Jens Axboe 65938e81df io_uring/kbuf: hold io_buffer_list reference over mmap ... commit 561e4f9451d65fc2f7eef564e0064373e3019793 upstream. If we look up the kbuf, ensure that it doesn't get unregistered until after we're done with it. Since we're inside mmap, we cannot safely use the io_uring lock. Rely on the fact that we can lookup the buffer list under RCU now and grab a reference to it, preventing it from being unregistered until we're done with it. The lookup returns the io_buffer_list directly with it referenced. Cc: stable@vger.kernel.org # v6.4+ Fixes: 5cf4f52e6d8a ("io_uring: free io_buffer_list entries via RCU") Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-04-10 16:36:03 +02:00
..
Makefile	…
advise.c	io_uring: always go async for unsupported fadvise flags	2023-01-29 15:18:26 -07:00
advise.h	…
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	…
fdinfo.c	io_uring/fdinfo: remove need for sqpoll lock for thread/pid retrieval	2023-11-28 17:19:52 +00:00
fdinfo.h	…
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-wq.c	io-wq: fully initialize wqe before calling cpuhp_state_add_instance_nocalls()	2023-10-05 14:11:18 -06:00
io-wq.h	io_uring: break out of iowq iopoll on teardown	2023-09-07 09:02:27 -06:00
io_uring.c	io_uring/kbuf: hold io_buffer_list reference over mmap	2024-04-10 16:36:03 +02:00
io_uring.h	io_uring/unix: drop usage of io_uring socket	2024-03-26 18:19:09 -04:00
kbuf.c	io_uring/kbuf: hold io_buffer_list reference over mmap	2024-04-10 16:36:03 +02:00
kbuf.h	io_uring/kbuf: hold io_buffer_list reference over mmap	2024-04-10 16:36:03 +02:00
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: fix mshot io-wq checks	2024-04-03 15:28:29 +02:00
net.h	io_uring: Add KASAN support for alloc_caches	2023-04-03 07:16:14 -06:00
nop.c	…
nop.h	…
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	…
poll.c	io_uring: fix poll_remove stalled req completion	2024-03-26 18:20:09 -04:00
poll.h	io_uring: avoid indirect function calls for the hottest task_work	2023-06-02 08:55:37 -06:00
refs.h	…
rsrc.c	io_uring: drop any code related to SCM_RIGHTS	2024-03-26 18:19:09 -04:00
rsrc.h	io_uring: drop any code related to SCM_RIGHTS	2024-03-26 18:19:09 -04:00
rw.c	io_uring/rw: ensure io->bytes_done is always initialized	2024-01-25 15:35:45 -08:00
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	…
sqpoll.c	io_uring/fdinfo: remove need for sqpoll lock for thread/pid retrieval	2023-11-28 17:19:52 +00:00
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	…
sync.c	io_uring: for requests that require async, force it	2023-01-29 15:18:26 -07:00
sync.h	…
tctx.c	io_uring: Add io_uring_setup flag to pre-register ring fd and never install it	2023-05-16 08:06:00 -06:00
tctx.h	io_uring: simplify __io_uring_add_tctx_node	2022-10-07 12:25:30 -06:00
timeout.c	io_uring: never overflow io_aux_cqe	2023-08-11 10:42:57 -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/cmd: fix breakage in SOCKET_URING_OP_SIOC* implementation	2023-12-20 17:01:52 +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	…