[merged mm-hotfixes-stable] ocfs2-cancel-dqi_sync_work-before-freeing-oinfo.patch removed from -mm tree

[merged mm-hotfixes-stable] ocfs2-cancel-dqi_sync_work-before-freeing-oinfo.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: ocfs2: cancel dqi_sync_work before freeing oinfo
has been removed from the -mm tree.  Its filename was
     ocfs2-cancel-dqi_sync_work-before-freeing-oinfo.patch

This patch was dropped because it was merged into the mm-hotfixes-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Joseph Qi <joseph.qi@linux.alibaba.com>
Subject: ocfs2: cancel dqi_sync_work before freeing oinfo
Date: Wed, 4 Sep 2024 15:10:03 +0800

ocfs2_global_read_info() will initialize and schedule dqi_sync_work at the
end, if error occurs after successfully reading global quota, it will
trigger the following warning with CONFIG_DEBUG_OBJECTS_* enabled:

ODEBUG: free active (active state 0) object: 00000000d8b0ce28 object type: timer_list hint: qsync_work_fn+0x0/0x16c

This reports that there is an active delayed work when freeing oinfo in
error handling, so cancel dqi_sync_work first.  BTW, return status instead
of -1 when .read_file_info fails.

Link: https://syzkaller.appspot.com/bug?extid=f7af59df5d6b25f0febd
Link: https://lkml.kernel.org/r/20240904071004.2067695-1-joseph.qi@linux.alibaba.com
Fixes: 171bf93ce11f ("ocfs2: Periodic quota syncing")
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Heming Zhao <heming.zhao@suse.com>
Reported-by: syzbot+f7af59df5d6b25f0febd@syzkaller.appspotmail.com
Tested-by: syzbot+f7af59df5d6b25f0febd@syzkaller.appspotmail.com
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ocfs2/quota_local.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/fs/ocfs2/quota_local.c~ocfs2-cancel-dqi_sync_work-before-freeing-oinfo
+++ a/fs/ocfs2/quota_local.c
@@ -692,7 +692,7 @@ static int ocfs2_local_read_info(struct
 	int status;
 	struct buffer_head *bh = NULL;
 	struct ocfs2_quota_recovery *rec;
-	int locked = 0;
+	int locked = 0, global_read = 0;
 
 	info->dqi_max_spc_limit = 0x7fffffffffffffffLL;
 	info->dqi_max_ino_limit = 0x7fffffffffffffffLL;
@@ -700,6 +700,7 @@ static int ocfs2_local_read_info(struct
 	if (!oinfo) {
 		mlog(ML_ERROR, "failed to allocate memory for ocfs2 quota"
 			       " info.");
+		status = -ENOMEM;
 		goto out_err;
 	}
 	info->dqi_priv = oinfo;
@@ -712,6 +713,7 @@ static int ocfs2_local_read_info(struct
 	status = ocfs2_global_read_info(sb, type);
 	if (status < 0)
 		goto out_err;
+	global_read = 1;
 
 	status = ocfs2_inode_lock(lqinode, &oinfo->dqi_lqi_bh, 1);
 	if (status < 0) {
@@ -782,10 +784,12 @@ out_err:
 		if (locked)
 			ocfs2_inode_unlock(lqinode, 1);
 		ocfs2_release_local_quota_bitmaps(&oinfo->dqi_chunk);
+		if (global_read)
+			cancel_delayed_work_sync(&oinfo->dqi_sync_work);
 		kfree(oinfo);
 	}
 	brelse(bh);
-	return -1;
+	return status;
 }
 
 /* Write local info to quota file */
_

Patches currently in -mm which might be from joseph.qi@linux.alibaba.com are

ocfs2-cleanup-return-value-and-mlog-in-ocfs2_global_read_info.patch