Hagar Hemdan fdacd09f2d io_uring: fix possible deadlock in io_register_iowq_max_workers() ... commit 73254a297c2dd094abec7c9efee32455ae875bdf upstream. The io_register_iowq_max_workers() function calls io_put_sq_data(), which acquires the sqd->lock without releasing the uring_lock. Similar to the commit 009ad9f0c6 ("io_uring: drop ctx->uring_lock before acquiring sqd->lock"), this can lead to a potential deadlock situation. To resolve this issue, the uring_lock is released before calling io_put_sq_data(), and then it is re-acquired after the function call. This change ensures that the locks are acquired in the correct order, preventing the possibility of a deadlock. Suggested-by: Maximilian Heyne <mheyne@amazon.de> Signed-off-by: Hagar Hemdan <hagarhem@amazon.com> Link: https://lore.kernel.org/r/20240604130527.3597-1-hagarhem@amazon.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-11-17 15:07:21 +01:00
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advise.c
advise.h
alloc_cache.h
cancel.c
cancel.h
epoll.c
epoll.h
fdinfo.c
fdinfo.h
filetable.c
filetable.h
fs.c
fs.h
io_uring.c	io_uring: fix possible deadlock in io_register_iowq_max_workers()	2024-11-17 15:07:21 +01:00
io_uring.h	io_uring/sqpoll: close race on waiting for sqring entries	2024-10-22 15:56:45 +02:00
io-wq.c	io_uring/io-wq: inherit cpuset of cgroup in io worker	2024-10-17 15:21:14 +02:00
io-wq.h
kbuf.c
kbuf.h
Makefile
msg_ring.c
msg_ring.h
net.c	io_uring/net: harden multishot termination case for recv	2024-10-17 15:22:05 +02:00
net.h
nop.c
nop.h
notif.c
notif.h
opdef.c
opdef.h
openclose.c
openclose.h
poll.c
poll.h
refs.h
rsrc.c
rsrc.h
rw.c	io_uring/rw: fix missing NOWAIT check for O_DIRECT start write	2024-11-08 16:26:47 +01:00
rw.h
slist.h
splice.c
splice.h
sqpoll.c	io_uring/sqpoll: do not put cpumask on stack	2024-10-17 15:21:15 +02:00
sqpoll.h
statx.c
statx.h
sync.c
sync.h
tctx.c
tctx.h
timeout.c	io_uring: fix io_match_task must_hold	2024-08-03 08:49:53 +02:00
timeout.h
uring_cmd.c
uring_cmd.h
xattr.c
xattr.h