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authorPavel Begunkov <asml.silence@gmail.com>2022-12-19 18:11:40 +0300
committerJens Axboe <axboe@kernel.dk>2022-12-19 18:28:28 +0300
commit6c3e8955d4bd9811a6e1761eea412a14fb51a2e6 (patch)
tree18d5c8b748e1c4bd38cb39154e623d0285875f54 /io_uring
parent990a4de57e44f4f4cfc33c90d2ec5d285b7c8342 (diff)
downloadlinux-6c3e8955d4bd9811a6e1761eea412a14fb51a2e6.tar.xz
io_uring/net: fix cleanup after recycle
Don't access io_async_msghdr io_netmsg_recycle(), it may be reallocated. Cc: stable@vger.kernel.org Fixes: 9bb66906f23e5 ("io_uring: support multishot in recvmsg") Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/9e326f4ad4046ddadf15bf34bf3fa58c6372f6b5.1671461985.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
-rw-r--r--io_uring/net.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/net.c b/io_uring/net.c
index f76b688f476e..fbc34a7c2743 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -820,10 +820,10 @@ retry_multishot:
goto retry_multishot;
if (mshot_finished) {
- io_netmsg_recycle(req, issue_flags);
/* fast path, check for non-NULL to avoid function call */
if (kmsg->free_iov)
kfree(kmsg->free_iov);
+ io_netmsg_recycle(req, issue_flags);
req->flags &= ~REQ_F_NEED_CLEANUP;
}