mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-07-22 02:17:36 -04:00
Code Issues Packages Projects Releases Wiki Activity

afs: Fix missing NULL pointer check in afs_break_some_callbacks()

Browse Source 
Fix afs_break_some_callbacks() to check to see if afs_lookup_volume_rcu()
returned NULL (e.g. the specified volume is unknown).

Fixes: 8230fd8217 ("afs: Make callback processing more efficient.")
Closes: https://sashiko.dev/#/patchset/20260609081738.770127-1-dhowells%40redhat.com
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://patch.msgid.link/20260622090856.2746629-16-dhowells@redhat.com
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This commit is contained in:
David Howells
2026-06-22 10:08:49 +01:00
committed by Christian Brauner
parent 3b1601471a
commit 794a011103
1 changed files with 5 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
fs/afs/callback.c
View File

@@ -213,7 +213,11 @@ static void afs_break_some_callbacks(struct afs_server *server,
rcu_read_lock();
volume = afs_lookup_volume_rcu(server->cell, vid);
if (cbb->fid.vnode == 0 && cbb->fid.unique == 0) {
if (!volume) {
/* Ignore breaks on unknown volumes. */
rcu_read_unlock();
*_count = 0;
} else if (cbb->fid.vnode == 0 && cbb->fid.unique == 0) {
afs_break_volume_callback(server, volume);
*_count -= 1;
if (*_count)