Jan Kara b1da6a5187 fsnotify: Fix NULL ptr deref in fanotify_get_fsid() ... fanotify_get_fsid() is reading mark->connector->fsid under srcu. It can happen that it sees mark not fully initialized or mark that is already detached from the object list. In these cases mark->connector can be NULL leading to NULL ptr dereference. Fix the problem by being careful when reading mark->connector and check it for being NULL. Also use WRITE_ONCE when writing the mark just to prevent compiler from doing something stupid. Reported-by: syzbot+15927486a4f1bfcbaf91@syzkaller.appspotmail.com Fixes: 77115225ac ("fanotify: cache fsid in fsnotify_mark_connector") Signed-off-by: Jan Kara <jack@suse.cz>		2019-04-28 22:14:50 +02:00
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dnotify	Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2018-08-21 13:47:29 -07:00
fanotify	fsnotify: Fix NULL ptr deref in fanotify_get_fsid()	2019-04-28 22:14:50 +02:00
inotify	inotify: Fix fsnotify_mark refcount leak in inotify_update_existing_watch()	2019-03-11 10:13:17 +01:00
fdinfo.c	fsnotify/fdinfo: include fdinfo.h for inotify_show_fdinfo()	2018-11-15 17:34:27 +01:00
fdinfo.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
fsnotify.c	fsnotify: send all event types to super block marks	2019-02-06 15:20:30 +01:00
fsnotify.h	fsnotify: add super block object type	2018-09-03 15:14:01 +02:00
group.c	fs: fsnotify: account fsnotify metadata to kmemcg	2018-08-17 16:20:30 -07:00
Kconfig	rcu: Make SRCU optional by using CONFIG_SRCU	2015-01-06 11:04:29 -08:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mark.c	fsnotify: Fix NULL ptr deref in fanotify_get_fsid()	2019-04-28 22:14:50 +02:00
notification.c	fsnotify: Create function to remove event from notification list	2019-02-18 12:41:16 +01:00