diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2026-04-01 15:20:21 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-04-02 13:42:43 +0200 |
| commit | e08d007f9d813616ce7093600bc4fdb9c9d81d89 (patch) | |
| tree | 9a8cd50efc0639603f837ac662a2fd64ec081a2a /include/asm-arm/git@git.tavy.me:linux.git | |
| parent | 1319ea57529e131822bab56bf417c8edc2db9ae8 (diff) | |
sched/debug: Fix avg_vruntime() usage
John reported that stress-ng-yield could make his machine unhappy and
managed to bisect it to commit b3d99f43c72b ("sched/fair: Fix
zero_vruntime tracking").
The commit in question changes avg_vruntime() from a function that is
a pure reader, to a function that updates variables. This turns an
unlocked sched/debug usage of this function from a minor mistake into
a data corruptor.
Fixes: af4cf40470c2 ("sched/fair: Add cfs_rq::avg_vruntime")
Fixes: b3d99f43c72b ("sched/fair: Fix zero_vruntime tracking")
Reported-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Tested-by: John Stultz <jstultz@google.com>
Link: https://patch.msgid.link/20260401132355.196370805@infradead.org
Diffstat (limited to 'include/asm-arm/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions