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aa1df3a360
linux/io_uring
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Pavel Begunkov aa1df3a360 io_uring: fix CQE reordering 
Overflowing CQEs may result in reordering, which is buggy in case of
links, F_MORE and so on. If we guarantee that we don't reorder for
the unlikely event of a CQ ring overflow, then we can further extend
this to not have to terminate multishot requests if it happens. For
other operations, like zerocopy sends, we have no choice but to honor
CQE ordering.

Reported-by: Dylan Yudaken <dylany@fb.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/ec3bc55687b0768bbe20fb62d7d06cfced7d7e70.1663892031.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-23 15:04:20 -06:00
..
advise.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
advise.h
alloc_cache.h
cancel.c io_uring: add IORING_SETUP_DEFER_TASKRUN 2022-09-21 10:30:42 -06:00
cancel.h
epoll.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
epoll.h
fdinfo.c io_uring/fdinfo: fix sqe dumping for IORING_SETUP_SQE128 2022-09-21 13:15:02 -06:00
fdinfo.h
filetable.c
filetable.h
fs.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
fs.h
io_uring.c io_uring: fix CQE reordering 2022-09-23 15:04:20 -06:00
io_uring.h io_uring: fix CQE reordering 2022-09-23 15:04:20 -06:00
io-wq.c
io-wq.h
kbuf.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
kbuf.h io_uring: allow buffer recycling in READV 2022-09-21 10:30:43 -06:00
Makefile
msg_ring.c io_uring/msg_ring: check file type before putting 2022-09-15 11:44:35 -06:00
msg_ring.h
net.c io_uring/net: fix UAF in io_sendrecv_fail() 2022-09-23 14:57:38 -06:00
net.h io_uring/net: zerocopy sendmsg 2022-09-21 13:15:02 -06:00
nop.c
nop.h
notif.c io_uring/notif: Remove the unused function io_notif_complete() 2022-09-05 11:42:39 -06:00
notif.h io_uring/net: simplify zerocopy send user API 2022-09-01 09:13:33 -06:00
opdef.c io_uring/net: zerocopy sendmsg 2022-09-21 13:15:02 -06:00
opdef.h io_uring: add custom opcode hooks on fail 2022-09-21 13:15:02 -06:00
openclose.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
openclose.h
poll.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
poll.h
refs.h
rsrc.c io_uring: add IORING_SETUP_DEFER_TASKRUN 2022-09-21 10:30:42 -06:00
rsrc.h Revert "io_uring: rename IORING_OP_FILES_UPDATE" 2022-09-01 09:13:33 -06:00
rw.c io_uring/rw: don't lose partial IO result on fail 2022-09-21 13:15:02 -06:00
rw.h io_uring/rw: don't lose partial IO result on fail 2022-09-21 13:15:02 -06:00
slist.h
splice.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
splice.h
sqpoll.c
sqpoll.h
statx.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
statx.h
sync.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
sync.h
tctx.c
tctx.h
timeout.c io_uring: remove unused return from io_disarm_next 2022-09-21 13:15:01 -06:00
timeout.h io_uring: remove unused return from io_disarm_next 2022-09-21 13:15:01 -06:00
uring_cmd.c io_uring: add iopoll infrastructure for io_uring_cmd 2022-09-21 10:30:42 -06:00
uring_cmd.h
xattr.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
xattr.h