr_read
        media: v4l2-mem2mem: prevent pollerr when last_buffer_dequeued is set
        media: driver/nxp/imx-jpeg: fix a unexpected return value problem
        media: tw686x: Fix memory leak in tw686x_video_init
        drm/vc4: plane: Remove subpixel positioning check
        drm/vc4: plane: Fix margin calculations for the right/bottom edges
        drm/bridge: Add a function to abstract away panels
        drm/vc4: dsi: Switch to devm_drm_of_get_bridge
        drm/vc4: Use of_device_get_match_data()
        drm/vc4: dsi: Release workaround buffer and DMA
        drm/vc4: dsi: Correct DSI divider calculations
        drm/vc4: dsi: Correct pixel order for DSI0
        drm/vc4: dsi: Register dsi0 as the correct vc4 encoder type
        drm/vc4: dsi: Fix dsi0 interrupt support
        drm/vc4: dsi: Add correct stop condition to vc4_dsi_encoder_disable iteration
        drm/vc4: hdmi: Fix HPD GPIO detection
        drm/vc4: hdmi: Avoid full hdmi audio fifo writes
        drm/vc4: hdmi: Reset HDMI MISC_CONTROL register
        drm/vc4: hdmi: Fix timings for interlaced modes
        drm/vc4: hdmi: Correct HDMI timing registers for interlaced modes
        crypto: arm64/gcm - Select AEAD for GHASH_ARM64_CE
        selftests/xsk: Destroy BPF resources only when ctx refcount drops to 0
        drm/rockchip: vop: Don't crash for invalid duplicate_state()
        drm/rockchip: Fix an error handling path rockchip_dp_probe()
        drm/mediatek: dpi: Remove output format of YUV
        drm/mediatek: dpi: Only enable dpi after the bridge is enabled
        drm: bridge: sii8620: fix possible off-by-one
        hinic: Use the bitmap API when applicable
        net: hinic: fix bug that ethtool get wrong stats
        net: hinic: avoid kernel hung in hinic_get_stats64()
        drm/msm/mdp5: Fix global state lock backoff
        crypto: hisilicon/sec - don't sleep when in softirq
        crypto: hisilicon - Kunpeng916 crypto driver don't sleep when in softirq
        media: platform: mtk-mdp: Fix mdp_ipi_comm structure alignment
        drm/msm: Avoid dirtyfb stalls on video mode displays (v2)
        drm/msm/dpu: Fix for non-visible planes
        mt76: mt76x02u: fix possible memory leak in __mt76x02u_mcu_send_msg
        mt76: mt7615: do not update pm stats in case of error
        ieee80211: add EHT 1K aggregation definitions
        mt76: mt7921: fix aggregation subframes setting to HE max
        mt76: mt7921: enlarge maximum VHT MPDU length to 11454
        mediatek: mt76: mac80211: Fix missing of_node_put() in mt76_led_init()
        mediatek: mt76: eeprom: fix missing of_node_put() in mt76_find_power_limits_node()
        skmsg: Fix invalid last sg check in sk_msg_recvmsg()
        drm/exynos/exynos7_drm_decon: free resources when clk_set_parent() failed.
        tcp: make retransmitted SKB fit into the send window
        libbpf: Fix the name of a reused map
        selftests: timers: valid-adjtimex: build fix for newer toolchains
        selftests: timers: clocksource-switch: fix passing errors from child
        bpf: Fix subprog names in stack traces.
        fs: check FMODE_LSEEK to control internal pipe splicing
        media: cedrus: h265: Fix flag name
        media: hantro: postproc: Fix motion vector space size
        media: hantro: Simplify postprocessor
        media: hevc: Embedded indexes in RPS
        media: staging: media: hantro: Fix typos
        wifi: wil6210: debugfs: fix info leak in wil_write_file_wmi()
        wifi: p54: Fix an error handling path in p54spi_probe()
        wifi: p54: add missing parentheses in p54_flush()
        selftests/bpf: fix a test for snprintf() overflow
        libbpf: fix an snprintf() overflow check
        can: pch_can: do not report txerr and rxerr during bus-off
        can: rcar_can: do not report txerr and rxerr during bus-off
        can: sja1000: do not report txerr and rxerr during bus-off
        can: hi311x: do not report txerr and rxerr during bus-off
        can: sun4i_can: do not report txerr and rxerr during bus-off
        can: kvaser_usb_hydra: do not report txerr and rxerr during bus-off
        can: kvaser_usb_leaf: do not report txerr and rxerr during bus-off
        can: usb_8dev: do not report txerr and rxerr during bus-off
        can: error: specify the values of data[5..7] of CAN error frames
        can: pch_can: pch_can_error(): initialize errc before using it
        Bluetooth: hci_intel: Add check for platform_driver_register
        i2c: cadence: Support PEC for SMBus block read
        i2c: mux-gpmux: Add of_node_put() when breaking out of loop
        wifi: wil6210: debugfs: fix uninitialized variable use in `wil_write_file_wmi()`
        wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue
        wifi: libertas: Fix possible refcount leak in if_usb_probe()
        media: cedrus: hevc: Add check for invalid timestamp
        net/mlx5e: Remove WARN_ON when trying to offload an unsupported TLS cipher/version
        net/mlx5e: Fix the value of MLX5E_MAX_RQ_NUM_MTTS
        net/mlx5: Adjust log_max_qp to be 18 at most
        crypto: hisilicon/hpre - don't use GFP_KERNEL to alloc mem during softirq
        crypto: inside-secure - Add missing MODULE_DEVICE_TABLE for of
        crypto: hisilicon/sec - fix auth key size error
        inet: add READ_ONCE(sk->sk_bound_dev_if) in INET_MATCH()
        ipv6: add READ_ONCE(sk->sk_bound_dev_if) in INET6_MATCH()
        net: allow unbound socket for packets in VRF when tcp_l3mdev_accept set
        netdevsim: fib: Fix reference count leak on route deletion failure
        wifi: rtw88: check the return value of alloc_workqueue()
        iavf: Fix max_rate limiting
        iavf: Fix 'tc qdisc show' listing too many queues
        netdevsim: Avoid allocation warnings triggered from user space
        net: rose: fix netdev reference changes
        net: ionic: fix error check for vlan flags in ionic_set_nic_features()
        dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
        net: usb: make USB_RTL8153_ECM non user configurable
        wireguard: ratelimiter: use hrtimer in selftest
        wireguard: allowedips: don't corrupt stack when detecting overflow
        HID: amd_sfh: Don't show client init failed as error when discovery fails
        clk: renesas: r9a06g032: Fix UART clkgrp bitsel
        mtd: maps: Fix refcount leak in of_flash_probe_versatile
        mtd: maps: Fix refcount leak in ap_flash_init
        mtd: rawnand: meson: Fix a potential double free issue
        of: check previous kernel's ima-kexec-buffer against memory bounds
        scsi: qla2xxx: edif: Reduce Initiator-Initiator thrashing
        scsi: qla2xxx: edif: Fix potential stuck session in sa update
        scsi: qla2xxx: edif: Reduce connection thrash
        scsi: qla2xxx: edif: Fix inconsistent check of db_flags
        scsi: qla2xxx: edif: Synchronize NPIV deletion with authentication application
        scsi: qla2xxx: edif: Add retry for ELS passthrough
        scsi: qla2xxx: edif: Fix n2n discovery issue with secure target
        scsi: qla2xxx: edif: Fix n2n login retry for secure device
        KVM: SVM: Unwind "speculative" RIP advancement if INTn injection "fails"
        KVM: SVM: Stuff next_rip on emulated INT3 injection if NRIPS is supported
        phy: samsung: exynosautov9-ufs: correct TSRV register configurations
        PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()
        PCI: tegra194: Fix PM error handling in tegra_pcie_config_ep()
        HID: cp2112: prevent a buffer overflow in cp2112_xfer()
        mtd: sm_ftl: Fix deadlock caused by cancel_work_sync in sm_release
        mtd: partitions: Fix refcount leak in parse_redboot_of
        mtd: parsers: ofpart: Fix refcount leak in bcm4908_partitions_fw_offset
        mtd: st_spi_fsm: Add a clk_disable_unprepare() in .probe()'s error path
        PCI: mediatek-gen3: Fix refcount leak in mtk_pcie_init_irq_domains()
        fpga: altera-pr-ip: fix unsigned comparison with less than zero
        usb: host: Fix refcount leak in ehci_hcd_ppc_of_probe
        usb: ohci-nxp: Fix refcount leak in ohci_hcd_nxp_probe
        usb: gadget: tegra-xudc: Fix error check in tegra_xudc_powerdomain_init()
        usb: xhci: tegra: Fix error check
        netfilter: xtables: Bring SPDX identifier back
        scsi: qla2xxx: edif: Send LOGO for unexpected IKE message
        scsi: qla2xxx: edif: Reduce disruption due to multiple app start
        scsi: qla2xxx: edif: Fix no login after app start
        scsi: qla2xxx: edif: Tear down session if keys have been removed
        scsi: qla2xxx: edif: Fix session thrash
        scsi: qla2xxx: edif: Fix no logout on delete for N2N
        iio: accel: bma400: Fix the scale min and max macro values
        platform/chrome: cros_ec: Always expose last resume result
        iio: accel: bma400: Reordering of header files
        clk: mediatek: reset: Fix written reset bit offset
        lib/test_hmm: avoid accessing uninitialized pages
        memremap: remove support for external pgmap refcounts
        mm/memremap: fix memunmap_pages() race with get_dev_pagemap()
        KVM: Don't set Accessed/Dirty bits for ZERO_PAGE
        mwifiex: Ignore BTCOEX events from the 88W8897 firmware
        mwifiex: fix sleep in atomic context bugs caused by dev_coredumpv
        scsi: iscsi: Allow iscsi_if_stop_conn() to be called from kernel
        scsi: iscsi: Add helper to remove a session from the kernel
        scsi: iscsi: Fix session removal on shutdown
        dmaengine: dw-edma: Fix eDMA Rd/Wr-channels and DMA-direction semantics
        mtd: dataflash: Add SPI ID table
        clk: qcom: camcc-sm8250: Fix halt on boot by reducing driver's init level
        misc: rtsx: Fix an error handling path in rtsx_pci_probe()
        driver core: fix potential deadlock in __driver_attach
        clk: qcom: clk-krait: unlock spin after mux completion
        clk: qcom: gcc-msm8939: Add missing SYSTEM_MM_NOC_BFDCD_CLK_SRC
        clk: qcom: gcc-msm8939: Fix bimc_ddr_clk_src rcgr base address
        clk: qcom: gcc-msm8939: Add missing system_mm_noc_bfdcd_clk_src
        clk: qcom: gcc-msm8939: Point MM peripherals to system_mm_noc clock
        usb: host: xhci: use snprintf() in xhci_decode_trb()
        RDMA/rxe: Fix deadlock in rxe_do_local_ops()
        clk: qcom: ipq8074: fix NSS core PLL-s
        clk: qcom: ipq8074: SW workaround for UBI32 PLL lock
        clk: qcom: ipq8074: fix NSS port frequency tables
        clk: qcom: ipq8074: set BRANCH_HALT_DELAY flag for UBI clocks
        clk: qcom: camcc-sdm845: Fix topology around titan_top power domain
        clk: qcom: camcc-sm8250: Fix topology around titan_top power domain
        clk: qcom: clk-rcg2: Fail Duty-Cycle configuration if MND divider is not enabled.
        clk: qcom: clk-rcg2: Make sure to not write d=0 to the NMD register
        mm/mempolicy: fix get_nodes out of bound access
        PCI: dwc: Stop link on host_init errors and de-initialization
        PCI: dwc: Add unroll iATU space support to dw_pcie_disable_atu()
        PCI: dwc: Disable outbound windows only for controllers using iATU
        PCI: dwc: Set INCREASE_REGION_SIZE flag based on limit address
        PCI: dwc: Deallocate EPC memory on dw_pcie_ep_init() errors
        PCI: dwc: Always enable CDM check if "snps,enable-cdm-check" exists
        soundwire: bus_type: fix remove and shutdown support
        soundwire: revisit driver bind/unbind and callbacks
        KVM: arm64: Don't return from void function
        dmaengine: sf-pdma: Add multithread support for a DMA channel
        PCI: endpoint: Don't stop controller when unbinding endpoint function
        scsi: qla2xxx: Check correct variable in qla24xx_async_gffid()
        intel_th: Fix a resource leak in an error handling path
        intel_th: msu-sink: Potential dereference of null pointer
        intel_th: msu: Fix vmalloced buffers
        binder: fix redefinition of seq_file attributes
        staging: rtl8192u: Fix sleep in atomic context bug in dm_fsync_timer_callback
        mmc: sdhci-of-esdhc: Fix refcount leak in esdhc_signal_voltage_switch
        mmc: mxcmmc: Silence a clang warning
        mmc: renesas_sdhi: Get the reset handle early in the probe
        memstick/ms_block: Fix some incorrect memory allocation
        memstick/ms_block: Fix a memory leak
        mmc: sdhci-of-at91: fix set_uhs_signaling rewriting of MC1R
        of: device: Fix missing of_node_put() in of_dma_set_restricted_buffer
        mmc: block: Add single read for 4k sector cards
        KVM: s390: pv: leak the topmost page table when destroy fails
        PCI/portdrv: Don't disable AER reporting in get_port_device_capability()
        PCI: qcom: Set up rev 2.1.0 PARF_PHY before enabling clocks
        scsi: smartpqi: Fix DMA direction for RAID requests
        xtensa: iss/network: provide release() callback
        xtensa: iss: fix handling error cases in iss_net_configure()
        usb: gadget: udc: amd5536 depends on HAS_DMA
        usb: aspeed-vhub: Fix refcount leak bug in ast_vhub_init_desc()
        usb: dwc3: core: Deprecate GCTL.CORESOFTRESET
        usb: dwc3: core: Do not perform GCTL_CORE_SOFTRESET during bootup
        usb: dwc3: qcom: fix missing optional irq warnings
        eeprom: idt_89hpesx: uninitialized data in idt_dbgfs_csr_write()
        phy: stm32: fix error return in stm32_usbphyc_phy_init
        interconnect: imx: fix max_node_id
        um: random: Don't initialise hwrng struct with zero
        RDMA/irdma: Fix a window for use-after-free
        RDMA/irdma: Fix VLAN connection with wildcard address
        RDMA/irdma: Fix setting of QP context err_rq_idx_valid field
        RDMA/rtrs-srv: Fix modinfo output for stringify
        RDMA/rtrs: Fix warning when use poll mode on client side.
        RDMA/rtrs: Replace duplicate check with is_pollqueue helper
        RDMA/rtrs: Introduce destroy_cq helper
        RDMA/rtrs: Do not allow sessname to contain special symbols / and .
        RDMA/rtrs: Rename rtrs_sess to rtrs_path
        RDMA/rtrs-srv: Rename rtrs_srv_sess to rtrs_srv_path
        RDMA/rtrs-clt: Rename rtrs_clt_sess to rtrs_clt_path
        RDMA/rtrs-clt: Replace list_next_or_null_rr_rcu with an inline function
        RDMA/qedr: Fix potential memory leak in __qedr_alloc_mr()
        RDMA/hns: Fix incorrect clearing of interrupt status register
        RDMA/siw: Fix duplicated reported IW_CM_EVENT_CONNECT_REPLY event
        iio: cros: Register FIFO callback after sensor is registered
        clk: qcom: gcc-msm8939: Fix weird field spacing in ftbl_gcc_camss_cci_clk
        RDMA/hfi1: fix potential memory leak in setup_base_ctxt()
        gpio: gpiolib-of: Fix refcount bugs in of_mm_gpiochip_add_data()
        HID: mcp2221: prevent a buffer overflow in mcp_smbus_write()
        HID: amd_sfh: Add NULL check for hid device
        dmaengine: imx-dma: Cast of_device_get_match_data() with (uintptr_t)
        scripts/gdb: lx-dmesg: read records individually
        scripts/gdb: fix 'lx-dmesg' on 32 bits arch
        RDMA/rxe: Fix mw bind to allow any consumer key portion
        mmc: cavium-octeon: Add of_node_put() when breaking out of loop
        mmc: cavium-thunderx: Add of_node_put() when breaking out of loop
        HID: alps: Declare U1_UNICORN_LEGACY support
        RDMA/rxe: For invalidate compare according to set keys in mr
        PCI: tegra194: Fix Root Port interrupt handling
        PCI: tegra194: Fix link up retry sequence
        HID: amd_sfh: Handle condition of "no sensors"
        USB: serial: fix tty-port initialized comments
        usb: cdns3: change place of 'priv_ep' assignment in cdns3_gadget_ep_dequeue(), cdns3_gadget_ep_enable()
        mtd: spi-nor: fix spi_nor_spimem_setup_op() call in spi_nor_erase_{sector,chip}()
        KVM: nVMX: Set UMIP bit CR4_FIXED1 MSR when emulating UMIP
        platform/olpc: Fix uninitialized data in debugfs write
        RDMA/srpt: Duplicate port name members
        RDMA/srpt: Introduce a reference count in struct srpt_device
        RDMA/srpt: Fix a use-after-free
        android: binder: stop saving a pointer to the VMA
        mm/mmap.c: fix missing call to vm_unacct_memory in mmap_region
        selftests: kvm: set rax before vmcall
        of/fdt: declared return type does not match actual return type
        RDMA/mlx5: Add missing check for return value in get namespace flow
        RDMA/rxe: Add memory barriers to kernel queues
        RDMA/rxe: Remove the is_user members of struct rxe_sq/rxe_rq/rxe_srq
        RDMA/rxe: Fix error unwind in rxe_create_qp()
        block/rnbd-srv: Set keep_id to true after mutex_trylock
        null_blk: fix ida error handling in null_add_dev()
        nvme: use command_id instead of req->tag in trace_nvme_complete_rq()
        nvme: define compat_ioctl again to unbreak 32-bit userspace.
        nvme: disable namespace access for unsupported metadata
        nvme: don't return an error from nvme_configure_metadata
        nvme: catch -ENODEV from nvme_revalidate_zones again
        block/bio: remove duplicate append pages code
        block: ensure iov_iter advances for added pages
        jbd2: fix outstanding credits assert in jbd2_journal_commit_transaction()
        ext4: recover csum seed of tmp_inode after migrating to extents
        jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted
        usb: cdns3: Don't use priv_dev uninitialized in cdns3_gadget_ep_enable()
        opp: Fix error check in dev_pm_opp_attach_genpd()
        ASoC: cros_ec_codec: Fix refcount leak in cros_ec_codec_platform_probe
        ASoC: samsung: Fix error handling in aries_audio_probe
        ASoC: imx-audmux: Silence a clang warning
        ASoC: mediatek: mt8173: Fix refcount leak in mt8173_rt5650_rt5676_dev_probe
        ASoC: mt6797-mt6351: Fix refcount leak in mt6797_mt6351_dev_probe
        ASoC: codecs: da7210: add check for i2c_add_driver
        ASoC: mediatek: mt8173-rt5650: Fix refcount leak in mt8173_rt5650_dev_probe
        serial: 8250: Export ICR access helpers for internal use
        serial: 8250: dma: Allow driver operations before starting DMA transfers
        serial: 8250_dw: Store LSR into lsr_saved_flags in dw8250_tx_wait_empty()
        ASoC: codecs: msm8916-wcd-digital: move gains from SX_TLV to S8_TLV
        ASoC: codecs: wcd9335: move gains from SX_TLV to S8_TLV
        rpmsg: char: Add mutex protection for rpmsg_eptdev_open()
        rpmsg: mtk_rpmsg: Fix circular locking dependency
        remoteproc: k3-r5: Fix refcount leak in k3_r5_cluster_of_init
        selftests/livepatch: better synchronize test_klp_callbacks_busy
        profiling: fix shift too large makes kernel panic
        remoteproc: imx_rproc: Fix refcount leak in imx_rproc_addr_init
        ASoC: samsung: h1940_uda1380: include proepr GPIO consumer header
        powerpc/perf: Optimize clearing the pending PMI and remove WARN_ON for PMI check in power_pmu_disable
        ASoC: samsung: change gpiod_speaker_power and rx1950_audio from global to static variables
        tty: n_gsm: Delete gsmtty open SABM frame when config requester
        tty: n_gsm: fix user open not possible at responder until initiator open
        tty: n_gsm: fix tty registration before control channel open
        tty: n_gsm: fix wrong queuing behavior in gsm_dlci_data_output()
        tty: n_gsm: fix missing timer to handle stalled links
        tty: n_gsm: fix non flow control frames during mux flow off
        tty: n_gsm: fix packet re-transmission without open control channel
        tty: n_gsm: fix race condition in gsmld_write()
        tty: n_gsm: fix resource allocation order in gsm_activate_mux()
        ASoC: qcom: Fix missing of_node_put() in asoc_qcom_lpass_cpu_platform_probe()
        ASoC: imx-card: Fix DSD/PDM mclk frequency
        remoteproc: qcom: wcnss: Fix handling of IRQs
        vfio/ccw: Do not change FSM state in subchannel event
        serial: 8250_fsl: Don't report FE, PE and OE twice
        tty: n_gsm: fix wrong T1 retry count handling
        tty: n_gsm: fix DM command
        tty: n_gsm: fix missing corner cases in gsmld_poll()
        MIPS: vdso: Utilize __pa() for gic_pfn
        swiotlb: fail map correctly with failed io_tlb_default_mem
        ASoC: mt6359: Fix refcount leak bug
        serial: 8250_bcm7271: Save/restore RTS in suspend/resume
        iommu/exynos: Handle failed IOMMU device registration properly
        9p: fix a bunch of checkpatch warnings
        9p: Drop kref usage
        9p: Add client parameter to p9_req_put()
        net: 9p: fix refcount leak in p9_read_work() error handling
        MIPS: Fixed __debug_virt_addr_valid()
        rpmsg: qcom_smd: Fix refcount leak in qcom_smd_parse_edge
        kfifo: fix kfifo_to_user() return type
        lib/smp_processor_id: fix imbalanced instrumentation_end() call
        proc: fix a dentry lock race between release_task and lookup
        remoteproc: qcom: pas: Check if coredump is enabled
        remoteproc: sysmon: Wait for SSCTL service to come up
        mfd: t7l66xb: Drop platform disable callback
        mfd: max77620: Fix refcount leak in max77620_initialise_fps
        iommu/arm-smmu: qcom_iommu: Add of_node_put() when breaking out of loop
        perf tools: Fix dso_id inode generation comparison
        s390/dump: fix old lowcore virtual vs physical address confusion
        s390/maccess: fix semantics of memcpy_real() and its callers
        s390/crash: fix incorrect number of bytes to copy to user space
        s390/zcore: fix race when reading from hardware system area
        ASoC: fsl_asrc: force cast the asrc_format type
        ASoC: fsl-asoc-card: force cast the asrc_format type
        ASoC: fsl_easrc: use snd_pcm_format_t type for sample_format
        ASoC: imx-card: use snd_pcm_format_t type for asrc_format
        ASoC: qcom: q6dsp: Fix an off-by-one in q6adm_alloc_copp()
        fuse: Remove the control interface for virtio-fs
        ASoC: audio-graph-card: Add of_node_put() in fail path
        watchdog: sp5100_tco: Fix a memory leak of EFCH MMIO resource
        watchdog: armada_37xx_wdt: check the return value of devm_ioremap() in armada_37xx_wdt_probe()
        video: fbdev: amba-clcd: Fix refcount leak bugs
        video: fbdev: sis: fix typos in SiS_GetModeID()
        ASoC: mchp-spdifrx: disable end of block interrupt on failures
        powerpc/32: Call mmu_mark_initmem_nx() regardless of data block mapping.
        powerpc/32: Do not allow selection of e5500 or e6500 CPUs on PPC32
        powerpc/iommu: Fix iommu_table_in_use for a small default DMA window case
        powerpc/pci: Prefer PCI domain assignment via DT 'linux,pci-domain' and alias
        tty: serial: fsl_lpuart: correct the count of break characters
        s390/dump: fix os_info virtual vs physical address confusion
        s390/smp: cleanup target CPU callback starting
        s390/smp: cleanup control register update routines
        s390/maccess: rework absolute lowcore accessors
        s390/smp: enforce lowcore protection on CPU restart
        f2fs: fix to remove F2FS_COMPR_FL and tag F2FS_NOCOMP_FL at the same time
        powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader
        powerpc/xive: Fix refcount leak in xive_get_max_prio
        powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address
        perf symbol: Fail to read phdr workaround
        kprobes: Forbid probing on trampoline and BPF code areas
        x86/bus_lock: Don't assume the init value of DEBUGCTLMSR.BUS_LOCK_DETECT to be zero
        powerpc/pci: Fix PHB numbering when using opal-phbid
        genelf: Use HAVE_LIBCRYPTO_SUPPORT, not the never defined HAVE_LIBCRYPTO
        scripts/faddr2line: Fix vmlinux detection on arm64
        sched/deadline: Merge dl_task_can_attach() and dl_cpu_busy()
        sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed
        x86/numa: Use cpumask_available instead of hardcoded NULL check
        video: fbdev: arkfb: Fix a divide-by-zero bug in ark_set_pixclock()
        tools/thermal: Fix possible path truncations
        sched: Fix the check of nr_running at queue wakelist
        sched: Remove the limitation of WF_ON_CPU on wakelist if wakee cpu is idle
        sched/core: Do not requeue task on CPU excluded from cpus_mask
        x86/entry: Build thunk_$(BITS) only if CONFIG_PREEMPTION=y
        f2fs: allow compression for mmap files in compress_mode=user
        f2fs: do not allow to decompress files have FI_COMPRESS_RELEASED
        video: fbdev: vt8623fb: Check the size of screen before memset_io()
        video: fbdev: arkfb: Check the size of screen before memset_io()
        video: fbdev: s3fb: Check the size of screen before memset_io()
        scsi: ufs: core: Correct ufshcd_shutdown() flow
        scsi: zfcp: Fix missing auto port scan and thus missing target ports
        scsi: qla2xxx: Fix imbalance vha->vref_count
        scsi: qla2xxx: Fix discovery issues in FC-AL topology
        scsi: qla2xxx: Turn off multi-queue for 8G adapters
        scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts
        scsi: qla2xxx: Fix excessive I/O error messages by default
        scsi: qla2xxx: Fix erroneous mailbox timeout after PCI error injection
        scsi: qla2xxx: Wind down adapter after PCIe error
        scsi: qla2xxx: Fix losing FCP-2 targets on long port disable with I/Os
        scsi: qla2xxx: Fix losing target when it reappears during delete
        scsi: qla2xxx: Fix losing FCP-2 targets during port perturbation tests
        x86/bugs: Enable STIBP for IBPB mitigated RETBleed
        ftrace/x86: Add back ftrace_expected assignment
        x86/kprobes: Update kcb status flag after singlestepping
        x86/olpc: fix 'logical not is only applied to the left hand side'
        SMB3: fix lease break timeout when multiple deferred close handles for the same file.
        posix-cpu-timers: Cleanup CPU timers before freeing them during exec
        Input: gscps2 - check return value of ioremap() in gscps2_probe()
        __follow_mount_rcu(): verify that mount_lock remains unchanged
        spmi: trace: fix stack-out-of-bound access in SPMI tracing functions
        drm/mediatek: Allow commands to be sent during video mode
        drm/mediatek: Keep dsi as LP00 before dcs cmds transfer
        crypto: blake2s - remove shash module
        drm/dp/mst: Read the extended DPCD capabilities during system resume
        drm/vc4: drv: Adopt the dma configuration from the HVS or V3D component
        usbnet: smsc95xx: Don't clear read-only PHY interrupt
        usbnet: smsc95xx: Avoid link settings race on interrupt reception
        usbnet: smsc95xx: Forward PHY interrupts to PHY driver to avoid polling
        usbnet: smsc95xx: Fix deadlock on runtime resume
        firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails
        scsi: lpfc: Fix EEH support for NVMe I/O
        scsi: lpfc: SLI path split: Refactor lpfc_iocbq
        scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4
        scsi: lpfc: SLI path split: Refactor SCSI paths
        scsi: lpfc: Remove extra atomic_inc on cmd_pending in queuecommand after VMID
        intel_th: pci: Add Meteor Lake-P support
        intel_th: pci: Add Raptor Lake-S PCH support
        intel_th: pci: Add Raptor Lake-S CPU support
        KVM: set_msr_mce: Permit guests to ignore single-bit ECC errors
        KVM: x86: Signal #GP, not -EPERM, on bad WRMSR(MCi_CTL/STATUS)
        iommu/vt-d: avoid invalid memory access via node_online(NUMA_NO_NODE)
        PCI/AER: Iterate over error counters instead of error strings
        PCI: qcom: Power on PHY before IPQ8074 DBI register accesses
        serial: 8250_pci: Refactor the loop in pci_ite887x_init()
        serial: 8250_pci: Replace dev_*() by pci_*() macros
        serial: 8250: Fold EndRun device support into OxSemi Tornado code
        serial: 8250: Add proper clock handling for OxSemi PCIe devices
        tty: 8250: Add support for Brainboxes PX cards.
        dm writecache: set a default MAX_WRITEBACK_JOBS
        kexec, KEYS, s390: Make use of built-in and secondary keyring for signature verification
        dm thin: fix use-after-free crash in dm_sm_register_threshold_callback
        net/9p: Initialize the iounit field during fid creation
        ARM: remove some dead code
        timekeeping: contribute wall clock to rng on time change
        locking/csd_lock: Change csdlock_debug from early_param to __setup
        block: remove the struct blk_queue_ctx forward declaration
        block: don't allow the same type rq_qos add more than once
        btrfs: ensure pages are unlocked on cow_file_range() failure
        btrfs: reset block group chunk force if we have to wait
        btrfs: properly flag filesystem with BTRFS_FEATURE_INCOMPAT_BIG_METADATA
        ACPI: CPPC: Do not prevent CPPC from working in the future
        powerpc/powernv/kvm: Use darn for H_RANDOM on Power9
        KVM: x86/pmu: Introduce the ctrl_mask value for fixed counter
        KVM: VMX: Mark all PERF_GLOBAL_(OVF)_CTRL bits reserved if there's no vPMU
        KVM: x86/pmu: Ignore pmu->global_ctrl check if vPMU doesn't support global_ctrl
        KVM: VMX: Add helper to check if the guest PMU has PERF_GLOBAL_CTRL
        KVM: nVMX: Attempt to load PERF_GLOBAL_CTRL on nVMX xfer iff it exists
        dm raid: fix address sanitizer warning in raid_status
        dm raid: fix address sanitizer warning in raid_resume
        tracing: Add '__rel_loc' using trace event macros
        tracing: Avoid -Warray-bounds warning for __rel_loc macro
        ext4: update s_overhead_clusters in the superblock during an on-line resize
        ext4: fix extent status tree race in writeback error recovery path
        ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h
        ext4: fix use-after-free in ext4_xattr_set_entry
        ext4: correct max_inline_xattr_value_size computing
        ext4: correct the misjudgment in ext4_iget_extra_inode
        ext4: fix warning in ext4_iomap_begin as race between bmap and write
        ext4: check if directory block is within i_size
        ext4: make sure ext4_append() always allocates new block
        ext4: remove EA inode entry from mbcache on inode eviction
        ext4: use kmemdup() to replace kmalloc + memcpy
        ext4: unindent codeblock in ext4_xattr_block_set()
        ext4: fix race when reusing xattr blocks
        KEYS: asymmetric: enforce SM2 signature use pkey algo
        tpm: eventlog: Fix section mismatch for DEBUG_SECTION_MISMATCH
        xen-blkback: fix persistent grants negotiation
        xen-blkback: Apply 'feature_persistent' parameter when connect
        xen-blkfront: Apply 'feature_persistent' parameter when connect
        powerpc: Fix eh field when calling lwarx on PPC32
        tracing: Use a struct alignof to determine trace event field alignment
        net_sched: cls_route: remove from list when handle is 0
        mac80211: fix a memory leak where sta_info is not freed
        tcp: fix over estimation in sk_forced_mem_schedule()
        crypto: lib/blake2s - reduce stack frame usage in self test
        Revert "mwifiex: fix sleep in atomic context bugs caused by dev_coredumpv"
        Revert "s390/smp: enforce lowcore protection on CPU restart"
        drm/bridge: tc358767: Fix (e)DP bridge endpoint parsing in dedicated function
        net: phy: smsc: Disable Energy Detect Power-Down in interrupt mode
        drm/vc4: change vc4_dma_range_matches from a global to static
        tracing/perf: Avoid -Warray-bounds warning for __rel_loc macro
        drm/msm: Fix dirtyfb refcounting
        drm/meson: Fix refcount leak in meson_encoder_hdmi_init
        io_uring: mem-account pbuf buckets
        Revert "net: usb: ax88179_178a needs FLAG_SEND_ZLP"
        Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression
        drm/bridge: Move devm_drm_of_get_bridge to bridge/panel.c
        scsi: lpfc: Fix locking for lpfc_sli_iocbq_lookup()
        scsi: lpfc: Fix element offset in __lpfc_sli_release_iocbq_s4()
        scsi: lpfc: Resolve some cleanup issues following SLI path refactoring
        Linux 5.15.61

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iec359ed301bcbcd6e19b67ee8534418fab26850b
2022-09-21 17:30:12 +02:00
Dom Cobley
0dd9984696 Merge tag 'v5.15.64' into rpi-5.15.y
This is the 5.15.64 stable release
2022-09-05 12:46:18 +01:00
Pawan Gupta
75fa6c733b x86/bugs: Add "unknown" reporting for MMIO Stale Data
commit 7df548840c496b0141fb2404b889c346380c2b22 upstream.

Older Intel CPUs that are not in the affected processor list for MMIO
Stale Data vulnerabilities currently report "Not affected" in sysfs,
which may not be correct. Vulnerability status for these older CPUs is
unknown.

Add known-not-affected CPUs to the whitelist. Report "unknown"
mitigation status for CPUs that are not in blacklist, whitelist and also
don't enumerate MSR ARCH_CAPABILITIES bits that reflect hardware
immunity to MMIO Stale Data vulnerabilities.

Mitigation is not deployed when the status is unknown.

  [ bp: Massage, fixup. ]

Fixes: 8d50cdf8b834 ("x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data")
Suggested-by: Andrew Cooper <andrew.cooper3@citrix.com>
Suggested-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/a932c154772f2121794a5f2eded1a11013114711.1657846269.git.pawan.kumar.gupta@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-31 17:16:47 +02:00
Kuniyuki Iwashima
4d2c808d09 net: Fix data-races around netdev_max_backlog.
[ Upstream commit 5dcd08cd19912892586c6082d56718333e2d19db ]

While reading netdev_max_backlog, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.

While at it, we remove the unnecessary spaces in the doc.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-31 17:16:42 +02:00
Dom Cobley
64ad74084f Merge tag 'v5.15.61' into rpi-5.15.y
This is the 5.15.61 stable release
2022-08-23 14:42:52 +01:00
Dom Cobley
a309898597 Merge tag 'v5.15.60' into rpi-5.15.y
This is the 5.15.60 stable release
2022-08-23 14:07:41 +01:00
Dom Cobley
95de22bb80 Merge tag 'v5.15.59' into rpi-5.15.y
This is the 5.15.59 stable release
2022-08-23 14:07:38 +01:00
Dom Cobley
4a52697029 Merge tag 'v5.15.58' into rpi-5.15.y
This is the 5.15.58 stable release
2022-08-23 14:07:35 +01:00
Dom Cobley
533693d71c Merge tag 'v5.15.57' into rpi-5.15.y
This is the 5.15.57 stable release
2022-08-23 14:07:27 +01:00
Kim Phillips
0b00cb428f x86/bugs: Enable STIBP for IBPB mitigated RETBleed
commit e6cfcdda8cbe81eaf821c897369a65fec987b404 upstream.

AMD's "Technical Guidance for Mitigating Branch Type Confusion,
Rev. 1.0 2022-07-12" whitepaper, under section 6.1.2 "IBPB On
Privileged Mode Entry / SMT Safety" says:

  Similar to the Jmp2Ret mitigation, if the code on the sibling thread
  cannot be trusted, software should set STIBP to 1 or disable SMT to
  ensure SMT safety when using this mitigation.

So, like already being done for retbleed=unret, and now also for
retbleed=ibpb, force STIBP on machines that have it, and report its SMT
vulnerability status accordingly.

 [ bp: Remove the "we" and remove "[AMD]" applicability parameter which
   doesn't work here. ]

Fixes: 3ebc17006888 ("x86/bugs: Add retbleed=ibpb")
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org # 5.10, 5.15, 5.19
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537
Link: https://lore.kernel.org/r/20220804192201.439596-1-kim.phillips@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-17 14:24:18 +02:00
Mikulas Patocka
a638fa9745 dm writecache: count number of blocks discarded, not number of discard bios
[ Upstream commit 2ee73ef60db4d79b9f9b8cd501e8188b5179449f ]

Change dm-writecache, so that it counts the number of blocks discarded
instead of the number of discard bios. Make it consistent with the
read and write statistics counters that were changed to count the
number of blocks instead of bios.

Fixes: e3a35d0340 ("dm writecache: add event counters")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 14:23:13 +02:00
Mikulas Patocka
fc988f1ca2 dm writecache: count number of blocks written, not number of write bios
[ Upstream commit b2676e1482af89714af6988ce5d31a84692e2530 ]

Change dm-writecache, so that it counts the number of blocks written
instead of the number of write bios. Bios can be split and requeued
using the dm_accept_partial_bio function, so counting bios caused
inaccurate results.

Fixes: e3a35d0340 ("dm writecache: add event counters")
Reported-by: Yu Kuai <yukuai1@huaweicloud.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 14:23:13 +02:00
Mikulas Patocka
3a2500b73a dm writecache: count number of blocks read, not number of read bios
[ Upstream commit 2c6e755b49d273243431f5f1184654e71221fc78 ]

Change dm-writecache, so that it counts the number of blocks read
instead of the number of read bios. Bios can be split and requeued
using the dm_accept_partial_bio function, so counting bios caused
inaccurate results.

Fixes: e3a35d0340 ("dm writecache: add event counters")
Reported-by: Yu Kuai <yukuai1@huaweicloud.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 14:23:13 +02:00
Wyes Karny
932b5e6524 x86: Handle idle=nomwait cmdline properly for x86_idle
[ Upstream commit 8bcedb4ce04750e1ccc9a6b6433387f6a9166a56 ]

When kernel is booted with idle=nomwait do not use MWAIT as the
default idle state.

If the user boots the kernel with idle=nomwait, it is a clear
direction to not use mwait as the default idle state.
However, the current code does not take this into consideration
while selecting the default idle state on x86.

Fix it by checking for the idle=nomwait boot option in
prefer_mwait_c1_over_halt().

Also update the documentation around idle=nomwait appropriately.

[ dhansen: tweak commit message ]

Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Link: https://lkml.kernel.org/r/fdc2dc2d0a1bc21c2f53d989ea2d2ee3ccbc0dbe.1654538381.git-series.wyes.karny@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 14:23:00 +02:00
Greg Kroah-Hartman
08c4bae24d Merge 5.15.60 into android14-5.15
Changes in 5.15.60
	x86/speculation: Make all RETbleed mitigations 64-bit only
	selftests/bpf: Extend verifier and bpf_sock tests for dst_port loads
	selftests/bpf: Check dst_port only on the client socket
	block: fix default IO priority handling again
	tools/vm/slabinfo: Handle files in debugfs
	ACPI: video: Force backlight native for some TongFang devices
	ACPI: video: Shortening quirk list by identifying Clevo by board_name only
	ACPI: APEI: Better fix to avoid spamming the console with old error logs
	crypto: arm64/poly1305 - fix a read out-of-bound
	KVM: x86: do not report a vCPU as preempted outside instruction boundaries
	KVM: x86: do not set st->preempted when going back to user space
	KVM: selftests: Make hyperv_clock selftest more stable
	tools/kvm_stat: fix display of error when multiple processes are found
	selftests: KVM: Handle compiler optimizations in ucall
	KVM: x86/svm: add __GFP_ACCOUNT to __sev_dbg_{en,de}crypt_user()
	arm64: set UXN on swapper page tables
	btrfs: zoned: prevent allocation from previous data relocation BG
	btrfs: zoned: fix critical section of relocation inode writeback
	Bluetooth: hci_bcm: Add BCM4349B1 variant
	Bluetooth: hci_bcm: Add DT compatible for CYW55572
	dt-bindings: bluetooth: broadcom: Add BCM4349B1 DT binding
	Bluetooth: btusb: Add support of IMC Networks PID 0x3568
	Bluetooth: btusb: Add Realtek RTL8852C support ID 0x04CA:0x4007
	Bluetooth: btusb: Add Realtek RTL8852C support ID 0x04C5:0x1675
	Bluetooth: btusb: Add Realtek RTL8852C support ID 0x0CB8:0xC558
	Bluetooth: btusb: Add Realtek RTL8852C support ID 0x13D3:0x3587
	Bluetooth: btusb: Add Realtek RTL8852C support ID 0x13D3:0x3586
	macintosh/adb: fix oob read in do_adb_query() function
	x86/speculation: Add RSB VM Exit protections
	x86/speculation: Add LFENCE to RSB fill sequence
	Linux 5.15.60

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I297301e2121a2fdda063cada7377da1ae414da2a
2022-08-11 15:57:56 +02:00
Daniel Sneddon
7fcd99e889 x86/speculation: Add RSB VM Exit protections
commit 2b1299322016731d56807aa49254a5ea3080b6b3 upstream.

tl;dr: The Enhanced IBRS mitigation for Spectre v2 does not work as
documented for RET instructions after VM exits. Mitigate it with a new
one-entry RSB stuffing mechanism and a new LFENCE.

== Background ==

Indirect Branch Restricted Speculation (IBRS) was designed to help
mitigate Branch Target Injection and Speculative Store Bypass, i.e.
Spectre, attacks. IBRS prevents software run in less privileged modes
from affecting branch prediction in more privileged modes. IBRS requires
the MSR to be written on every privilege level change.

To overcome some of the performance issues of IBRS, Enhanced IBRS was
introduced.  eIBRS is an "always on" IBRS, in other words, just turn
it on once instead of writing the MSR on every privilege level change.
When eIBRS is enabled, more privileged modes should be protected from
less privileged modes, including protecting VMMs from guests.

== Problem ==

Here's a simplification of how guests are run on Linux' KVM:

void run_kvm_guest(void)
{
	// Prepare to run guest
	VMRESUME();
	// Clean up after guest runs
}

The execution flow for that would look something like this to the
processor:

1. Host-side: call run_kvm_guest()
2. Host-side: VMRESUME
3. Guest runs, does "CALL guest_function"
4. VM exit, host runs again
5. Host might make some "cleanup" function calls
6. Host-side: RET from run_kvm_guest()

Now, when back on the host, there are a couple of possible scenarios of
post-guest activity the host needs to do before executing host code:

* on pre-eIBRS hardware (legacy IBRS, or nothing at all), the RSB is not
touched and Linux has to do a 32-entry stuffing.

* on eIBRS hardware, VM exit with IBRS enabled, or restoring the host
IBRS=1 shortly after VM exit, has a documented side effect of flushing
the RSB except in this PBRSB situation where the software needs to stuff
the last RSB entry "by hand".

IOW, with eIBRS supported, host RET instructions should no longer be
influenced by guest behavior after the host retires a single CALL
instruction.

However, if the RET instructions are "unbalanced" with CALLs after a VM
exit as is the RET in #6, it might speculatively use the address for the
instruction after the CALL in #3 as an RSB prediction. This is a problem
since the (untrusted) guest controls this address.

Balanced CALL/RET instruction pairs such as in step #5 are not affected.

== Solution ==

The PBRSB issue affects a wide variety of Intel processors which
support eIBRS. But not all of them need mitigation. Today,
X86_FEATURE_RSB_VMEXIT triggers an RSB filling sequence that mitigates
PBRSB. Systems setting RSB_VMEXIT need no further mitigation - i.e.,
eIBRS systems which enable legacy IBRS explicitly.

However, such systems (X86_FEATURE_IBRS_ENHANCED) do not set RSB_VMEXIT
and most of them need a new mitigation.

Therefore, introduce a new feature flag X86_FEATURE_RSB_VMEXIT_LITE
which triggers a lighter-weight PBRSB mitigation versus RSB_VMEXIT.

The lighter-weight mitigation performs a CALL instruction which is
immediately followed by a speculative execution barrier (INT3). This
steers speculative execution to the barrier -- just like a retpoline
-- which ensures that speculation can never reach an unbalanced RET.
Then, ensure this CALL is retired before continuing execution with an
LFENCE.

In other words, the window of exposure is opened at VM exit where RET
behavior is troublesome. While the window is open, force RSB predictions
sampling for RET targets to a dead end at the INT3. Close the window
with the LFENCE.

There is a subset of eIBRS systems which are not vulnerable to PBRSB.
Add these systems to the cpu_vuln_whitelist[] as NO_EIBRS_PBRSB.
Future systems that aren't vulnerable will set ARCH_CAP_PBRSB_NO.

  [ bp: Massage, incorporate review comments from Andy Cooper. ]

Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Co-developed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-11 13:07:54 +02:00
Will Deacon
807ee6de4c UPSTREAM: KVM: arm64: Ignore 'kvm-arm.mode=protected' when using VHE
Ignore 'kvm-arm.mode=protected' when using VHE so that kvm_get_mode()
only returns KVM_MODE_PROTECTED on systems where the feature is available.

Cc: David Brazdil <dbrazdil@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220609121223.2551-4-will@kernel.org
(cherry picked from commit cde5042adf11b0a30a6ce0ec3d071afcf8d2efaf)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Bug: 233588291
Change-Id: Ib9b884594fa5f8f1cba444ca9054dc0d3a6c8b0c
2022-08-10 08:59:13 +01:00
Greg Kroah-Hartman
046ce7a74e Merge 5.15.59 into android14-5.15
Changes in 5.15.59
	Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put
	Revert "ocfs2: mount shared volume without ha stack"
	ntfs: fix use-after-free in ntfs_ucsncmp()
	fs: sendfile handles O_NONBLOCK of out_fd
	secretmem: fix unhandled fault in truncate
	mm: fix page leak with multiple threads mapping the same page
	hugetlb: fix memoryleak in hugetlb_mcopy_atomic_pte
	asm-generic: remove a broken and needless ifdef conditional
	s390/archrandom: prevent CPACF trng invocations in interrupt context
	nouveau/svm: Fix to migrate all requested pages
	drm/simpledrm: Fix return type of simpledrm_simple_display_pipe_mode_valid()
	watch_queue: Fix missing rcu annotation
	watch_queue: Fix missing locking in add_watch_to_object()
	tcp: Fix data-races around sysctl_tcp_dsack.
	tcp: Fix a data-race around sysctl_tcp_app_win.
	tcp: Fix a data-race around sysctl_tcp_adv_win_scale.
	tcp: Fix a data-race around sysctl_tcp_frto.
	tcp: Fix a data-race around sysctl_tcp_nometrics_save.
	tcp: Fix data-races around sysctl_tcp_no_ssthresh_metrics_save.
	ice: check (DD | EOF) bits on Rx descriptor rather than (EOP | RS)
	ice: do not setup vlan for loopback VSI
	scsi: ufs: host: Hold reference returned by of_parse_phandle()
	Revert "tcp: change pingpong threshold to 3"
	octeontx2-pf: Fix UDP/TCP src and dst port tc filters
	tcp: Fix data-races around sysctl_tcp_moderate_rcvbuf.
	tcp: Fix a data-race around sysctl_tcp_limit_output_bytes.
	tcp: Fix a data-race around sysctl_tcp_challenge_ack_limit.
	scsi: core: Fix warning in scsi_alloc_sgtables()
	scsi: mpt3sas: Stop fw fault watchdog work item during system shutdown
	net: ping6: Fix memleak in ipv6_renew_options().
	ipv6/addrconf: fix a null-ptr-deref bug for ip6_ptr
	net/tls: Remove the context from the list in tls_device_down
	igmp: Fix data-races around sysctl_igmp_qrv.
	net: pcs: xpcs: propagate xpcs_read error to xpcs_get_state_c37_sgmii
	net: sungem_phy: Add of_node_put() for reference returned by of_get_parent()
	tcp: Fix a data-race around sysctl_tcp_min_tso_segs.
	tcp: Fix a data-race around sysctl_tcp_min_rtt_wlen.
	tcp: Fix a data-race around sysctl_tcp_autocorking.
	tcp: Fix a data-race around sysctl_tcp_invalid_ratelimit.
	Documentation: fix sctp_wmem in ip-sysctl.rst
	macsec: fix NULL deref in macsec_add_rxsa
	macsec: fix error message in macsec_add_rxsa and _txsa
	macsec: limit replay window size with XPN
	macsec: always read MACSEC_SA_ATTR_PN as a u64
	net: macsec: fix potential resource leak in macsec_add_rxsa() and macsec_add_txsa()
	net: mld: fix reference count leak in mld_{query | report}_work()
	tcp: Fix data-races around sk_pacing_rate.
	net: Fix data-races around sysctl_[rw]mem(_offset)?.
	tcp: Fix a data-race around sysctl_tcp_comp_sack_delay_ns.
	tcp: Fix a data-race around sysctl_tcp_comp_sack_slack_ns.
	tcp: Fix a data-race around sysctl_tcp_comp_sack_nr.
	tcp: Fix data-races around sysctl_tcp_reflect_tos.
	ipv4: Fix data-races around sysctl_fib_notify_on_flag_change.
	i40e: Fix interface init with MSI interrupts (no MSI-X)
	sctp: fix sleep in atomic context bug in timer handlers
	octeontx2-pf: cn10k: Fix egress ratelimit configuration
	netfilter: nf_queue: do not allow packet truncation below transport header offset
	virtio-net: fix the race between refill work and close
	perf symbol: Correct address for bss symbols
	sfc: disable softirqs for ptp TX
	sctp: leave the err path free in sctp_stream_init to sctp_stream_free
	ARM: crypto: comment out gcc warning that breaks clang builds
	mm/hmm: fault non-owner device private entries
	page_alloc: fix invalid watermark check on a negative value
	ARM: 9216/1: Fix MAX_DMA_ADDRESS overflow
	EDAC/ghes: Set the DIMM label unconditionally
	docs/kernel-parameters: Update descriptions for "mitigations=" param with retbleed
	locking/rwsem: Allow slowpath writer to ignore handoff bit if not set by first waiter
	x86/bugs: Do not enable IBPB at firmware entry when IBPB is not available
	Linux 5.15.59

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I4f2002d38aea467e150a912f50d456c41b23de89
2022-08-04 15:18:41 +02:00
Marc Zyngier
82e2a5389c ANDROID: BACKPORT: arm64: Enroll into KVM's MMIO guard if required
Should a guest desire to enroll into the MMIO guard, allow it to
do so with a command-line option.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Bug: 233587962
Change-Id: Ia9a77f693531740500739693c52b4959abacafd4
[willdeacon@: Add hypercall IDs]
Signed-off-by: Will Deacon <willdeacon@google.com>
2022-08-04 13:03:53 +00:00
Will Deacon
9cd6530cd8 Revert "ANDROID: KVM: arm64: Ignore 'kvm-arm.mode=protected' when using VHE"
This reverts commit 13e73a21a9.

Bug: 233587962
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I14dafb03c3225941aafda6bdffbe5ca82ab338c0
2022-08-04 13:03:53 +00:00
Will Deacon
cbc4618d5f Revert "ANDROID: arm64: Enroll into KVM's MMIO guard if required"
This reverts commit de5c2716e3.

Bug: 233587962
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I808f1e99876cb1945ffb47ee040b71912cf08468
2022-08-04 13:03:53 +00:00
Eiichi Tsukata
66d31cef48 docs/kernel-parameters: Update descriptions for "mitigations=" param with retbleed
commit ea304a8b89fd0d6cf94ee30cb139dc23d9f1a62f upstream.

Updates descriptions for "mitigations=off" and "mitigations=auto,nosmt"
with the respective retbleed= settings.

Signed-off-by: Eiichi Tsukata <eiichi.tsukata@nutanix.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: corbet@lwn.net
Link: https://lore.kernel.org/r/20220728043907.165688-1-eiichi.tsukata@nutanix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-03 12:03:55 +02:00
Suren Baghdasaryan
e2b6c5f7ee mm/pagealloc: sysctl: change watermark_scale_factor max limit to 30%
[ Upstream commit 39c65a94cd9661532be150e88f8b02f4a6844a35 ]

For embedded systems with low total memory, having to run applications
with relatively large memory requirements, 10% max limitation for
watermark_scale_factor poses an issue of triggering direct reclaim every
time such application is started.  This results in slow application
startup times and bad end-user experience.

By increasing watermark_scale_factor max limit we allow vendors more
flexibility to choose the right level of kswapd aggressiveness for their
device and workload requirements.

Link: https://lkml.kernel.org/r/20211124193604.2758863-1-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Lukas Middendorf <kernel@tuxforce.de>
Cc: Antti Palosaari <crope@iki.fi>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Zhang Yi <yi.zhang@huawei.com>
Cc: Fengfei Xi <xi.fengfei@h3c.com>
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-07-29 17:25:11 +02:00
Greg Kroah-Hartman
4f868bc314 Merge 5.15.57 into android14-5.15
Changes in 5.15.57
	x86/traps: Use pt_regs directly in fixup_bad_iret()
	x86/entry: Switch the stack after error_entry() returns
	x86/entry: Move PUSH_AND_CLEAR_REGS out of error_entry()
	x86/entry: Don't call error_entry() for XENPV
	objtool: Classify symbols
	objtool: Explicitly avoid self modifying code in .altinstr_replacement
	objtool: Shrink struct instruction
	objtool,x86: Replace alternatives with .retpoline_sites
	objtool: Introduce CFI hash
	x86/retpoline: Remove unused replacement symbols
	x86/asm: Fix register order
	x86/asm: Fixup odd GEN-for-each-reg.h usage
	x86/retpoline: Move the retpoline thunk declarations to nospec-branch.h
	x86/retpoline: Create a retpoline thunk array
	x86/alternative: Implement .retpoline_sites support
	x86/alternative: Handle Jcc __x86_indirect_thunk_\reg
	x86/alternative: Try inline spectre_v2=retpoline,amd
	x86/alternative: Add debug prints to apply_retpolines()
	bpf,x86: Simplify computing label offsets
	bpf,x86: Respect X86_FEATURE_RETPOLINE*
	objtool: Default ignore INT3 for unreachable
	x86/entry: Remove skip_r11rcx
	x86/realmode: build with -D__DISABLE_EXPORTS
	x86/kvm/vmx: Make noinstr clean
	x86/cpufeatures: Move RETPOLINE flags to word 11
	x86/retpoline: Cleanup some #ifdefery
	x86/retpoline: Swizzle retpoline thunk
	x86/retpoline: Use -mfunction-return
	x86: Undo return-thunk damage
	x86,objtool: Create .return_sites
	objtool: skip non-text sections when adding return-thunk sites
	x86,static_call: Use alternative RET encoding
	x86/ftrace: Use alternative RET encoding
	x86/bpf: Use alternative RET encoding
	x86/kvm: Fix SETcc emulation for return thunks
	x86/vsyscall_emu/64: Don't use RET in vsyscall emulation
	x86/sev: Avoid using __x86_return_thunk
	x86: Use return-thunk in asm code
	x86/entry: Avoid very early RET
	objtool: Treat .text.__x86.* as noinstr
	x86: Add magic AMD return-thunk
	x86/bugs: Report AMD retbleed vulnerability
	x86/bugs: Add AMD retbleed= boot parameter
	x86/bugs: Enable STIBP for JMP2RET
	x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value
	x86/entry: Add kernel IBRS implementation
	x86/bugs: Optimize SPEC_CTRL MSR writes
	x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS
	x86/bugs: Split spectre_v2_select_mitigation() and spectre_v2_user_select_mitigation()
	x86/bugs: Report Intel retbleed vulnerability
	intel_idle: Disable IBRS during long idle
	objtool: Update Retpoline validation
	x86/xen: Rename SYS* entry points
	x86/xen: Add UNTRAIN_RET
	x86/bugs: Add retbleed=ibpb
	x86/bugs: Do IBPB fallback check only once
	objtool: Add entry UNRET validation
	x86/cpu/amd: Add Spectral Chicken
	x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n
	x86/speculation: Fix firmware entry SPEC_CTRL handling
	x86/speculation: Fix SPEC_CTRL write on SMT state change
	x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit
	x86/speculation: Remove x86_spec_ctrl_mask
	objtool: Re-add UNWIND_HINT_{SAVE_RESTORE}
	KVM: VMX: Flatten __vmx_vcpu_run()
	KVM: VMX: Convert launched argument to flags
	KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS
	KVM: VMX: Fix IBRS handling after vmexit
	x86/speculation: Fill RSB on vmexit for IBRS
	x86/common: Stamp out the stepping madness
	x86/cpu/amd: Enumerate BTC_NO
	x86/retbleed: Add fine grained Kconfig knobs
	x86/bugs: Add Cannon lake to RETBleed affected CPU list
	x86/entry: Move PUSH_AND_CLEAR_REGS() back into error_entry
	x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported
	x86/kexec: Disable RET on kexec
	x86/speculation: Disable RRSBA behavior
	x86/static_call: Serialize __static_call_fixup() properly
	x86/xen: Fix initialisation in hypercall_page after rethunk
	x86/asm/32: Fix ANNOTATE_UNRET_SAFE use on 32-bit
	x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current
	efi/x86: use naked RET on mixed mode call wrapper
	x86/kvm: fix FASTOP_SIZE when return thunks are enabled
	KVM: emulate: do not adjust size of fastop and setcc subroutines
	tools arch x86: Sync the msr-index.h copy with the kernel sources
	tools headers cpufeatures: Sync with the kernel sources
	x86/bugs: Remove apostrophe typo
	um: Add missing apply_returns()
	x86: Use -mindirect-branch-cs-prefix for RETPOLINE builds
	Linux 5.15.57

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I7d0a3c3eb4be1e5401c2678fdb6229523486146f
2022-07-23 13:51:05 +02:00
Peter Zijlstra
fd17a42549 x86/bugs: Add retbleed=ibpb
commit 3ebc170068885b6fc7bedda6c667bb2c4d533159 upstream.

jmp2ret mitigates the easy-to-attack case at relatively low overhead.
It mitigates the long speculation windows after a mispredicted RET, but
it does not mitigate the short speculation window from arbitrary
instruction boundaries.

On Zen2, there is a chicken bit which needs setting, which mitigates
"arbitrary instruction boundaries" down to just "basic block boundaries".

But there is no fix for the short speculation window on basic block
boundaries, other than to flush the entire BTB to evict all attacker
predictions.

On the spectrum of "fast & blurry" -> "safe", there is (on top of STIBP
or no-SMT):

  1) Nothing		System wide open
  2) jmp2ret		May stop a script kiddy
  3) jmp2ret+chickenbit  Raises the bar rather further
  4) IBPB		Only thing which can count as "safe".

Tentative numbers put IBPB-on-entry at a 2.5x hit on Zen2, and a 10x hit
on Zen1 according to lmbench.

  [ bp: Fixup feature bit comments, document option, 32-bit build fix. ]

Suggested-by: Andrew Cooper <Andrew.Cooper3@citrix.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-23 12:54:05 +02:00
Pawan Gupta
347d0bf6b0 x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS
commit 7c693f54c873691a4b7da05c7e0f74e67745d144 upstream.

Extend spectre_v2= boot option with Kernel IBRS.

  [jpoimboe: no STIBP with IBRS]

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-23 12:54:03 +02:00
Kim Phillips
b4e05ea71e x86/bugs: Enable STIBP for JMP2RET
commit e8ec1b6e08a2102d8755ccb06fa26d540f26a2fa upstream.

For untrained return thunks to be fully effective, STIBP must be enabled
or SMT disabled.

Co-developed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-23 12:54:02 +02:00
Alexandre Chartre
89eba42632 x86/bugs: Add AMD retbleed= boot parameter
commit 7fbf47c7ce50b38a64576b150e7011ae73d54669 upstream.

Add the "retbleed=<value>" boot parameter to select a mitigation for
RETBleed. Possible values are "off", "auto" and "unret"
(JMP2RET mitigation). The default value is "auto".

Currently, "retbleed=auto" will select the unret mitigation on
AMD and Hygon and no mitigation on Intel (JMP2RET is not effective on
Intel).

  [peterz: rebase; add hygon]
  [jpoimboe: cleanups]

Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-23 12:54:02 +02:00
Srinivasarao Pathipati
031e91e83d FROMLIST: arm64: perf: Make exporting of pmu events configurable
The PMU export bit (PMCR_EL0.X) is getting reset during pmu reset,
Make is configurable using sysctls to enable/disable at runtime.
It can also be enabled at early bootup with kernel arguments.

Bug: 230559577
Change-Id: I35dcfeed23e64ec9493f9a15dbb43e9966108664
Link: https://lore.kernel.org/lkml/1653306574-20946-1-git-send-email-quic_c_spathi@quicinc.com/
Signed-off-by: Srinivasarao Pathipati <quic_spathi@quicinc.com>
2022-07-19 03:52:39 +00:00
Rob Herring
0211bf43ce UPSTREAM: arm64: perf: Add userspace counter access disable switch
Like x86, some users may want to disable userspace PMU counter
altogether. Add a sysctl 'perf_user_access' file to control userspace
counter access. The default is '0' which is disabled. Writing '1'
enables access.

Note that x86 supports globally enabling user access by writing '2' to
/sys/bus/event_source/devices/cpu/rdpmc. As there's not existing
userspace support to worry about, this shouldn't be necessary for Arm.
It could be added later if the need arises.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-perf-users@vger.kernel.org
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211208201124.310740-4-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

Bug: 230559577
(cherry picked from commit e2012600810c9ded81f6f63a8d04781be3c300ad)
Change-Id: Iea14f96122992944e1d97b9f6f6f821d54c1def1
Signed-off-by: Srinivasarao Pathipati <quic_spathi@quicinc.com>
2022-07-19 03:52:38 +00:00
Greg Kroah-Hartman
2e0e8a7b8c Merge 5.15.48 into android14-5.15
Changes in 5.15.48
	Documentation: Add documentation for Processor MMIO Stale Data
	x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug
	x86/speculation: Add a common function for MD_CLEAR mitigation update
	x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data
	x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations
	x86/speculation/mmio: Enable CPU Fill buffer clearing on idle
	x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data
	x86/speculation/srbds: Update SRBDS mitigation selection
	x86/speculation/mmio: Reuse SRBDS mitigation for SBDS
	KVM: x86/speculation: Disable Fill buffer clear within guests
	x86/speculation/mmio: Print SMT warning
	Linux 5.15.48

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Idb9b863febed6fc504dc04175d8ddf76acef3a6f
2022-07-13 11:56:18 +02:00
Dom Cobley
a587b2ea44 Merge remote-tracking branch 'stable/linux-5.15.y' into rpi-5.15.y 2022-06-17 18:59:57 +01:00
Pawan Gupta
d74f4eb1dd x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data
commit 8cb861e9e3c9a55099ad3d08e1a3b653d29c33ca upstream

Processor MMIO Stale Data is a class of vulnerabilities that may
expose data after an MMIO operation. For details please refer to
Documentation/admin-guide/hw-vuln/processor_mmio_stale_data.rst.

These vulnerabilities are broadly categorized as:

Device Register Partial Write (DRPW):
  Some endpoint MMIO registers incorrectly handle writes that are
  smaller than the register size. Instead of aborting the write or only
  copying the correct subset of bytes (for example, 2 bytes for a 2-byte
  write), more bytes than specified by the write transaction may be
  written to the register. On some processors, this may expose stale
  data from the fill buffers of the core that created the write
  transaction.

Shared Buffers Data Sampling (SBDS):
  After propagators may have moved data around the uncore and copied
  stale data into client core fill buffers, processors affected by MFBDS
  can leak data from the fill buffer.

Shared Buffers Data Read (SBDR):
  It is similar to Shared Buffer Data Sampling (SBDS) except that the
  data is directly read into the architectural software-visible state.

An attacker can use these vulnerabilities to extract data from CPU fill
buffers using MDS and TAA methods. Mitigate it by clearing the CPU fill
buffers using the VERW instruction before returning to a user or a
guest.

On CPUs not affected by MDS and TAA, user application cannot sample data
from CPU fill buffers using MDS or TAA. A guest with MMIO access can
still use DRPW or SBDR to extract data architecturally. Mitigate it with
VERW instruction to clear fill buffers before VMENTER for MMIO capable
guests.

Add a kernel parameter mmio_stale_data={off|full|full,nosmt} to control
the mitigation.

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-16 13:30:33 +02:00
Pawan Gupta
1fcc3d646f Documentation: Add documentation for Processor MMIO Stale Data
commit 4419470191386456e0b8ed4eb06a70b0021798a6 upstream

Add the admin guide for Processor MMIO stale data vulnerabilities.

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-16 13:30:32 +02:00
Greg Kroah-Hartman
28f0c67d40 Merge 5.15.44 into android14-5.15
Changes in 5.15.44
	HID: amd_sfh: Add support for sensor discovery
	KVM: x86/mmu: fix NULL pointer dereference on guest INVPCID
	ice: fix crash at allocation failure
	ACPI: sysfs: Fix BERT error region memory mapping
	MAINTAINERS: co-maintain random.c
	MAINTAINERS: add git tree for random.c
	lib/crypto: blake2s: include as built-in
	lib/crypto: blake2s: move hmac construction into wireguard
	lib/crypto: sha1: re-roll loops to reduce code size
	lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI
	random: document add_hwgenerator_randomness() with other input functions
	random: remove unused irq_flags argument from add_interrupt_randomness()
	random: use BLAKE2s instead of SHA1 in extraction
	random: do not sign extend bytes for rotation when mixing
	random: do not re-init if crng_reseed completes before primary init
	random: mix bootloader randomness into pool
	random: harmonize "crng init done" messages
	random: use IS_ENABLED(CONFIG_NUMA) instead of ifdefs
	random: early initialization of ChaCha constants
	random: avoid superfluous call to RDRAND in CRNG extraction
	random: don't reset crng_init_cnt on urandom_read()
	random: fix typo in comments
	random: cleanup poolinfo abstraction
	random: cleanup integer types
	random: remove incomplete last_data logic
	random: remove unused extract_entropy() reserved argument
	random: rather than entropy_store abstraction, use global
	random: remove unused OUTPUT_POOL constants
	random: de-duplicate INPUT_POOL constants
	random: prepend remaining pool constants with POOL_
	random: cleanup fractional entropy shift constants
	random: access input_pool_data directly rather than through pointer
	random: selectively clang-format where it makes sense
	random: simplify arithmetic function flow in account()
	random: continually use hwgenerator randomness
	random: access primary_pool directly rather than through pointer
	random: only call crng_finalize_init() for primary_crng
	random: use computational hash for entropy extraction
	random: simplify entropy debiting
	random: use linear min-entropy accumulation crediting
	random: always wake up entropy writers after extraction
	random: make credit_entropy_bits() always safe
	random: remove use_input_pool parameter from crng_reseed()
	random: remove batched entropy locking
	random: fix locking in crng_fast_load()
	random: use RDSEED instead of RDRAND in entropy extraction
	random: get rid of secondary crngs
	random: inline leaves of rand_initialize()
	random: ensure early RDSEED goes through mixer on init
	random: do not xor RDRAND when writing into /dev/random
	random: absorb fast pool into input pool after fast load
	random: use simpler fast key erasure flow on per-cpu keys
	random: use hash function for crng_slow_load()
	random: make more consistent use of integer types
	random: remove outdated INT_MAX >> 6 check in urandom_read()
	random: zero buffer after reading entropy from userspace
	random: fix locking for crng_init in crng_reseed()
	random: tie batched entropy generation to base_crng generation
	random: remove ifdef'd out interrupt bench
	random: remove unused tracepoints
	random: add proper SPDX header
	random: deobfuscate irq u32/u64 contributions
	random: introduce drain_entropy() helper to declutter crng_reseed()
	random: remove useless header comment
	random: remove whitespace and reorder includes
	random: group initialization wait functions
	random: group crng functions
	random: group entropy extraction functions
	random: group entropy collection functions
	random: group userspace read/write functions
	random: group sysctl functions
	random: rewrite header introductory comment
	random: defer fast pool mixing to worker
	random: do not take pool spinlock at boot
	random: unify early init crng load accounting
	random: check for crng_init == 0 in add_device_randomness()
	random: pull add_hwgenerator_randomness() declaration into random.h
	random: clear fast pool, crng, and batches in cpuhp bring up
	random: round-robin registers as ulong, not u32
	random: only wake up writers after zap if threshold was passed
	random: cleanup UUID handling
	random: unify cycles_t and jiffies usage and types
	random: do crng pre-init loading in worker rather than irq
	random: give sysctl_random_min_urandom_seed a more sensible value
	random: don't let 644 read-only sysctls be written to
	random: replace custom notifier chain with standard one
	random: use SipHash as interrupt entropy accumulator
	random: make consistent usage of crng_ready()
	random: reseed more often immediately after booting
	random: check for signal and try earlier when generating entropy
	random: skip fast_init if hwrng provides large chunk of entropy
	random: treat bootloader trust toggle the same way as cpu trust toggle
	random: re-add removed comment about get_random_{u32,u64} reseeding
	random: mix build-time latent entropy into pool at init
	random: do not split fast init input in add_hwgenerator_randomness()
	random: do not allow user to keep crng key around on stack
	random: check for signal_pending() outside of need_resched() check
	random: check for signals every PAGE_SIZE chunk of /dev/[u]random
	random: allow partial reads if later user copies fail
	random: make random_get_entropy() return an unsigned long
	random: document crng_fast_key_erasure() destination possibility
	random: fix sysctl documentation nits
	init: call time_init() before rand_initialize()
	ia64: define get_cycles macro for arch-override
	s390: define get_cycles macro for arch-override
	parisc: define get_cycles macro for arch-override
	alpha: define get_cycles macro for arch-override
	powerpc: define get_cycles macro for arch-override
	timekeeping: Add raw clock fallback for random_get_entropy()
	m68k: use fallback for random_get_entropy() instead of zero
	riscv: use fallback for random_get_entropy() instead of zero
	mips: use fallback for random_get_entropy() instead of just c0 random
	arm: use fallback for random_get_entropy() instead of zero
	nios2: use fallback for random_get_entropy() instead of zero
	x86/tsc: Use fallback for random_get_entropy() instead of zero
	um: use fallback for random_get_entropy() instead of zero
	sparc: use fallback for random_get_entropy() instead of zero
	xtensa: use fallback for random_get_entropy() instead of zero
	random: insist on random_get_entropy() existing in order to simplify
	random: do not use batches when !crng_ready()
	random: use first 128 bits of input as fast init
	random: do not pretend to handle premature next security model
	random: order timer entropy functions below interrupt functions
	random: do not use input pool from hard IRQs
	random: help compiler out with fast_mix() by using simpler arguments
	siphash: use one source of truth for siphash permutations
	random: use symbolic constants for crng_init states
	random: avoid initializing twice in credit race
	random: move initialization out of reseeding hot path
	random: remove ratelimiting for in-kernel unseeded randomness
	random: use proper jiffies comparison macro
	random: handle latent entropy and command line from random_init()
	random: credit architectural init the exact amount
	random: use static branch for crng_ready()
	random: remove extern from functions in header
	random: use proper return types on get_random_{int,long}_wait()
	random: make consistent use of buf and len
	random: move initialization functions out of hot pages
	random: move randomize_page() into mm where it belongs
	random: unify batched entropy implementations
	random: convert to using fops->read_iter()
	random: convert to using fops->write_iter()
	random: wire up fops->splice_{read,write}_iter()
	random: check for signals after page of pool writes
	ALSA: ctxfi: Add SB046x PCI ID
	Linux 5.15.44

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I2d874cba14f13379fc5f874e72634c9179b28742
2022-06-14 11:49:05 +02:00
Dom Cobley
ea7fe1b21e Merge remote-tracking branch 'stable/linux-5.15.y' into rpi-5.15.y 2022-06-01 13:12:34 +01:00
Jason A. Donenfeld
2814a9e632 random: fix sysctl documentation nits
commit 069c4ea6871c18bd368f27756e0f91ffb524a788 upstream.

A semicolon was missing, and the almost-alphabetical-but-not ordering
was confusing, so regroup these by category instead.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-30 09:29:12 +02:00
Jason A. Donenfeld
25727cbbe9 random: treat bootloader trust toggle the same way as cpu trust toggle
commit d97c68d178fbf8aaaf21b69b446f2dfb13909316 upstream.

If CONFIG_RANDOM_TRUST_CPU is set, the RNG initializes using RDRAND.
But, the user can disable (or enable) this behavior by setting
`random.trust_cpu=0/1` on the kernel command line. This allows system
builders to do reasonable things while avoiding howls from tinfoil
hatters. (Or vice versa.)

CONFIG_RANDOM_TRUST_BOOTLOADER is basically the same thing, but regards
the seed passed via EFI or device tree, which might come from RDRAND or
a TPM or somewhere else. In order to allow distros to more easily enable
this while avoiding those same howls (or vice versa), this commit adds
the corresponding `random.trust_bootloader=0/1` toggle.

Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Graham Christensen <graham@grahamc.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Link: https://github.com/NixOS/nixpkgs/pull/165355
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-30 09:29:11 +02:00
Jason A. Donenfeld
4509941f75 random: remove ifdef'd out interrupt bench
commit 95e6060c20a7f5db60163274c5222a725ac118f9 upstream.

With tools like kbench9000 giving more finegrained responses, and this
basically never having been used ever since it was initially added,
let's just get rid of this. There *is* still work to be done on the
interrupt handler, but this really isn't the way it's being developed.

Cc: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-30 09:29:06 +02:00