diff options
| author | Jan Kara <[email protected]> | 2014-08-06 16:03:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-08-06 18:01:12 -0700 |
| commit | 5838d4442bd5971687b72221736222637e03140d (patch) | |
| tree | e639967a7baf1b1c6a0d1b5e0babc8083c7faad4 /tools/perf/scripts/python | |
| parent | 8ba8fa917093510cdcb4ec8ff8b9603e1b525658 (diff) | |
fanotify: fix double free of pending permission events
Commit 85816794240b ("fanotify: Fix use after free for permission
events") introduced a double free issue for permission events which are
pending in group's notification queue while group is being destroyed.
These events are freed from fanotify_handle_event() but they are not
removed from groups notification queue and thus they get freed again
from fsnotify_flush_notify().
Fix the problem by removing permission events from notification queue
before freeing them if we skip processing access response. Also expand
comments in fanotify_release() to explain group shutdown in detail.
Fixes: 85816794240b9659e66e4d9b0df7c6e814e5f603
Signed-off-by: Jan Kara <[email protected]>
Reported-by: Douglas Leeder <[email protected]>
Tested-by: Douglas Leeder <[email protected]>
Reported-by: Heinrich Schuchard <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions