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Qais Yousef cd65f53a58 ANDROID: sched/uclamp: Don't enable uclamp_is_used static key by in-kernel requests 
We do have now in-kernel users of uclamp to implement inheritance. The
static_branch_enable() path unconditionally holds the cpus_read_lock()
which might_sleep(). The path in binder that implements inheritance
happens from in_atomic() context which leads to a splat like this one:

	[  147.529960] BUG: sleeping function called from invalid context at include/linux/percpu-rwsem.h:56
	[  147.530196] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2586, name: RenderThread
	[  147.530410] INFO: lockdep is turned off.
	[  147.530518] Preemption disabled at:
	[  147.530521] [<ffffffc008ca2cec>] binder_proc_transaction+0x78/0x41c
	[  147.530793] CPU: 8 PID: 2586 Comm: RenderThread Tainted: G S      W  O      5.15.76-android14-5-00086-gc01afe5d262f #1
	[  147.531214] Call trace:
	[  147.531288] dump_backtrace+0xe8/0x134
	[  147.531444] show_stack+0x1c/0x4c
	[  147.531598] dump_stack_lvl+0x74/0x94
	[  147.531766] dump_stack+0x14/0x3c
	[  147.531920] ___might_sleep+0x210/0x230
	[  147.532094] __might_sleep+0x54/0x84
	[  147.532259] cpus_read_lock+0x2c/0x160
	[  147.532429] static_key_enable+0x1c/0x34
	[  147.532608] __sched_setscheduler+0x2a8/0x99c
	[  147.532802] sched_setattr_nocheck+0x1c/0x24
	[  147.532994] binder_do_set_priority+0x31c/0x4a4
	[  147.533195] binder_transaction_priority+0x200/0x3f4
	[  147.533413] binder_proc_transaction+0x220/0x41c
	[  147.533618] binder_transaction+0x1df0/0x234c
	[  147.533812] binder_thread_write+0xd84/0x2398
	[  147.534007] binder_ioctl_write_read+0x19c/0xb28
	[  147.534212] binder_ioctl+0x344/0x1a3c
	[  147.534382] __arm64_sys_ioctl+0x94/0xc8
	[  147.534561] invoke_syscall+0x44/0xf8
	[  147.534729] el0_svc_common+0xc8/0x10c
	[  147.534900] do_el0_svc+0x20/0x28
	[  147.535053] el0_svc+0x58/0xe0
	[  147.535198] el0t_64_sync_handler+0x7c/0xe4
	[  147.535386] el0t_64_sync+0x188/0x18c

Prevent enabling the lock for !user initiated sched_setattr()
operations. Generally we don't expect in-kernel uclamp users.

Bug: 259145692
Signed-off-by: Qais Yousef <qyousef@google.com>
Change-Id: Iac5be139b5ffd39f5e1c0431ce253133d81b98cf
2022-12-05 20:29:35 +00:00
..
bpf
Merge 5.15.80 into android14-5.15
2022-11-28 16:08:50 +00:00
cgroup
BACKPORT: mm: multi-gen LRU: kill switch
2022-11-30 00:28:11 +00:00
configs
…
debug
lockdown: also lock down previous kgdb use
2022-05-25 09:57:37 +02:00
dma
Merge 5.15.72 into android14-5.15
2022-10-05 11:59:55 +02:00
entry
lockdep: Fix -Wunused-parameter for _THIS_IP_
2022-09-20 12:39:42 +02:00
events
Merge 5.15.80 into android14-5.15
2022-11-28 16:08:50 +00:00
gcov
gcov: clang: fix the buffer overflow issue
2022-12-02 17:41:09 +01:00
irq
Merge 5.15.81 into android14-5.15
2022-12-04 12:02:10 +00:00
kcsan
Merge tag 'locking-debug-2021-09-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2021-09-02 13:00:15 -07:00
livepatch
livepatch: fix race between fork and KLP transition
2022-10-26 12:34:30 +02:00
locking
Merge 5.15.69 into android14-5.15
2022-09-24 14:14:08 +02:00
power
Merge 5.15.77 into android14-5.15
2022-11-15 12:48:44 +00:00
printk
Merge 5.15.46 into android14-5.15
2022-07-13 11:40:42 +02:00
rcu
Merge 5.15.75 into android14-5.15
2022-11-02 08:51:19 +01:00
sched
ANDROID: sched/uclamp: Don't enable uclamp_is_used static key by in-kernel requests
2022-12-05 20:29:35 +00:00
time
Merge 5.15.61 into android14-5.15
2022-09-21 17:30:12 +02:00
trace
Merge 5.15.80 into android14-5.15
2022-11-28 16:08:50 +00:00
.gitignore
ANDROID: add gki_module headers to .gitignore file
2022-04-27 15:34:29 +00:00
acct.c
kernel/acct.c: use dedicated helper to access rlimit values
2021-09-08 11:50:26 -07:00
async.c
Revert "module, async: async_synchronize_full() on module init iff async is used"
2022-02-23 12:03:07 +01:00
audit_fsnotify.c
audit: fix potential double free on error path from fsnotify_add_inode_mark
2022-08-31 17:16:33 +02:00
audit_tree.c
audit: move put_tree() to avoid trim_trees refcount underflow and UAF
2021-08-24 18:52:36 -04:00
audit_watch.c
…
audit.c
audit: improve audit queue handling when "audit=1" on cmdline
2022-02-08 18:34:03 +01:00
audit.h
audit: log AUDIT_TIME_* records only from rules
2022-04-08 14:23:06 +02:00
auditfilter.c
…
auditsc.c
audit: log AUDIT_TIME_* records only from rules
2022-04-08 14:23:06 +02:00
backtracetest.c
…
bounds.c
BACKPORT: mm: multi-gen LRU: minimal implementation
2022-11-30 00:28:11 +00:00
capability.c
…
cfi.c
FROMLIST: cfi: free old cfi shadow asynchronously
2022-11-14 22:32:51 +00:00
compat.c
arch: remove compat_alloc_user_space
2021-09-08 15:32:35 -07:00
configs.c
…
context_tracking.c
…
cpu_pm.c
PM: cpu: Make notifier chain use a raw_spinlock_t
2021-08-16 18:55:32 +02:00
cpu.c
Merge 5.15.44 into android14-5.15
2022-06-14 11:49:05 +02:00
crash_core.c
kernel/crash_core: suppress unknown crashkernel parameter warning
2021-12-29 12:28:49 +01:00
crash_dump.c
…
cred.c
Merge 5.15.25 into android13-5.15
2022-02-23 12:30:26 +01:00
delayacct.c
…
dma.c
…
exec_domain.c
…
exit.c
BACKPORT: mm: multi-gen LRU: support page table walks
2022-11-30 00:28:11 +00:00
extable.c
…
fail_function.c
…
fork.c
BACKPORT: mm: multi-gen LRU: support page table walks
2022-11-30 00:28:11 +00:00
freezer.c
FROMLIST: sched: Defer wakeup in ttwu() for unschedulable frozen tasks
2022-02-10 09:29:57 +00:00
futex.c
Merge tag 'v5.15-rc1' into android-mainline
2021-09-16 09:51:19 +02:00
gen_kheaders.sh
UPSTREAM: kheaders: Have cpio unconditionally replace files
2022-07-14 22:20:19 +00:00
gki_module.c
ANDROID: GKI: Handle no ABI symbol list for modules
2022-12-01 00:22:47 +00:00
groups.c
…
hung_task.c
FROMLIST: freezer: Add frozen_or_skipped() helper function
2022-02-10 09:29:34 +00:00
iomem.c
…
irq_work.c
…
jump_label.c
…
kallsyms.c
…
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
locking/rwlock: Provide RT variant
2021-08-17 17:50:51 +02:00
Kconfig.preempt
…
kcov.c
…
kexec_core.c
Merge branch 'rework/printk_safe-removal' into for-linus
2021-08-30 16:36:10 +02:00
kexec_elf.c
…
kexec_file.c
ima: force signature verification when CONFIG_KEXEC_SIG is configured
2022-07-21 21:24:29 +02:00
kexec_internal.h
…
kexec.c
kexec: avoid compat_alloc_user_space
2021-09-08 15:32:34 -07:00
kheaders.c
…
kmod.c
…
kprobes.c
kprobes: Skip clearing aggrprobe's post_handler in kprobe-on-ftrace case
2022-11-26 09:24:50 +01:00
ksysfs.c
…
kthread.c
…
latencytop.c
…
Makefile
FROMLIST: cfi: enable sanitize for cfi.c
2022-11-14 22:32:51 +00:00
module_signature.c
…
module_signing.c
…
module-internal.h
ANDROID: GKI: Add module load time symbol protection
2022-09-30 17:41:39 +00:00
module.c
ANDROID: GKI: Add module load time symbol protection
2022-09-30 17:41:39 +00:00
notifier.c
notifier: Remove atomic_notifier_call_chain_robust()
2021-08-16 18:55:32 +02:00
nsproxy.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
padata.c
padata: Remove repeated verbose license text
2021-08-27 16:30:18 +08:00
panic.c
Merge branch 'rework/printk_safe-removal' into for-linus
2021-08-30 16:36:10 +02:00
params.c
…
pid_namespace.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
pid.c
Merge 4520dcbe0d ("Merge tag 'for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply") into android-mainline
2021-09-02 09:42:36 +02:00
profile.c
profiling: fix shift too large makes kernel panic
2022-08-17 14:24:04 +02:00
ptrace.c
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-09 10:22:29 +02:00
range.c
…
reboot.c
ANDROID: reboot: Export reboot_mode
2021-09-28 08:49:54 -07:00
regset.c
…
relay.c
…
resource_kunit.c
…
resource.c
kernel/resource: fix kfree() of bootmem memory again
2022-04-08 14:23:43 +02:00
rseq.c
rseq: Remove broken uapi field layout on 32-bit little endian
2022-04-08 14:23:10 +02:00
scftorture.c
scftorture: Fix distribution of short handler delays
2022-06-09 10:22:46 +02:00
scs.c
FROMLIST: kasan, scs: support tagged vmalloc mappings
2022-03-21 15:31:19 +00:00
seccomp.c
seccomp: Invalidate seccomp mode to catch death failures
2022-02-16 12:56:38 +01:00
signal.c
Merge 5.15.56 into android14-5.15
2022-07-22 17:43:50 +02:00
smp.c
locking/csd_lock: Change csdlock_debug from early_param to __setup
2022-08-17 14:24:24 +02:00
smpboot.c
…
smpboot.h
…
softirq.c
ANDROID: softirq: Export irq_handler_exit tracepoint
2021-11-11 18:55:19 +00:00
stackleak.c
gcc-plugins/stackleak: Use noinstr in favor of notrace
2022-02-23 12:03:07 +01:00
stacktrace.c
Merge 5.15.34 into android13-5.15
2022-04-24 16:57:32 +02:00
static_call_inline.c
static_call: Don't make __static_call_return0 static
2022-04-13 20:59:28 +02:00
static_call.c
static_call: Don't make __static_call_return0 static
2022-04-13 20:59:28 +02:00
stop_machine.c
ANDROID: sched: allow access to critical common code for CPU Pause
2021-11-09 00:42:10 +00:00
sys_ni.c
kernel/sys_ni: add compat entry for fadvise64_64
2022-08-31 17:16:33 +02:00
sys.c
UPSTREAM: arm64/sme: Implement vector length configuration prctl()s
2022-08-10 08:58:11 +01:00
sysctl-test.c
…
sysctl.c
Merge 5.15.58 into android14-5.15
2022-08-02 08:37:15 +02:00
task_work.c
…
taskstats.c
…
test_kprobes.c
…
torture.c
…
tracepoint.c
Merge 996fe06160 ("Merge tag 'kgdb-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux") into android-mainline
2021-09-14 16:16:54 +02:00
tsacct.c
taskstats: Cleanup the use of task->exit_code
2022-01-27 11:05:35 +01:00
ucount.c
ucounts: Handle wrapping in is_ucounts_overlimit
2022-02-23 12:03:20 +01:00
uid16.c
…
uid16.h
…
umh.c
Revert "ANDROID: umh: Enable usermode helper for required use cases"
2022-07-19 03:54:51 +00:00
up.c
…
user_namespace.c
ucounts: Fix systemd LimitNPROC with private users regression
2022-03-08 19:12:42 +01:00
user-return-notifier.c
…
user.c
fs/epoll: use a per-cpu counter for user's watches count
2021-09-08 11:50:27 -07:00
usermode_driver.c
…
utsname_sysctl.c
…
utsname.c
…
watch_queue.c
watch_queue: Fix missing locking in add_watch_to_object()
2022-08-03 12:03:43 +02:00
watchdog_hld.c
…
watchdog.c
Merge 5.15.63 into android14-5.15
2022-09-24 10:01:09 +02:00
workqueue_internal.h
workqueue: Assign a color to barrier work items
2021-08-17 07:49:10 -10:00
workqueue.c
Merge 5.15.71 into android14-5.15
2022-09-28 13:32:32 +02:00