From 20ac94378de59d61dc39f10ed5530485e4ac8c07 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" <ebiederm@xmission.com> Date: Thu, 13 Apr 2006 04:49:07 -0600 Subject: [PATCH] [PATCH] do_SAK: Don't recursively take the tasklist_lock By calling send_sig do_SAK is recursively taking the tasklist_lock, which is silly. In addition I just audited the kernel and this was the only place where tasklist_lock is taken inside of task_lock. So this one line change is a general worthwhile cleanup and it increases our options on how to fix the ptrace_attach races. Signed-off-by: Linus Torvalds <torvalds@osdl.org> --- drivers/char/tty_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index f70a47eadb52a..841f0bd3eaaf8 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -2734,7 +2734,7 @@ static void __do_SAK(void *arg) printk(KERN_NOTICE "SAK: killed process %d" " (%s): fd#%d opened to the tty\n", p->pid, p->comm, i); - send_sig(SIGKILL, p, 1); + force_sig(SIGKILL, p); break; } } -- GitLab