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Peter Zijlstra
b1e8206582
Where commit4ef0c5c6b5("kernel/sched: Fix sched_fork() access an invalid sched_task_group") fixed a fork race vs cgroup, it opened up a race vs syscalls by not placing the task on the runqueue before it gets exposed through the pidhash. Commit13765de814("sched/fair: Fix fault in reweight_entity") is trying to fix a single instance of this, instead fix the whole class of issues, effectively reverting this commit. Fixes:4ef0c5c6b5("kernel/sched: Fix sched_fork() access an invalid sched_task_group") Reported-by: Linus Torvalds <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Tested-by: Tadeusz Struk <[email protected]> Tested-by: Zhang Qiao <[email protected]> Tested-by: Dietmar Eggemann <[email protected]> Link: https://lkml.kernel.org/r/[email protected]