The patch titled Subject: ocfs2: remove unreasonable unlock in ocfs2_read_blocks has been added to the -mm mm-hotfixes-unstable branch. Its filename is ocfs2-remove-unreasonable-unlock-in-ocfs2_read_blocks.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------ From: Lizhi Xu lizhi.xu@windriver.com Subject: ocfs2: remove unreasonable unlock in ocfs2_read_blocks Date: Mon, 2 Sep 2024 10:36:35 +0800

Patch series "Misc fixes for ocfs2_read_blocks", v5.

This series contains 2 fixes for ocfs2_read_blocks(). The first patch fix the issue reported by syzbot, which detects bad unlock balance in ocfs2_read_blocks(). The second patch fixes an issue reported by Heming Zhao when reviewing above fix.

This patch (of 2):

There was a lock release before exiting, so remove the unreasonable unlock.

Link: https://lkml.kernel.org/r/20240902023636.1843422-1-joseph.qi@linux.alibaba.c... Link: https://lkml.kernel.org/r/20240902023636.1843422-2-joseph.qi@linux.alibaba.c... Fixes: cf76c78595ca ("ocfs2: don't put and assigning null to bh allocated outside") Signed-off-by: Lizhi Xu lizhi.xu@windriver.com Signed-off-by: Joseph Qi joseph.qi@linux.alibaba.com Reviewed-by: Heming Zhao heming.zhao@suse.com Reviewed-by: Joseph Qi joseph.qi@linux.alibaba.com Reported-by: syzbot+ab134185af9ef88dfed5@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=ab134185af9ef88dfed5 Tested-by: syzbot+ab134185af9ef88dfed5@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 [4.20+] Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

fs/ocfs2/buffer_head_io.c | 1 - 1 file changed, 1 deletion(-)

--- a/fs/ocfs2/buffer_head_io.c~ocfs2-remove-unreasonable-unlock-in-ocfs2_read_blocks +++ a/fs/ocfs2/buffer_head_io.c @@ -235,7 +235,6 @@ int ocfs2_read_blocks(struct ocfs2_cachi if (bhs[i] == NULL) { bhs[i] = sb_getblk(sb, block++); if (bhs[i] == NULL) { - ocfs2_metadata_cache_io_unlock(ci); status = -ENOMEM; mlog_errno(status); /* Don't forget to put previous bh! */ _

Patches currently in -mm which might be from lizhi.xu@windriver.com are

ocfs2-remove-unreasonable-unlock-in-ocfs2_read_blocks.patch ocfs2-fix-possible-null-ptr-deref-in-ocfs2_set_buffer_uptodate.patch