diff options
| author | Yang Xiuwei <yangxiuwei@kylinos.cn> | 2025-09-19 17:03:52 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-25 11:13:49 +0200 |
| commit | a89c34babc2e5834aa0905278f26f4dbe4b26b76 (patch) | |
| tree | 64fa6be3315cda9c2d8ccb03df3367fd583d6768 | |
| parent | 922338efaad63cfe30d459dfc59f9d69ff93ded4 (diff) | |
io_uring: fix incorrect io_kiocb reference in io_link_skb
[ Upstream commit 2c139a47eff8de24e3350dadb4c9d5e3426db826 ]
In io_link_skb function, there is a bug where prev_notif is incorrectly
assigned using 'nd' instead of 'prev_nd'. This causes the context
validation check to compare the current notification with itself instead
of comparing it with the previous notification.
Fix by using the correct prev_nd parameter when obtaining prev_notif.
Signed-off-by: Yang Xiuwei <yangxiuwei@kylinos.cn>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Fixes: 6fe4220912d19 ("io_uring/notif: implement notification stacking")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | io_uring/notif.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/notif.c b/io_uring/notif.c index 28859ae3ee6e..d4cf5a1328e6 100644 --- a/io_uring/notif.c +++ b/io_uring/notif.c @@ -85,7 +85,7 @@ static int io_link_skb(struct sk_buff *skb, struct ubuf_info *uarg) return -EEXIST; prev_nd = container_of(prev_uarg, struct io_notif_data, uarg); - prev_notif = cmd_to_io_kiocb(nd); + prev_notif = cmd_to_io_kiocb(prev_nd); /* make sure all noifications can be finished in the same task_work */ if (unlikely(notif->ctx != prev_notif->ctx || |