Suren Baghdasaryan e61c236dcf sched/psi: Fix OOB write when writing 0 bytes to PSI files ...

commit 6fcca0fa48 upstream.

Issuing write() with count parameter set to 0 on any file under
/proc/pressure/ will cause an OOB write because of the access to
buf[buf_size-1] when NUL-termination is performed. Fix this by checking
for buf_size to be non-zero.

Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: https://lkml.kernel.org/r/20200203212216.7076-1-surenb@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-02-28 17:22:21 +01:00

..

autogroup.c

sched/autogroup: Make autogroup_path() always available

2019-06-24 19:23:40 +02:00

autogroup.h

…

clock.c

treewide: Add SPDX license identifier for missed files

2019-05-21 10:50:45 +02:00

completion.c

…

core.c

sched/core: Fix size of rq::uclamp initialization

2020-02-24 08:36:51 +01:00

cpuacct.c

…

cpudeadline.c

Merge tag 'v5.2-rc5' into sched/core, to pick up fixes

2019-06-17 12:12:27 +02:00

cpudeadline.h

…

cpufreq_schedutil.c

cpufreq: Avoid leaving stale IRQ work items during CPU offline

2019-12-31 16:46:06 +01:00

cpufreq.c

cpufreq: Avoid leaving stale IRQ work items during CPU offline

2019-12-31 16:46:06 +01:00

cpupri.c

Merge tag 'v5.2-rc5' into sched/core, to pick up fixes

2019-06-17 12:12:27 +02:00

cpupri.h

…

cputime.c

sched/vtime: Fix guest/system mis-accounting on task switch

2019-10-09 12:38:03 +02:00

deadline.c

sched/core: Further clarify sched_class::set_next_task()

2020-01-26 10:01:03 +01:00

debug.c

Merge tag 'v5.2-rc6' into sched/core, to refresh the branch

2019-06-24 19:19:53 +02:00

fair.c

sched/cpufreq: Move the cfs_rq_util_change() call to cpufreq_update_util()

2020-01-26 10:01:08 +01:00

features.h

sched/fair: Replace source_load() & target_load() with weighted_cpuload()

2019-06-03 11:49:39 +02:00

idle.c

sched/core: Further clarify sched_class::set_next_task()

2020-01-26 10:01:03 +01:00

isolation.c

sched/isolation: Prefer housekeeping CPU in local node

2019-07-25 15:51:55 +02:00

loadavg.c

sched: loadavg: make calc_load_n() public

2018-10-26 16:26:32 -07:00

Makefile

psi: pressure stall information for CPU, memory, and IO

2018-10-26 16:26:32 -07:00

membarrier.c

membarrier: Fix RCU locking bug caused by faulty merge

2019-10-01 21:27:50 +02:00

pelt.c

sched/debug: Add new tracepoint to track PELT at se level

2019-06-24 19:23:42 +02:00

pelt.h

sched/topology: Remove unused 'sd' parameter from arch_scale_cpu_capacity()

2019-06-24 19:23:39 +02:00

psi.c

sched/psi: Fix OOB write when writing 0 bytes to PSI files

2020-02-28 17:22:21 +01:00

rt.c

sched/core: Further clarify sched_class::set_next_task()

2020-01-26 10:01:03 +01:00

sched-pelt.h

sched/fair: Fix "runnable_avg_yN_inv" not used warnings

2019-06-17 12:15:58 +02:00

sched.h

sched/core: Further clarify sched_class::set_next_task()

2020-01-26 10:01:03 +01:00

stats.c

…

stats.h

sched/stats: Fix unlikely() use of sched_info_on()

2019-07-25 15:51:55 +02:00

stop_task.c

sched/core: Further clarify sched_class::set_next_task()

2020-01-26 10:01:03 +01:00

swait.c

kernel/sched/: remove caller signal_pending branch predictions

2019-01-04 13:13:48 -08:00

topology.c

sched/topology: Assert non-NUMA topology masks don't (partially) overlap

2020-02-24 08:36:52 +01:00

wait_bit.c

treewide: Add SPDX license identifier for missed files

2019-05-21 10:50:45 +02:00

wait.c

sched/wait: Deduplicate code with do-while

2019-06-24 19:23:40 +02:00