Al Viro 3587b1b097 fanotify: fix FAN_Q_OVERFLOW case of fanotify_read()
If the FAN_Q_OVERFLOW bit set in event->mask, the fanotify event
metadata will not contain a valid file descriptor, but
copy_event_to_user() didn't check for that, and unconditionally does a
fd_install() on the file descriptor.

Which in turn will cause a BUG_ON() in __fd_install().

Introduced by commit 352e3b249284 ("fanotify: sanitize failure exits in
copy_event_to_user()")

Mea culpa - missed that path ;-/

Reported-by: Alex Shi <lkml.alex@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-18 09:30:00 -10:00
..
2012-07-14 16:38:34 +04:00
2012-10-09 23:33:38 -04:00
2012-10-09 16:22:17 +09:00
2012-10-09 23:33:38 -04:00
2012-10-09 15:04:25 +01:00
2012-10-17 09:18:38 -05:00
2012-10-09 18:35:22 -04:00
2012-10-09 16:22:17 +09:00
2012-10-09 16:22:17 +09:00
2012-10-06 03:05:31 +09:00
2012-07-14 16:34:47 +04:00
2012-10-09 23:33:39 -04:00
2012-10-09 23:33:39 -04:00
2012-09-07 14:57:46 -04:00
2012-07-14 16:34:47 +04:00
2012-10-22 08:50:37 +03:00
2012-10-16 13:36:50 -04:00
2012-10-09 15:52:31 +09:00
2012-07-14 16:32:47 +04:00
2012-10-09 18:35:22 -04:00
2012-07-14 16:32:48 +04:00
2012-09-26 21:08:52 -04:00
2012-10-09 23:33:39 -04:00