Commit 0c320f77 authored by Al Viro's avatar Al Viro
Browse files

reverse_path_check_proc(): don't bother with cookies 



We know there's no loops by the time we call it; the
only thing we care about is too deep reverse paths.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent aebf15f0

fs/eventpoll.c

+1 −2
Original line number Diff line number Diff line
@@ -1311,7 +1311,7 @@ static int reverse_path_check_proc(struct file *file, int depth) 
	int error = 0;

	struct epitem *epi;



	if (!ep_push_nested(file)) /* limits recursion */

	if (depth > EP_MAX_NESTS) /* too deep nesting */

		return -1;



	/* CTL_DEL can remove links here, but that can't increase our count */
@@ -1336,7 +1336,6 @@ static int reverse_path_check_proc(struct file *file, int depth) 
		}

	}

	rcu_read_unlock();

	nesting--; /* pop */

	return error;

}