Re: [PATCH 2/2] signal: don't allow STOP on PF_IO_WORKER threads
From: Oleg Nesterov <oleg@redhat.com>
Date: 2021-03-22 16:16:40
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On 03/20, Jens Axboe wrote:
quoted hunk ↗ jump to hunk
--- a/kernel/signal.c +++ b/kernel/signal.c@@ -2349,6 +2349,10 @@ static bool do_signal_stop(int signr) t = current; while_each_thread(current, t) { + /* don't STOP PF_IO_WORKER threads */ + if (t->flags & PF_IO_WORKER) + continue; +
This is not enough. At least task_join_group_stop() should check PF_IO_WORKER too. Oleg.