Pavel Begunkov 0c323430e4 io_uring: fix drain stalls by invalid SQE ...

[ Upstream commit cfdbaa3a29 ]

cq_extra is protected by ->completion_lock, which io_get_sqe() misses.
The bug is harmless as it doesn't happen in real life, requires invalid
SQ index array and racing with submission, and only messes up the
userspace, i.e. stall requests execution but will be cleaned up on
ring destruction.

Fixes: 15641e4270 ("io_uring: don't cache number of dropped SQEs")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/66096d54651b1a60534bb2023f2947f09f50ef73.1691538547.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-09-13 09:42:43 +02:00

..

advise.c

io_uring: make io_kiocb_to_cmd() typesafe

2022-08-12 17:01:00 -06:00

advise.h

io_uring: split out fadvise/madvise operations

2022-07-24 18:39:11 -06:00

alloc_cache.h

io_uring: fix poll/netmsg alloc caches

2023-04-06 12:10:52 +02:00

cancel.c

io_uring/cancel: re-grab ctx mutex after finishing wait

2023-01-12 12:02:38 +01:00

cancel.h

io_uring: add sync cancelation API through io_uring_register()

2022-07-24 18:39:15 -06:00

epoll.c

io_uring: undeprecate epoll_ctl support

2023-06-09 10:34:23 +02:00

epoll.h

io_uring: move epoll handler to its own file

2022-07-24 18:39:11 -06:00

fdinfo.c

io_uring/fdinfo: include locked hash table in fdinfo output

2023-01-18 11:58:15 +01:00

fdinfo.h

io_uring: move fdinfo helpers to its own file

2022-07-24 18:39:12 -06:00

filetable.c

io_uring/rsrc: fix null-ptr-deref in io_file_bitmap_get()

2023-03-30 12:49:25 +02:00

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: split out filesystem related operations

2022-07-24 18:39:11 -06:00

io_uring.c

io_uring: fix drain stalls by invalid SQE

2023-09-13 09:42:43 +02:00

io_uring.h

io_uring: mark task TASK_RUNNING before handling resume/task work

2023-03-10 09:34:07 +01:00

io-wq.c

io_uring/io-wq: only free worker if it was allocated for creation

2023-01-18 11:58:33 +01:00

io-wq.h

io_uring: move list helpers to a separate file

2022-07-24 18:39:15 -06:00

kbuf.c

io_uring: fix memory leak when removing provided buffers

2023-04-13 16:55:31 +02:00

kbuf.h

io_uring: allow buffer recycling in READV

2022-09-21 10:30:43 -06:00

Makefile

io_uring: add zc notification infrastructure

2022-07-24 18:41:06 -06:00

msg_ring.c

io_uring/msg_ring: fix missing lock on overflow for IOPOLL

2023-08-30 16:11:05 +02:00

msg_ring.h

io_uring: get rid of double locking

2023-08-30 16:11:04 +02:00

net.c

io_uring/net: use the correct msghdr union member in io_sendmsg_copy_hdr

2023-06-28 11:12:33 +02:00

net.h

io_uring/net: zerocopy sendmsg

2022-09-21 13:15:02 -06:00

nop.c

io_uring: kill extra io_uring_types.h includes

2022-07-24 18:39:14 -06:00

nop.h

io_uring: move nop into its own file

2022-07-24 18:39:11 -06:00

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: get rid of double locking

2023-08-30 16:11:04 +02:00

opdef.h

io_uring: dont remove file from msg_ring reqs

2022-12-31 13:33:12 +01:00

openclose.c

io_uring: correct check for O_TMPFILE

2023-08-16 18:27:24 +02:00

openclose.h

io_uring: split out fixed file installation and removal

2022-07-24 18:39:16 -06:00

poll.c

io_uring/poll: serialize poll linked timer start with poll removal

2023-06-28 11:12:27 +02:00

poll.h

io_uring/poll: allow some retries for poll triggering spuriously

2023-03-11 13:55:43 +01:00

refs.h

io_uring: make io_uring_types.h public

2022-07-24 18:39:14 -06:00

rsrc.c

io_uring/rsrc: use nospec'ed indexes

2023-05-11 23:03:24 +09:00

rsrc.h

io_uring/rsrc: fix rogue rsrc node grabbing

2023-04-06 12:10:51 +02:00

rw.c

use less confusing names for iov_iter direction initializers

2023-02-09 11:28:04 +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

io_uring: move list helpers to a separate file

2022-07-24 18:39:15 -06:00

splice.c

io_uring: make io_kiocb_to_cmd() typesafe

2022-08-12 17:01:00 -06:00

splice.h

io_uring: split out splice related operations

2022-07-24 18:39:11 -06:00

sqpoll.c

io_uring: unlock sqd->lock before sq thread release CPU

2023-06-21 16:00:53 +02:00

sqpoll.h

io_uring: move SQPOLL related handling into its own file

2022-07-24 18:39:12 -06:00

statx.c

io_uring: make io_kiocb_to_cmd() typesafe

2022-08-12 17:01:00 -06:00

statx.h

io_uring: move statx handling to its own file

2022-07-24 18:39:11 -06:00

sync.c

io_uring: make io_kiocb_to_cmd() typesafe

2022-08-12 17:01:00 -06:00

sync.h

io_uring: split out fs related sync/fallocate functions

2022-07-24 18:39:11 -06:00

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: annotate offset timeout races

2023-08-11 12:08:24 +02:00

timeout.h

io_uring: remove unused return from io_disarm_next

2022-09-21 13:15:01 -06:00

uring_cmd.c

block/io_uring: pass in issue_flags for uring_cmd task_work handling

2023-04-06 12:10:51 +02:00

uring_cmd.h

io_uring: move uring_cmd handling to its own file

2022-07-24 18:39:11 -06:00

xattr.c

__io_setxattr(): constify path

2022-09-01 17:39:05 -04:00

xattr.h

io_uring: move xattr related opcodes to its own file

2022-07-24 18:39:11 -06:00