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authorJens Axboe <axboe@kernel.dk>2020-02-09 11:29:15 -0700
committerJens Axboe <axboe@kernel.dk>2020-02-09 11:32:10 -0700
commitb537916ca5107c3a8714b8ab3099c0ec205aec12 (patch)
treef4ae546e80055b395dd871aaeb1e70b96a582d3f /fs
parent6ab231448fdc5e37c15a94a4700fca11e80007f7 (diff)
downloadlinux-b537916ca5107c3a8714b8ab3099c0ec205aec12.tar.bz2
io_uring: retain sockaddr_storage across send/recvmsg async punt
Jonas reports that he sometimes sees -97/-22 error returns from sendmsg, if it gets punted async. This is due to not retaining the sockaddr_storage between calls. Include that in the state we copy when going async. Cc: stable@vger.kernel.org # 5.3+ Reported-by: Jonas Bonn <jonas@norrbonn.se> Tested-by: Jonas Bonn <jonas@norrbonn.se> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
-rw-r--r--fs/io_uring.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 971d51c50151..6d4e20d59729 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -442,6 +442,7 @@ struct io_async_msghdr {
struct iovec *iov;
struct sockaddr __user *uaddr;
struct msghdr msg;
+ struct sockaddr_storage addr;
};
struct io_async_rw {
@@ -3032,12 +3033,11 @@ static int io_sendmsg(struct io_kiocb *req, struct io_kiocb **nxt,
sock = sock_from_file(req->file, &ret);
if (sock) {
struct io_async_ctx io;
- struct sockaddr_storage addr;
unsigned flags;
if (req->io) {
kmsg = &req->io->msg;
- kmsg->msg.msg_name = &addr;
+ kmsg->msg.msg_name = &req->io->msg.addr;
/* if iov is set, it's allocated already */
if (!kmsg->iov)
kmsg->iov = kmsg->fast_iov;
@@ -3046,7 +3046,7 @@ static int io_sendmsg(struct io_kiocb *req, struct io_kiocb **nxt,
struct io_sr_msg *sr = &req->sr_msg;
kmsg = &io.msg;
- kmsg->msg.msg_name = &addr;
+ kmsg->msg.msg_name = &io.msg.addr;
io.msg.iov = io.msg.fast_iov;
ret = sendmsg_copy_msghdr(&io.msg.msg, sr->msg,
@@ -3185,12 +3185,11 @@ static int io_recvmsg(struct io_kiocb *req, struct io_kiocb **nxt,
sock = sock_from_file(req->file, &ret);
if (sock) {
struct io_async_ctx io;
- struct sockaddr_storage addr;
unsigned flags;
if (req->io) {
kmsg = &req->io->msg;
- kmsg->msg.msg_name = &addr;
+ kmsg->msg.msg_name = &req->io->msg.addr;
/* if iov is set, it's allocated already */
if (!kmsg->iov)
kmsg->iov = kmsg->fast_iov;
@@ -3199,7 +3198,7 @@ static int io_recvmsg(struct io_kiocb *req, struct io_kiocb **nxt,
struct io_sr_msg *sr = &req->sr_msg;
kmsg = &io.msg;
- kmsg->msg.msg_name = &addr;
+ kmsg->msg.msg_name = &io.msg.addr;
io.msg.iov = io.msg.fast_iov;
ret = recvmsg_copy_msghdr(&io.msg.msg, sr->msg,