diff options
| author | Song Liu <song@kernel.org> | 2022-02-03 16:40:57 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-16 12:51:47 +0100 |
| commit | 30d9f3cbe47e1018ddc8069ac5b5c9e66fbdf727 (patch) | |
| tree | 58de3ce987df304dab6fb8771528cd50e30b3fd5 /Kbuild | |
| parent | 48fe82f8a7fa7590740d74978c97e3549883a6f6 (diff) | |
| download | linux-30d9f3cbe47e1018ddc8069ac5b5c9e66fbdf727.tar.gz linux-30d9f3cbe47e1018ddc8069ac5b5c9e66fbdf727.tar.bz2 linux-30d9f3cbe47e1018ddc8069ac5b5c9e66fbdf727.zip | |
perf: Fix list corruption in perf_cgroup_switch()
commit 5f4e5ce638e6a490b976ade4a40017b40abb2da0 upstream.
There's list corruption on cgrp_cpuctx_list. This happens on the
following path:
perf_cgroup_switch: list_for_each_entry(cgrp_cpuctx_list)
cpu_ctx_sched_in
ctx_sched_in
ctx_pinned_sched_in
merge_sched_in
perf_cgroup_event_disable: remove the event from the list
Use list_for_each_entry_safe() to allow removing an entry during
iteration.
Fixes: 058fe1c0440e ("perf/core: Make cgroup switch visit only cpuctxs with cgroup events")
Signed-off-by: Song Liu <song@kernel.org>
Reviewed-by: Rik van Riel <riel@surriel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220204004057.2961252-1-song@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Kbuild')
0 files changed, 0 insertions, 0 deletions