forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions
linux-uconsole/drivers/block
History
Sun Ke 7ce9e00a4a nbd: add a flush_workqueue in nbd_start_device 
[ Upstream commit 5c0dd228b5 ]

When kzalloc fail, may cause trying to destroy the
workqueue from inside the workqueue.

If num_connections is m (2 < m), and NO.1 ~ NO.n
(1 < n < m) kzalloc are successful. The NO.(n + 1)
failed. Then, nbd_start_device will return ENOMEM
to nbd_start_device_ioctl, and nbd_start_device_ioctl
will return immediately without running flush_workqueue.
However, we still have n recv threads. If nbd_release
run first, recv threads may have to drop the last
config_refs and try to destroy the workqueue from
inside the workqueue.

To fix it, add a flush_workqueue in nbd_start_device.

Fixes: e9e006f5fc ("nbd: fix max number of supported devs")
Signed-off-by: Sun Ke <sunke32@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-24 08:34:39 +01:00
..
aoe drivers/block/aoe/aoedev: NULL check is not needed for mempool_destroy 2018-08-08 09:17:20 -06:00
drbd signal: Allow cifs and drbd to receive their terminating signals 2020-01-27 14:51:05 +01:00
mtip32xx Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
paride block: paride: pd: mark expected switch fall-throughs 2018-08-09 10:17:38 -06:00
rsxx rsxx: add missed destroy_workqueue calls in remove 2019-12-13 08:51:06 +01:00
xen-blkback xen/blkback: Avoid unmapping unmapped grant pages 2020-01-09 10:19:09 +01:00
zram zram: fix race between backing_dev_show and backing_dev_store 2019-11-06 13:05:10 +01:00
amiflop.c amiflop: clean up on errors during setup 2019-12-01 09:16:25 +01:00
ataflop.c ataflop: fix error handling during setup 2018-11-13 11:08:20 -08:00
brd.c brd: re-enable __GFP_HIGHMEM in brd_insert_page() 2019-05-25 18:23:24 +02:00
cryptoloop.c block: cryptoloop - Fix build warning 2017-09-26 07:41:22 -06:00
DAC960.c block/DAC960.c: make some arrays static const, shrinks object size 2018-08-21 11:00:17 -06:00
DAC960.h DAC960: don't use block layer bounce buffers 2018-05-11 15:07:54 -06:00
floppy.c floppy: fix usercopy direction 2019-09-21 07:17:14 +02:00
Kconfig cdrom: Use struct scsi_sense_hdr internally 2018-08-02 15:22:39 -06:00
loop.c loop: fix no-unmap write-zeroes request behavior 2019-12-31 16:35:32 +01:00
loop.h block/loop: Use global lock for ioctl() operation. 2019-01-22 21:40:36 +01:00
Makefile block: Rename the null_blk_mod kernel module back into null_blk 2018-07-24 09:54:36 -06:00
nbd.c nbd: add a flush_workqueue in nbd_start_device 2020-02-24 08:34:39 +01:00
null_blk.h null_blk: fix zoned support for non-rq based operation 2018-09-12 18:21:11 -06:00
null_blk_main.c block: null_blk: fix race condition for null_del_dev 2019-07-26 09:14:07 +02:00
null_blk_zoned.c null_blk: fix zoned support for non-rq based operation 2018-09-12 18:21:11 -06:00
pktcdvd.c pktcdvd: remove warning on attempting to register non-passthrough dev 2019-10-07 18:57:15 +02:00
ps3disk.c ps3disk: handle highmem pages 2018-05-11 15:08:03 -06:00
ps3vram.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
rbd.c rbd: clear ->xferred on error from rbd_obj_issue_copyup() 2020-01-27 14:50:30 +01:00
rbd_types.h
skd_main.c skd: fixup usage of legacy IO API 2019-12-01 09:16:20 +01:00
skd_s1120.h skd: Use __packed only when needed 2017-08-18 08:45:29 -06:00
sunvdc.c sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN 2019-02-12 19:47:03 +01:00
swim.c swim: fix cleanup on setup error 2018-11-13 11:08:20 -08:00
swim3.c block/swim3: Fix -EBUSY error when re-opening device after unmount 2019-02-12 19:47:18 +01:00
swim_asm.S
sx8.c block: sanitize blk_get_request calling conventions 2018-05-14 08:55:12 -06:00
umem.c block: Fix a race between the cgroup code and request queue initialization 2018-02-28 12:23:35 -07:00
umem.h
virtio_blk.c virtio-blk: limit number of hw queues by nr_cpu_ids 2019-05-10 17:54:09 +02:00
xen-blkfront.c xen/blkfront: Adjust indentation in xlvbd_alloc_gendisk 2020-01-23 08:21:36 +01:00
xsysace.c xsysace: Fix error handling in ace_setup 2019-05-08 07:21:51 +02:00
z2ram.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00