OpenCloudOS-Kernel/fs/notify/fanotify
Jan Kara 13116dfd13 fanotify: Fix use after free in mask checking
We cannot use the event structure returned from
fsnotify_add_notify_event() because that event can be freed by the time
that function returns. Use the mask argument passed into the event
handler directly instead. This also fixes a possible problem when we
could unnecessarily wait for permission response for a normal fanotify
event which got merged with a permission event.

We also disallow merging of permission event with any other event so
that we know the permission event which we just created is the one on
which we should wait for permission response.

Reported-and-tested-by: Jiri Kosina <jkosina@suse.cz>
Reported-and-tested-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: Jan Kara <jack@suse.cz>
2014-01-29 13:57:04 +01:00
..
Kconfig treewide: fix typo of "suport" in various comments and Kconfig 2012-11-19 14:16:09 +01:00
Makefile fanotify: fanotify_init syscall declaration 2010-07-28 09:58:55 -04:00
fanotify.c fanotify: Fix use after free in mask checking 2014-01-29 13:57:04 +01:00
fanotify.h fsnotify: do not share events between notification groups 2014-01-21 16:19:41 -08:00
fanotify_user.c compat: fix sys_fanotify_mark 2014-01-27 21:02:40 -08:00