6.12-stable review patch. If anyone has any objections, please let me know.
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From: Pavel Begunkov asml.silence@gmail.com
[ Upstream commit 9cc0bbdaba2a66ad90bc6ce45163b7745baffe98 ]
It's risky to have msg request opcode set to garbage, so at least initialise it to nop. Later we might want to add a user inaccessible opcode for such cases.
Signed-off-by: Pavel Begunkov asml.silence@gmail.com Link: https://lore.kernel.org/r/9afe650fcb348414a4529d89f52eb8969ba06efd.174319007... Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- io_uring/msg_ring.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/io_uring/msg_ring.c b/io_uring/msg_ring.c index 7fd9badcfaf81..35b1b585e9cbe 100644 --- a/io_uring/msg_ring.c +++ b/io_uring/msg_ring.c @@ -94,6 +94,7 @@ static int io_msg_remote_post(struct io_ring_ctx *ctx, struct io_kiocb *req, kmem_cache_free(req_cachep, req); return -EOWNERDEAD; } + req->opcode = IORING_OP_NOP; req->cqe.user_data = user_data; io_req_set_res(req, res, cflags); percpu_ref_get(&ctx->refs);