Commit cbe355f5 authored by Ashish Samant's avatar Ashish Samant Committed by Greg Kroah-Hartman

ocfs2: fix locking for res->tracking and dlm->tracking_list

In dlm_init_lockres() we access and modify res->tracking and
dlm->tracking_list without holding dlm->track_lock.  This can cause list
corruptions and can end up in kernel panic.

Fix this by locking res->tracking and dlm->tracking_list with
dlm->track_lock instead of dlm->spinlock.

Link: default avatarAshish Samant <>
Reviewed-by: default avatarChangwei Ge <>
Acked-by: default avatarJoseph Qi <>
Acked-by: JunPiao's avatarJun Piao <>
Cc: Mark Fasheh <>
Cc: Joel Becker <>
Cc: Junxiao Bi <>
Cc: Changwei Ge <>
Cc: <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarGreg Kroah-Hartman <>
parent b8e57efa
......@@ -584,9 +584,9 @@ static void dlm_init_lockres(struct dlm_ctxt *dlm,
res->last_used = 0;
list_add_tail(&res->tracking, &dlm->tracking_list);
memset(res->lvb, 0, DLM_LVB_LEN);
memset(res->refmap, 0, sizeof(res->refmap));
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