Commit 66ae0d1e authored by Jens Axboe's avatar Jens Axboe
Browse files

kernel: allow fork with TIF_NOTIFY_SIGNAL pending 



fork() fails if signal_pending() is true, but there are two conditions
that can lead to that:

1) An actual signal is pending. We want fork to fail for that one, like
   we always have.

2) TIF_NOTIFY_SIGNAL is pending, because the task has pending task_work.
   We don't need to make it fail for that case.

Allow fork() to proceed if just task_work is pending, by changing the
signal_pending() check to task_sigpending().

Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent b69de288

kernel/fork.c

+1 −1
Original line number Diff line number Diff line
@@ -1941,7 +1941,7 @@ static __latent_entropy struct task_struct *copy_process( 
	recalc_sigpending();

	spin_unlock_irq(&current->sighand->siglock);

	retval = -ERESTARTNOINTR;

	if (signal_pending(current))

	if (task_sigpending(current))

		goto fork_out;



	retval = -ENOMEM;