* [PATCH] io_uring/cmd_net: use READ_ONCE() for ->addr3 read
@ 2026-02-24 18:39 Jens Axboe
0 siblings, 0 replies; only message in thread
From: Jens Axboe @ 2026-02-24 18:39 UTC (permalink / raw)
To: io-uring
Any SQE read should use READ_ONCE(), to ensure the result is read once
and only once. Doesn't really matter for this case, but it's better to
keep these 100% consistent and always use READ_ONCE() for the prep side
of SQE handling.
Fixes: 5d24321e4c15 ("io_uring: Introduce getsockname io_uring cmd")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
diff --git a/io_uring/cmd_net.c b/io_uring/cmd_net.c
index 57ddaf874611..125a81c520a6 100644
--- a/io_uring/cmd_net.c
+++ b/io_uring/cmd_net.c
@@ -146,7 +146,7 @@ static int io_uring_cmd_getsockname(struct socket *sock,
return -EINVAL;
uaddr = u64_to_user_ptr(READ_ONCE(sqe->addr));
- ulen = u64_to_user_ptr(sqe->addr3);
+ ulen = u64_to_user_ptr(READ_ONCE(sqe->addr3));
peer = READ_ONCE(sqe->optlen);
if (peer > 1)
return -EINVAL;
--
Jens Axboe
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