Jens Axboe 8caa03f10b io_uring/poll: don't reissue in case of poll race on multishot request ... A previous commit fixed a poll race that can occur, but it's only applicable for multishot requests. For a multishot request, we can safely ignore a spurious wakeup, as we never leave the waitqueue to begin with. A blunt reissue of a multishot armed request can cause us to leak a buffer, if they are ring provided. While this seems like a bug in itself, it's not really defined behavior to reissue a multishot request directly. It's less efficient to do so as well, and not required to rearm anything like it is for singleshot poll requests. Cc: stable@vger.kernel.org Fixes: 6e5aedb932 ("io_uring/poll: attempt request issue after racy poll wakeup") Reported-and-tested-by: Olivier Langlois <olivier@trillion01.com> Link: https://github.com/axboe/liburing/issues/778 Signed-off-by: Jens Axboe <axboe@kernel.dk>		2023-01-20 15:11:54 -07:00
..
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	2022-12-21 13:31:40 -07:00
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: include locked hash table in fdinfo output	2023-01-10 10:24:52 -07:00
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_uring.c	io_uring/msg_ring: fix remote queue to disabled ring	2023-01-20 09:49:34 -07:00
io_uring.h	io_uring: lockdep annotate CQ locking	2023-01-03 19:05:41 -07:00
io-wq.c	io_uring/io-wq: only free worker if it was allocated for creation	2023-01-08 10:39:17 -07:00
io-wq.h
kbuf.c	io_uring: don't use complete_post in kbuf	2022-11-25 06:11:15 -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/msg_ring: fix remote queue to disabled ring	2023-01-20 09:49:34 -07:00
msg_ring.h	io_uring: get rid of double locking	2022-12-07 06:47:13 -07:00
net.c	io_uring/net: fix cleanup after recycle	2022-12-19 08:28:28 -07:00
net.h	io_uring/net: zerocopy sendmsg	2022-09-21 13:15:02 -06:00
nop.c
nop.h
notif.c	io_uring/net: move mm accounting to a slower path	2022-11-21 07:38:31 -07:00
notif.h	io_uring: move zc reporting from the hot path	2022-11-21 07:38:31 -07:00
opdef.c	io_uring: get rid of double locking	2022-12-07 06:47:13 -07:00
opdef.h	io_uring: dont remove file from msg_ring reqs	2022-12-07 06:47:13 -07:00
openclose.c	io_uring: make io_kiocb_to_cmd() typesafe	2022-08-12 17:01:00 -06:00
openclose.h
poll.c	io_uring/poll: don't reissue in case of poll race on multishot request	2023-01-20 15:11:54 -07:00
poll.h
refs.h
rsrc.c	io_uring: use tw for putting rsrc	2022-12-07 06:47:13 -07:00
rsrc.h	io_uring: use tw for putting rsrc	2022-12-07 06:47:13 -07:00
rw.c	io_uring: lock overflowing for IOPOLL	2023-01-13 07:32:46 -07:00
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: ease timeout flush locking requirements	2022-12-14 08:53:35 -07:00
timeout.h	io_uring: remove unused return from io_disarm_next	2022-09-21 13:15:01 -06:00
uring_cmd.c	io_uring: iopoll protect complete_post	2022-11-23 10:45:31 -07:00
uring_cmd.h
xattr.c	acl: conver higher-level helpers to rely on mnt_idmap	2022-10-31 17:48:12 +01:00
xattr.h