tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

io_uring/net: ensure async prep handlers always initialize ->done_io

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2071621

[ Upstream commit f3a640cca951ef9715597e68f5363afc0f452a88 ]

If we get a request with IOSQE_ASYNC set, then we first run the prep
async handlers. But if we then fail setting it up and want to post
a CQE with -EINVAL, we use ->done_io. This was previously guarded with
REQ_F_PARTIAL_IO, and the normal setup handlers do set it up before any
potential errors, but we need to cover the async setup too.

Fixes: 9817ad85899f ("io_uring/net: remove dependency on REQ_F_PARTIAL_IO for sr->done_io")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Jens Axboe
2024-03-15 16:36:23 -06:00
committed by Stefan Bader
parent 93e925ee52
commit a5f61ac91b
1 changed files with 8 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
io_uring/net.c
+8 -1
View File
@@ -311,7 +311,10 @@ int io_send_prep_async(struct io_kiocb *req)
struct io_async_msghdr *io;
int ret;
if (!zc->addr || req_has_async_data(req))
if (req_has_async_data(req))
return 0;
zc->done_io = 0;
if (!zc->addr)
return 0;
io = io_msg_alloc_async_prep(req);
if (!io)
@@ -338,8 +341,10 @@ static int io_setup_async_addr(struct io_kiocb *req,
int io_sendmsg_prep_async(struct io_kiocb *req)
{
struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
int ret;
sr->done_io = 0;
if (!io_msg_alloc_async_prep(req))
return -ENOMEM;
ret = io_sendmsg_copy_hdr(req, req->async_data);
@@ -586,9 +591,11 @@ static int io_recvmsg_copy_hdr(struct io_kiocb *req,
int io_recvmsg_prep_async(struct io_kiocb *req)
{
struct io_sr_msg *sr = io_kiocb_to_cmd(req, struct io_sr_msg);
struct io_async_msghdr *iomsg;
int ret;
sr->done_io = 0;
if (!io_msg_alloc_async_prep(req))
return -ENOMEM;
iomsg = req->async_data;