Ming Lei 25466e5b4b blk-mq: setup queue ->tag_set before initializing hctx ... commit c25c0c9035 upstream. Commit 7b815817aa ("blk-mq: add helper for checking if one CPU is mapped to specified hctx") needs to check queue mapping via tag set in hctx's cpuhp handler. However, q->tag_set may not be setup yet when the cpuhp handler is enabled, then kernel oops is triggered. Fix the issue by setup queue tag_set before initializing hctx. Cc: stable@vger.kernel.org Reported-and-tested-by: Rick Koch <mr.rickkoch@gmail.com> Closes: https://lore.kernel.org/linux-block/CANa58eeNDozLaBHKPLxSAhEy__FPfJT_F71W=sEQw49UCrC9PQ@mail.gmail.com Fixes: 7b815817aa ("blk-mq: add helper for checking if one CPU is mapped to specified hctx") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: John Garry <john.g.garry@oracle.com> Link: https://lore.kernel.org/r/20241014005115.2699642-1-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2026-01-11 15:22:33 +01:00
..
partitions	block: fix conversion of GPT partition name to 7-bit	2025-03-13 12:58:27 +01:00
badblocks.c
bdev.c	block: fix race between set_blocksize and read paths	2025-10-23 16:16:38 +02:00
bfq-cgroup.c
bfq-iosched.c	block, bfq: fix waker_bfqq UAF after bfq_split_bfqq()	2025-01-17 13:36:25 +01:00
bfq-iosched.h
bfq-wf2q.c
bio-integrity.c
bio.c	scsi: sd_zbc: block: Respect bio vector limits for REPORT ZONES buffer	2025-05-22 14:12:22 +02:00
blk-cgroup-fc-appid.c
blk-cgroup-rwstat.c
blk-cgroup-rwstat.h
blk-cgroup.c	blk-cgroup: fix possible deadlock while configuring policy	2025-11-24 10:29:22 +01:00
blk-cgroup.h
blk-core.c	block: reject invalid operation in submit_bio_noacct	2025-08-28 16:28:40 +02:00
blk-crypto-fallback.c	blk-crypto: fix missing blktrace bio split events	2025-10-19 16:30:48 +02:00
blk-crypto-internal.h
blk-crypto-profile.c
blk-crypto-sysfs.c
blk-crypto.c
blk-flush.c
blk-ia-ranges.c
blk-integrity.c
blk-ioc.c
blk-iocost.c	blk-iocost: Avoid using clamp() on inuse in __propagate_weights()	2024-12-19 18:11:34 +01:00
blk-iolatency.c
blk-ioprio.c
blk-ioprio.h
blk-lib.c
blk-map.c
blk-merge.c	block: fix bio_split_rw_at to take zone_write_granularity into account	2024-12-09 10:31:45 +01:00
blk-mq-cpumap.c
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-sched.c
blk-mq-sched.h
blk-mq-sysfs.c	blk-mq: check kobject state_in_sysfs before deleting in blk_mq_unregister_hctx	2025-10-15 11:57:50 +02:00
blk-mq-tag.c
blk-mq-virtio.c
blk-mq.c	blk-mq: setup queue ->tag_set before initializing hctx	2026-01-11 15:22:33 +01:00
blk-mq.h	block: fix ordering between checking BLK_MQ_S_STOPPED request adding	2024-12-09 10:32:50 +01:00
blk-pm.c
blk-pm.h
blk-rq-qos.c
blk-rq-qos.h
blk-settings.c	block: use int to store blk_stack_limits() return value	2025-10-15 11:57:51 +02:00
blk-stat.c
blk-stat.h
blk-sysfs.c	block: fix kobject leak in blk_unregister_queue	2025-07-24 08:53:17 +02:00
blk-throttle.c
blk-throttle.h
blk-timeout.c
blk-wbt.c
blk-wbt.h
blk-zoned.c	block: fix race between set_blocksize and read paths	2025-10-23 16:16:38 +02:00
blk.h
bounce.c
bsg-lib.c
bsg.c
disk-events.c
early-lookup.c
elevator.c	block: Fix elevator_get_default() checking for NULL q->tag_set	2024-11-17 15:08:56 +01:00
elevator.h
fops.c	block: fix race between set_blocksize and read paths	2025-10-23 16:16:38 +02:00
genhd.c	block: rate-limit capacity change info log	2026-01-11 15:21:55 +01:00
holder.c
ioctl.c	block: fix race between set_blocksize and read paths	2025-10-23 16:16:38 +02:00
ioprio.c
Kconfig
Kconfig.iosched
kyber-iosched.c
Makefile
mq-deadline.c
opal_proto.h
sed-opal.c
t10-pi.c