shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-03-25 03:50:24 +09:00
Code Issues Packages Projects Releases Wiki Activity
Files
dbcd0909a1e2cdecd5abc3e6529c5cfa7d712d52
linux/io_uring
History
Jens Axboe b72952c8c3 io_uring/fdinfo: annotate racy sq/cq head/tail reads 
[ Upstream commit f024d3a8ded0d8d2129ae123d7a5305c29ca44ce ]

syzbot complains about the cached sq head read, and it's totally right.
But we don't need to care, it's just reading fdinfo, and reading the
CQ or SQ tail/head entries are known racy in that they are just a view
into that very instant and may of course be outdated by the time they
are reported.

Annotate both the SQ head and CQ tail read with data_race() to avoid
this syzbot complaint.

Link: https://lore.kernel.org/io-uring/6811f6dc.050a0220.39e3a1.0d0e.GAE@google.com/
Reported-by: syzbot+3e77fd302e99f5af9394@syzkaller.appspotmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-06-04 14:42:16 +02:00
..
advise.c
io_uring: always go async for unsupported fadvise flags
2023-01-29 15:18:26 -07:00
advise.h
io_uring: split out fadvise/madvise operations
2022-07-24 18:39:11 -06:00
alloc_cache.h
io_uring/rsrc: consolidate node caching
2023-04-12 12:09:41 -06:00
cancel.c
io_uring: use fget/fput consistently
2024-01-20 11:51:38 +01:00
cancel.h
io_uring/cancel: support opcode based lookup and cancelation
2023-07-17 10:05:48 -06:00
epoll.c
io_uring: undeprecate epoll_ctl support
2023-05-26 20:22:41 -06:00
epoll.h
io_uring: move epoll handler to its own file
2022-07-24 18:39:11 -06:00
fdinfo.c
io_uring/fdinfo: annotate racy sq/cq head/tail reads
2025-06-04 14:42:16 +02:00
fdinfo.h
io_uring: move fdinfo helpers to its own file
2022-07-24 18:39:12 -06:00
filetable.c
io_uring: drop any code related to SCM_RIGHTS
2024-03-26 18:19:09 -04:00
filetable.h
io_uring: add helpers to decode the fixed file file_ptr
2023-06-20 09:36:22 -06:00
fs.c
io_uring/fs: consider link->flags when getting path for LINKAT
2023-12-03 07:33:07 +01:00
fs.h
io_uring: split out filesystem related operations
2022-07-24 18:39:11 -06:00
io_uring.c
io_uring: ensure deferred completions are posted for multishot
2025-05-18 08:24:10 +02:00
io_uring.h
io_uring/kbuf: use vm_insert_pages() for mmap'ed pbuf ring
2025-03-22 12:50:45 -07:00
io-wq.c
io-wq: backoff when retrying worker creation
2025-03-22 12:50:43 -07:00
io-wq.h
io_uring: break out of iowq iopoll on teardown
2023-09-07 09:02:27 -06:00
kbuf.c
io_uring/kbuf: reject zero sized provided buffers
2025-04-25 10:45:26 +02:00
kbuf.h
io_uring/kbuf: use vm_insert_pages() for mmap'ed pbuf ring
2025-03-22 12:50:45 -07:00
Makefile
io_uring: add zc notification infrastructure
2022-07-24 18:41:06 -06:00
msg_ring.c
io_uring: use io_file_from_index in io_msg_grab_file
2023-06-20 09:36:22 -06:00
msg_ring.h
io_uring: get rid of double locking
2022-12-07 06:47:13 -07:00
net.c
io_uring/net: fix accept multishot handling
2025-04-25 10:45:54 +02:00
net.h
io_uring: Add KASAN support for alloc_caches
2023-04-03 07:16:14 -06:00
nop.c
io_uring: fail NOP if non-zero op flags is passed in
2024-06-12 11:11:18 +02:00
nop.h
io_uring: move nop into its own file
2022-07-24 18:39:11 -06:00
notif.c
io_uring/notif: add constant for ubuf_info flags
2023-04-15 14:21:04 -06:00
notif.h
io_uring/notif: add constant for ubuf_info flags
2023-04-15 14:21:04 -06:00
opdef.c
io_uring: Pass whole sqe to commands
2023-05-04 08:19:05 -06:00
opdef.h
io_uring: Split io_issue_def struct
2023-01-29 15:17:41 -07:00
openclose.c
io_uring: correct check for O_TMPFILE
2023-08-07 12:34:23 -06:00
openclose.h
io_uring: split out fixed file installation and removal
2022-07-24 18:39:16 -06:00
poll.c
io_uring/net: don't retry connect operation on EPOLLERR
2025-02-17 09:40:36 +01:00
poll.h
io_uring: avoid indirect function calls for the hottest task_work
2023-06-02 08:55:37 -06:00
refs.h
io_uring: always do atomic put from iowq
2025-05-02 07:50:57 +02:00
rsrc.c
io_uring: unify io_pin_pages()
2025-03-22 12:50:45 -07:00
rsrc.h
io_uring: drop any code related to SCM_RIGHTS
2024-03-26 18:19:09 -04:00
rw.c
io_uring/rw: commit provided buffer state on async
2025-02-17 09:40:37 +01:00
rw.h
io_uring: avoid indirect function calls for the hottest task_work
2023-06-02 08:55:37 -06:00
slist.h
io_uring: silence variable ‘prev’ set but not used warning
2023-03-09 10:10:58 -07:00
splice.c
io_uring/splice: use fput() directly
2023-08-10 10:24:25 -06:00
splice.h
io_uring: split out splice related operations
2022-07-24 18:39:11 -06:00
sqpoll.c
io_uring/sqpoll: fix sqpoll error handling races
2025-01-02 10:32:10 +01:00
sqpoll.h
io_uring/sqpoll: fix io-wq affinity when IORING_SETUP_SQPOLL is used
2023-08-16 13:40:28 -06:00
statx.c
io_uring: for requests that require async, force it
2023-01-29 15:18:26 -07:00
statx.h
io_uring: move statx handling to its own file
2022-07-24 18:39:11 -06:00
sync.c
io_uring: for requests that require async, force it
2023-01-29 15:18:26 -07:00
sync.h
io_uring: split out fs related sync/fallocate functions
2022-07-24 18:39:11 -06:00
tctx.c
io_uring/tctx: work around xa_store() allocation error issue
2024-12-14 20:00:17 +01:00
tctx.h
io_uring: simplify __io_uring_add_tctx_node
2022-10-07 12:25:30 -06:00
timeout.c
io_uring/timeout: fix multishot updates
2025-01-17 13:36:19 +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/uring_cmd: use cached cmd_op in io_uring_cmd_sock()
2025-02-08 09:52:33 +01:00
uring_cmd.h
io_uring: Remove unnecessary BUILD_BUG_ON
2023-05-04 08:19:05 -06:00
xattr.c
io_uring: for requests that require async, force it
2023-01-29 15:18:26 -07:00
xattr.h
io_uring: move xattr related opcodes to its own file
2022-07-24 18:39:11 -06:00