Pavel Begunkov 7fdbc5f014 io_uring: disallow self-propelled ring polling ... When we post a CQE we wake all ring pollers as it normally should be. However, if a CQE was generated by a multishot poll request targeting its own ring, it'll wake that request up, which will make it to post a new CQE, which will wake the request and so on until it exhausts all CQ entries. Don't allow multishot polling io_uring files but downgrade them to oneshots, which was always stated as a correct behaviour that the userspace should check for. Cc: stable@vger.kernel.org Fixes: aa43477b04 ("io_uring: poll rework") Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/3124038c0e7474d427538c2d915335ec28c92d21.1668785722.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>		2022-11-18 09:29:31 -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: 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: fix fdinfo sqe offsets calculation	2022-10-12 16:30:56 -06:00
fdinfo.h
filetable.c
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: fix multishot accept request leaks	2022-11-17 12:33:33 -07:00
io_uring.h	io_uring: fix multishot accept request leaks	2022-11-17 12:33:33 -07:00
io-wq.c	io-wq: Fix memory leak in worker creation	2022-10-20 05:48:59 -07:00
io-wq.h
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/msg_ring: Fix NULL pointer dereference in io_msg_send_fd()	2022-10-19 12:33:33 -07:00
msg_ring.h
net.c	io_uring: fix multishot recv request leaks	2022-11-17 12:33:33 -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/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/opdef: remove 'audit_skip' from SENDMSG_ZC	2022-10-12 16:30:56 -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: disallow self-propelled ring polling	2022-11-18 09:29:31 -07:00
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/rw: remove leftover debug statement	2022-10-16 17:24:10 -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	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: 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: 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