Jens Axboe d6cc8dd231 io_uring/rw: ensure io->bytes_done is always initialized ...

commit 0a535eddbe0dc1de4386046ab849f08aeb2f8faf upstream.

If IOSQE_ASYNC is set and we fail importing an iovec for a readv or
writev request, then we leave ->bytes_done uninitialized and hence the
eventual failure CQE posted can potentially have a random res value
rather than the expected -EINVAL.

Setup ->bytes_done before potentially failing, so we have a consistent
value if we fail the request early.

Cc: stable@vger.kernel.org
Reported-by: xingwei lee <xrivendell7@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-01-25 15:27:41 -08:00

..

advise.c

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advise.h

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alloc_cache.h

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cancel.c

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cancel.h

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epoll.c

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epoll.h

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fdinfo.c

io_uring/fdinfo: lock SQ thread while retrieving thread cpu/pid

2023-11-02 09:35:29 +01:00

fdinfo.h

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filetable.c

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filetable.h

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fs.c

io_uring/fs: consider link->flags when getting path for LINKAT

2023-12-03 07:32:11 +01:00

fs.h

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io_uring.c

io_uring: fix mutex_unlock with unreferenced ctx

2023-12-13 18:39:18 +01:00

io_uring.h

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io-wq.c

io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used

2023-09-19 12:27:54 +02:00

io-wq.h

io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used

2023-09-19 12:27:54 +02:00

kbuf.c

io_uring/kbuf: Allow the full buffer id space for provided buffers

2023-11-20 11:52:00 +01:00

kbuf.h

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Makefile

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msg_ring.c

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msg_ring.h

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net.c

net: Declare MSG_SPLICE_PAGES internal sendmsg() flag

2024-01-10 17:10:27 +01:00

net.h

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nop.c

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nop.h

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notif.c

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notif.h

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opdef.c

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opdef.h

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openclose.c

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openclose.h

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poll.c

io_uring: always lock in io_apoll_task_func

2023-09-19 12:27:54 +02:00

poll.h

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refs.h

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rsrc.c

io_uring: fix off-by one bvec index

2023-12-03 07:32:13 +01:00

rsrc.h

io_uring/af_unix: disable sending io_uring over sockets

2023-12-13 18:39:17 +01:00

rw.c

io_uring/rw: ensure io->bytes_done is always initialized

2024-01-25 15:27:41 -08:00

rw.h

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slist.h

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splice.c

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splice.h

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sqpoll.c

io_uring: Don't set affinity on a dying sqpoll thread

2023-09-19 12:27:54 +02:00

sqpoll.h

io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used

2023-09-19 12:27:54 +02:00

statx.c

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statx.h

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sync.c

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sync.h

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tctx.c

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tctx.h

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timeout.c

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timeout.h

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uring_cmd.c

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uring_cmd.h

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xattr.c

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xattr.h

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