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Merge tag 'interrupting_kthread_stop-for-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

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Pull kthread update from Eric Biederman:
 "Break out of wait loops on kthread_stop()

  This is a small tweak to kthread_stop so it breaks out of
  interruptible waits, that don't explicitly test for kthread_stop.

  These interruptible waits occassionaly occur in kernel threads do to
  code sharing"

* tag 'interrupting_kthread_stop-for-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  signal: break out of wait loops on kthread_stop()
This commit is contained in:
Linus Torvalds
2022-10-09 16:01:59 -07:00
parent 4899a36f91 a7c01fa93a
commit c71370bde7
1 changed files with 1 additions and 0 deletions
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1
kernel/kthread.c
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@@ -704,6 +704,7 @@ int kthread_stop(struct task_struct *k)
kthread = to_kthread(k);
set_bit(KTHREAD_SHOULD_STOP, &kthread->flags);
kthread_unpark(k);
set_tsk_thread_flag(k, TIF_NOTIFY_SIGNAL);
wake_up_process(k);
wait_for_completion(&kthread->exited);
ret = kthread->result;