[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>
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index f70a47e..841f0bd 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -2734,7 +2734,7 @@
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;
}
}