Jens Axboe 55c22375cb io_uring/sqpoll: work around a potential audit memory leak ... [ Upstream commit c4ce0ab27646f4206a9eb502d6fe45cb080e1cae ] kmemleak complains that there's a memory leak related to connect handling: unreferenced object 0xffff0001093bdf00 (size 128): comm "iou-sqp-455", pid 457, jiffies 4294894164 hex dump (first 32 bytes): 02 00 fa ea 7f 00 00 01 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 2e481b1a): [<00000000c0a26af4>] kmemleak_alloc+0x30/0x38 [<000000009c30bb45>] kmalloc_trace+0x228/0x358 [<000000009da9d39f>] __audit_sockaddr+0xd0/0x138 [<0000000089a93e34>] move_addr_to_kernel+0x1a0/0x1f8 [<000000000b4e80e6>] io_connect_prep+0x1ec/0x2d4 [<00000000abfbcd99>] io_submit_sqes+0x588/0x1e48 [<00000000e7c25e07>] io_sq_thread+0x8a4/0x10e4 [<00000000d999b491>] ret_from_fork+0x10/0x20 which can can happen if: 1) The command type does something on the prep side that triggers an audit call. 2) The thread hasn't done any operations before this that triggered an audit call inside ->issue(), where we have audit_uring_entry() and audit_uring_exit(). Work around this by issuing a blanket NOP operation before the SQPOLL does anything. Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-27 13:46:14 +02:00
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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 io_cqring_wait() not restoring sigmask on get_timespec64() failure	2024-04-27 17:07:04 +02:00
io_uring.h	io_uring: use the right type for work_llist empty check	2024-06-12 11:03:05 +02:00
io-wq.c
io-wq.h
kbuf.c	io_uring: check for non-NULL file pointer in io_file_can_poll()	2024-06-21 14:35:42 +02:00
kbuf.h
Makefile
msg_ring.c
msg_ring.h
net.c
net.h
nop.c	io_uring: fail NOP if non-zero op flags is passed in	2024-06-12 11:02:55 +02:00
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
rw.h
slist.h
splice.c
splice.h
sqpoll.c	io_uring/sqpoll: work around a potential audit memory leak	2024-06-27 13:46:14 +02:00
sqpoll.h
statx.c
statx.h
sync.c
sync.h
tctx.c
tctx.h
timeout.c
timeout.h
uring_cmd.c
uring_cmd.h
xattr.c
xattr.h