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| author | Andrew Morton <akpm@linux-foundation.org> | 2015-09-11 13:07:53 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-11 15:21:34 -0700 |
| commit | e527b22c3f63c02832ac4cb8ed0ec3a9b638bbdf (patch) | |
| tree | 8ed463c8a124a111ba3ba14fe2cdb768e9f2721c | |
| parent | 4f1af60bcc2fc6caa7fa3036238b5994708e9a84 (diff) | |
| download | op-kernel-dev-e527b22c3f63c02832ac4cb8ed0ec3a9b638bbdf.zip op-kernel-dev-e527b22c3f63c02832ac4cb8ed0ec3a9b638bbdf.tar.gz | |
revert "ocfs2/dlm: use list_for_each_entry instead of list_for_each"
Revert commit f83c7b5e9fd6 ("ocfs2/dlm: use list_for_each_entry instead
of list_for_each").
list_for_each_entry() will dereference its `pos' argument, which can be
NULL in dlm_process_recovery_data().
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Reported-by: Fengguang Wu <fengguang.wu@gmail.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/ocfs2/dlm/dlmrecovery.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index d0e436d..ce12e0b 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -1776,7 +1776,7 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, struct dlm_migratable_lockres *mres) { struct dlm_migratable_lock *ml; - struct list_head *queue; + struct list_head *queue, *iter; struct list_head *tmpq = NULL; struct dlm_lock *newlock = NULL; struct dlm_lockstatus *lksb = NULL; @@ -1821,7 +1821,9 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm, spin_lock(&res->spinlock); for (j = DLM_GRANTED_LIST; j <= DLM_BLOCKED_LIST; j++) { tmpq = dlm_list_idx_to_ptr(res, j); - list_for_each_entry(lock, tmpq, list) { + list_for_each(iter, tmpq) { + lock = list_entry(iter, + struct dlm_lock, list); if (lock->ml.cookie == ml->cookie) break; lock = NULL; |
