cgroup_enable_task_cg_lists && PF_EXITING (Was: KCSAN: data-race in exit_signals / prepare_signal)

From: Oleg Nesterov
Date: Mon Oct 21 2019 - 10:21:27 EST

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could you explain the usage of siglock/PF_EXITING in
cgroup_enable_task_cg_lists() ?

PF_EXITING is protected by cgroup_threadgroup_rwsem, not by
sighand->siglock.

Oleg.

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In reply to: Christian Brauner: "Re: KCSAN: data-race in exit_signals / prepare_signal"
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