Commit 6fb8f43c authored by Jens Axboe's avatar Jens Axboe
Browse files

kernel: treat PF_IO_WORKER like PF_KTHREAD for ptrace/signals 



Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 4727dc20

kernel/ptrace.c

+1 −1
Original line number Diff line number Diff line
@@ -375,7 +375,7 @@ static int ptrace_attach(struct task_struct *task, long request, 
	audit_ptrace(task);



	retval = -EPERM;

	if (unlikely(task->flags & PF_KTHREAD))

	if (unlikely(task->flags & (PF_KTHREAD | PF_IO_WORKER)))

		goto out;

	if (same_thread_group(task, current))

		goto out;

kernel/signal.c

+2 −2
Original line number Diff line number Diff line
@@ -91,7 +91,7 @@ static bool sig_task_ignored(struct task_struct *t, int sig, bool force) 
		return true;



	/* Only allow kernel generated signals to this kthread */

	if (unlikely((t->flags & PF_KTHREAD) &&

	if (unlikely((t->flags & (PF_KTHREAD | PF_IO_WORKER)) &&

		     (handler == SIG_KTHREAD_KERNEL) && !force))

		return true;
@@ -1096,7 +1096,7 @@ static int __send_signal(int sig, struct kernel_siginfo *info, struct task_struc 
	/*

	 * Skip useless siginfo allocation for SIGKILL and kernel threads.

	 */

	if ((sig == SIGKILL) || (t->flags & PF_KTHREAD))

	if ((sig == SIGKILL) || (t->flags & (PF_KTHREAD | PF_IO_WORKER)))

		goto out_set;



	/*