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linux/io_uring
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Wojciech Lukowicz ac48787f58 io_uring: fix memory leak when removing provided buffers 
[ Upstream commit b4a72c0589 ]

When removing provided buffers, io_buffer structs are not being disposed
of, leading to a memory leak. They can't be freed individually, because
they are allocated in page-sized groups. They need to be added to some
free list instead, such as io_buffers_cache. All callers already hold
the lock protecting it, apart from when destroying buffers, so had to
extend the lock there.

Fixes: cc3cec8367 ("io_uring: speedup provided buffer handling")
Signed-off-by: Wojciech Lukowicz <wlukowicz01@gmail.com>
Link: https://lore.kernel.org/r/20230401195039.404909-2-wlukowicz01@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-04-13 16:55:31 +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: make io_kiocb_to_cmd() typesafe
2022-08-12 17:01:00 -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: 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 memory leak when removing provided buffers
2023-04-13 16:55:31 +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: let target know allocated index
2023-03-22 13:34:06 +01:00
msg_ring.h
io_uring: move msg_ring into its own file
2022-07-24 18:39:12 -06:00
net.c
io_uring/net: avoid sending -ECONNABORTED on repeated connection requests
2023-03-30 12:49:25 +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: dont remove file from msg_ring reqs
2022-12-31 13:33:12 +01:00
opdef.h
io_uring: dont remove file from msg_ring reqs
2022-12-31 13:33:12 +01:00
openclose.c
io_uring: make io_kiocb_to_cmd() typesafe
2022-08-12 17:01:00 -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/poll: clear single/double poll flags on poll arming
2023-04-06 12:10:51 +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: fix null-ptr-deref in io_file_bitmap_get()
2023-03-30 12:49:25 +02:00
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
audit, io_uring, io-wq: Fix memory leak in io_sq_thread() and io_wqe_worker()
2022-08-04 08:33:54 -06:00
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: remove io_req_tw_post_queue
2023-02-01 08:34:41 +01:00
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