This is a note to let you know that I've just added the patch titled
io_uring: ensure that send/sendmsg and recv/recvmsg check sqe->ioprio
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
io_uring-ensure-that-send-sendmsg-and-recv-recvmsg-check-sqe-ioprio.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Mon Jul 4 03:23:28 PM CEST 2022
From: Jens Axboe <axboe@xxxxxxxxx>
Date: Thu, 30 Jun 2022 14:42:05 -0600
Subject: io_uring: ensure that send/sendmsg and recv/recvmsg check sqe->ioprio
From: Jens Axboe <axboe@xxxxxxxxx>
commit 73911426aaaadbae54fa72359b33a7b6a56947db upstream.
All other opcodes correctly check if this is set and -EINVAL if it is
and they don't support that field, for some reason the these were
forgotten.
This was unified a bit differently in the upstream tree, but had the
same effect as making sure we error on this field. Rather than have
a painful backport of the upstream commit, just fixup the mentioned
opcodes.
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/io_uring.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4788,6 +4788,8 @@ static int io_sendmsg_prep(struct io_kio
return -EINVAL;
if (unlikely(sqe->addr2 || sqe->file_index))
return -EINVAL;
+ if (unlikely(sqe->addr2 || sqe->file_index || sqe->ioprio))
+ return -EINVAL;
sr->umsg = u64_to_user_ptr(READ_ONCE(sqe->addr));
sr->len = READ_ONCE(sqe->len);
@@ -5011,6 +5013,8 @@ static int io_recvmsg_prep(struct io_kio
return -EINVAL;
if (unlikely(sqe->addr2 || sqe->file_index))
return -EINVAL;
+ if (unlikely(sqe->addr2 || sqe->file_index || sqe->ioprio))
+ return -EINVAL;
sr->umsg = u64_to_user_ptr(READ_ONCE(sqe->addr));
sr->len = READ_ONCE(sqe->len);
Patches currently in stable-queue which might be from axboe@xxxxxxxxx are
queue-5.15/io_uring-ensure-that-send-sendmsg-and-recv-recvmsg-check-sqe-ioprio.patch
