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linux-stable/io_uring
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Pavel Begunkov e595dcd987 io_uring: fix CQ waiting timeout handling 
commit 12521a5d5c upstream.

Jiffy to ktime CQ waiting conversion broke how we treat timeouts, in
particular we rearm it anew every time we get into
io_cqring_wait_schedule() without adjusting the timeout. Waiting for 2
CQEs and getting a task_work in the middle may double the timeout value,
or even worse in some cases task may wait indefinitely.

Cc: stable@vger.kernel.org
Fixes: 228339662b ("io_uring: don't convert to jiffies for waiting on timeouts")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/f7bffddd71b08f28a877d44d37ac953ddb01590d.1672915663.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-12 12:02:48 +01:00
..
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/cancel: re-grab ctx mutex after finishing wait 2023-01-12 12:02:38 +01:00
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: fix fdinfo sqe offsets calculation 2022-10-12 16:30:56 -06:00
fdinfo.h
filetable.c io_uring/filetable: fix file reference underflow 2022-11-25 06:54:46 -07:00
filetable.h io_uring: kill hot path fixed file bitmap debug checks 2022-10-16 17:07:53 -06:00
fs.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
fs.h
io-wq.c io-wq: Fix memory leak in worker creation 2022-10-20 05:48:59 -07:00
io-wq.h
io_uring.c io_uring: fix CQ waiting timeout handling 2023-01-12 12:02:48 +01:00
io_uring.h io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups 2023-01-04 11:28:48 +01:00
kbuf.c io_uring: check for rollover of buffer ID when providing buffers 2022-11-10 11:07:41 -07:00
kbuf.h io_uring: allow buffer recycling in READV 2022-09-21 10:30:43 -06:00
Makefile
msg_ring.c io_uring: improve io_double_lock_ctx fail handling 2022-12-31 13:33:12 +01:00
msg_ring.h
net.c io_uring/net: fix cleanup after recycle 2022-12-31 13:33:12 +01:00
net.h io_uring/net: zerocopy sendmsg 2022-09-21 13:15:02 -06:00
nop.c
nop.h
notif.c io_uring/net: introduce IORING_SEND_ZC_REPORT_USAGE flag 2022-12-31 13:33:11 +01:00
notif.h io_uring/net: introduce IORING_SEND_ZC_REPORT_USAGE flag 2022-12-31 13:33:11 +01:00
opdef.c io_uring: dont remove file from msg_ring reqs 2022-12-31 13:33:12 +01:00
opdef.h io_uring: dont remove file from msg_ring reqs 2022-12-31 13:33:12 +01:00
openclose.c io_uring: make io_kiocb_to_cmd() typesafe 2022-08-12 17:01:00 -06:00
openclose.h
poll.c io_uring: pass in EPOLL_URING_WAKE for eventfd signaling and wakeups 2023-01-04 11:28:48 +01:00
poll.h
refs.h
rsrc.c io_uring: remove FFS_SCM 2022-10-16 17:07:12 -06:00
rsrc.h io_uring: remove FFS_SCM 2022-10-16 17:07:12 -06:00
rw.c io_uring: remove iopoll spinlock 2022-12-31 13:33:12 +01:00
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 io_uring: remove io_register_submitter 2022-10-07 12:25:30 -06:00
tctx.h io_uring: simplify __io_uring_add_tctx_node 2022-10-07 12:25:30 -06:00
timeout.c io_uring: protect cq_timeouts with timeout_lock 2022-12-31 13:33:12 +01:00
timeout.h io_uring: remove unused return from io_disarm_next 2022-09-21 13:15:01 -06:00
uring_cmd.c io_uring: introduce fixed buffer support for io_uring_cmd 2022-09-30 07:50:59 -06:00
uring_cmd.h
xattr.c __io_setxattr(): constify path 2022-09-01 17:39:05 -04:00
xattr.h