summaryrefslogtreecommitdiff
path: root/fs/afs/internal.h
diff options
context:
space:
mode:
authorDavid Howells <dhowells@redhat.com>2019-06-20 18:49:35 +0300
committerDavid Howells <dhowells@redhat.com>2019-06-20 18:49:35 +0300
commit90fa9b64523a645a97edc0bdcf2d74759957eeee (patch)
tree071616b3d60726bf33c9af19f6d71e4d27757067 /fs/afs/internal.h
parenta6853b9ce81a8f32f3c13c30ae951bb6830a896a (diff)
downloadlinux-90fa9b64523a645a97edc0bdcf2d74759957eeee.tar.xz
afs: Fix uninitialised spinlock afs_volume::cb_break_lock
Fix the cb_break_lock spinlock in afs_volume struct by initialising it when the volume record is allocated. Also rename the lock to cb_v_break_lock to distinguish it from the lock of the same name in the afs_server struct. Without this, the following trace may be observed when a volume-break callback is received: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 2 PID: 50 Comm: kworker/2:1 Not tainted 5.2.0-rc1-fscache+ #3045 Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014 Workqueue: afs SRXAFSCB_CallBack Call Trace: dump_stack+0x67/0x8e register_lock_class+0x23b/0x421 ? check_usage_forwards+0x13c/0x13c __lock_acquire+0x89/0xf73 lock_acquire+0x13b/0x166 ? afs_break_callbacks+0x1b2/0x3dd _raw_write_lock+0x2c/0x36 ? afs_break_callbacks+0x1b2/0x3dd afs_break_callbacks+0x1b2/0x3dd ? trace_event_raw_event_afs_server+0x61/0xac SRXAFSCB_CallBack+0x11f/0x16c process_one_work+0x2c5/0x4ee ? worker_thread+0x234/0x2ac worker_thread+0x1d8/0x2ac ? cancel_delayed_work_sync+0xf/0xf kthread+0x11f/0x127 ? kthread_park+0x76/0x76 ret_from_fork+0x24/0x30 Fixes: 68251f0a6818 ("afs: Fix whole-volume callback handling") Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/internal.h')
-rw-r--r--fs/afs/internal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index c9495c8dea93..8252d69bd3e4 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -618,7 +618,7 @@ struct afs_volume {
unsigned int servers_seq; /* Incremented each time ->servers changes */
unsigned cb_v_break; /* Break-everything counter. */
- rwlock_t cb_break_lock;
+ rwlock_t cb_v_break_lock;
afs_voltype_t type; /* type of volume */
short error;