linux-kernel - Syzbot test for v2: io_uring: fix filename leak in __io_openat

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Message-Id: <20251225063402.19684-1-activprithvi@gmail.com>
Date: Thu, 25 Dec 2025 12:04:02 +0530
From: Prithvi Tambewagh <activprithvi@...il.com>
To: syzbot+00e61c43eb5e4740438f@...kaller.appspotmail.com,
	axboe@...nel.dk,
	brauner@...nel.org,
	jack@...e.cz,
	viro@...iv.linux.org.uk
Cc: io-uring@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com,
	Prithvi Tambewagh <activprithvi@...il.com>
Subject: Syzbot test for v2: io_uring: fix filename leak in __io_openat_prep()

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b927546677c876e26eba308550207c2ddf812a43

Signed-off-by: Prithvi Tambewagh <activprithvi@...il.com>
---
 io_uring/openclose.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/io_uring/openclose.c b/io_uring/openclose.c
index bfeb91b31bba..15dde9bd6ff6 100644
--- a/io_uring/openclose.c
+++ b/io_uring/openclose.c
@@ -73,13 +73,13 @@ static int __io_openat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe
 		open->filename = NULL;
 		return ret;
 	}
+	req->flags |= REQ_F_NEED_CLEANUP;
 
 	open->file_slot = READ_ONCE(sqe->file_index);
 	if (open->file_slot && (open->how.flags & O_CLOEXEC))
 		return -EINVAL;
 
 	open->nofile = rlimit(RLIMIT_NOFILE);
-	req->flags |= REQ_F_NEED_CLEANUP;
 	if (io_openat_force_async(open))
 		req->flags |= REQ_F_FORCE_ASYNC;
 	return 0;

base-commit: b927546677c876e26eba308550207c2ddf812a43
-- 
2.34.1