fanotify: fix fsnotify_prepare_user_wait() failure

If fsnotify_prepare_user_wait() fails, we leave the event on the
notification list.  Which will result in a warning in
fsnotify_destroy_event() and later use-after-free.

Instead of adding a new helper to remove the event from the list in this
case, I opted to move the prepare/finish up into fanotify_handle_event().

This will allow these to be moved further out into the generic code later,
and perhaps let us move to non-sleeping RCU.

Reviewed-by: Amir Goldstein <[email protected]>
Signed-off-by: Miklos Szeredi <[email protected]>
Fixes: 05f0e38724e8 ("fanotify: Release SRCU lock when waiting for userspace response")
Cc: <[email protected]> # v4.12
Signed-off-by: Jan Kara <[email protected]>

0 files changed, 0 insertions, 0 deletions