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Jens Axboe 845db023a8 ublk: don't issue uring_cmd from fallback task work 
When ublk_ch_uring_cmd_cb() runs as fallback task work (e.g., because
the submitting task is exiting), the command should not be issued as
current is a kworker, not the daemon task. This can cause io->task
to capture the wrong task in __ublk_fetch(), leading to a task
mismatch warning in ublk_uring_cmd_cancel_fn().

Check tw.cancel and return -ECANCELED instead of issuing the command
from fallback context.

Fixes: 3421c7f68b ("ublk: make sure io cmd handled in submitter task context")
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260501112312.947327-1-tom.leiming@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2026-05-01 05:25:02 -06:00
..
aoe Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
drbd drbd: use get_random_u64() where appropriate 2026-04-07 06:27:39 -06:00
mtip32xx block: switch ->getgeo() to struct gendisk 2025-08-13 02:59:29 -04:00
null_blk Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
rnbd Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
rnull configfs changes for v7.0 2026-02-12 14:01:38 -08:00
xen-blkback Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
zram zram: reject unrecognized type= values in recompress_store() 2026-04-18 00:10:55 -07:00
Kconfig rbd: stop selecting CRC32, CRYPTO, and CRYPTO_AES 2025-12-10 11:50:54 +01:00
Makefile rnull: move driver to separate directory 2025-09-02 05:23:56 -06:00
amiflop.c block: switch ->getgeo() to struct gendisk 2025-08-13 02:59:29 -04:00
ataflop.c treewide: Switch/rename to timer_delete[_sync]() 2025-04-05 10:30:12 +02:00
brd.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
floppy.c Revert "floppy: fix reference leak on platform_device_register() failure" 2026-04-23 05:07:37 -06:00
loop.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
n64cart.c block: move the nonrot flag to queue_limits 2024-06-19 07:58:28 -06:00
nbd.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ps3disk.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ps3vram.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
rbd.c rbd: fix null-ptr-deref when device_add_disk() fails 2026-04-22 01:40:23 +02:00
rbd_types.h
…
sunvdc.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
swim.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
swim3.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
swim_asm.S
…
ublk_drv.c ublk: don't issue uring_cmd from fallback task work 2026-05-01 05:25:02 -06:00
virtio_blk.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
xen-blkfront.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
z2ram.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
zloop.c zloop: remove irq-safe locking 2026-04-15 13:58:37 -06:00