From cc299a98eb13a9853675a9cbb90b30b4011e1406 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Wed, 4 Jun 2014 16:05:43 -0700 Subject: [PATCH] fs/notify/fanotify/fanotify_user.c: fix FAN_MARK_FLUSH flag checking If fanotify_mark is called with illegal value of arguments flags and marks it usually returns EINVAL. When fanotify_mark is called with FAN_MARK_FLUSH the argument flags is not checked for irrelevant flags like FAN_MARK_IGNORED_MASK. The patch removes this inconsistency. If an irrelevant flag is set error EINVAL is returned. Signed-off-by: Heinrich Schuchardt Acked-by: Michael Kerrisk Acked-by: Jan Kara Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/notify/fanotify/fanotify_user.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index f6ac6a2fa91e..9163a6ed67d2 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -776,7 +776,10 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, case FAN_MARK_REMOVE: if (!mask) return -EINVAL; + break; case FAN_MARK_FLUSH: + if (flags & ~(FAN_MARK_MOUNT | FAN_MARK_FLUSH)) + return -EINVAL; break; default: return -EINVAL; -- 2.20.1