sched: Fix migration_cpu_stop() WARN

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Oleksandr reported hitting the WARN in the 'task_rq(p) != rq' branch
of migration_cpu_stop(). Valentin noted that using cpu_of(rq) in that
case is just plain wrong to begin with, since per the earlier branch
that isn't the actual CPU of the task.

Replace both instances of is_cpu_allowed() by a direct p->cpus_mask
test using task_cpu().

Reported-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Debugged-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>

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Peter Zijlstra 2020-11-17 12:14:51 +01:00

parent d707faa64d

commit 1293771e43

1 changed files with 2 additions and 2 deletions

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kernel/sched/core.c

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