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e08d007f9d
John reported that stress-ng-yield could make his machine unhappy and managed to bisect it to commitb3d99f43c7("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:af4cf40470("sched/fair: Add cfs_rq::avg_vruntime") Fixes:b3d99f43c7("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
1391 lines
34 KiB
1391 lines
34 KiB