linux-kernel - Syzbot test for ocfs2: Fix deadlock in ocfs2_del_inode_from

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Message-Id: <20260106113053.284336-1-activprithvi@gmail.com>
Date: Tue,  6 Jan 2026 17:00:53 +0530
From: Prithvi Tambewagh <activprithvi@...il.com>
To: syzbot+78359d5fbb04318c35e9@...kaller.appspotmail.com,
	jlbec@...lplan.org,
	joseph.qi@...ux.alibaba.com,
	mark@...heh.com
Cc: heming.zhao@...e.com,
	linux-kernel@...r.kernel.org,
	ocfs2-devel@...ts.linux.dev,
	syzkaller-bugs@...glegroups.com,
	Prithvi Tambewagh <activprithvi@...il.com>
Subject: Syzbot test for ocfs2: Fix deadlock in ocfs2_del_inode_from_orphan

#syz test upstream 765e56e41a5af2d456ddda6cbd617b9d3295ab4e

Signed-off-by: Prithvi Tambewagh <activprithvi@...il.com>
---
 fs/ocfs2/aops.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 76c86f1c2b1c..586e3b74d782 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -2295,8 +2295,6 @@ static int ocfs2_dio_end_io_write(struct inode *inode,
 		goto out;
 	}
 
-	down_write(&oi->ip_alloc_sem);
-
 	/* Delete orphan before acquire i_rwsem. */
 	if (dwc->dw_orphaned) {
 		BUG_ON(dwc->dw_writer_pid != task_pid_nr(current));
@@ -2309,6 +2307,8 @@ static int ocfs2_dio_end_io_write(struct inode *inode,
 			mlog_errno(ret);
 	}
 
+	down_write(&oi->ip_alloc_sem);
+
 	di = (struct ocfs2_dinode *)di_bh->b_data;
 
 	ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), di_bh);

base-commit: 765e56e41a5af2d456ddda6cbd617b9d3295ab4e
-- 
2.34.1