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linux/block
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Ming Lei 73d964ce4b 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 15:19:26 +01:00
..
partitions
block: fix conversion of GPT partition name to 7-bit
2025-03-13 12:53:15 +01:00
badblocks.c
…
bdev.c
block: fix race between set_blocksize and read paths
2025-12-07 06:12:14 +09:00
bfq-cgroup.c
block, bfq: fix re-introduced UAF in bic_set_bfqq()
2025-03-28 21:59:02 +01:00
bfq-iosched.c
block, bfq: fix bfqq uaf in bfq_limit_depth()
2025-03-07 16:56:41 +01:00
bfq-iosched.h
block, bfq: split sync bfq_queues on a per-actuator basis
2025-03-07 16:56:41 +01:00
bfq-wf2q.c
…
bio-integrity.c
block: initialize integrity buffer to zero before writing it to media
2024-08-03 08:48:53 +02:00
bio.c
scsi: sd_zbc: block: Respect bio vector limits for REPORT ZONES buffer
2025-05-22 14:10:06 +02:00
blk-cgroup-fc-appid.c
…
blk-cgroup-rwstat.c
…
blk-cgroup-rwstat.h
…
blk-cgroup.c
blk-cgroup: support to track if policy is online
2025-04-25 10:44:03 +02:00
blk-cgroup.h
blk-cgroup: support to track if policy is online
2025-04-25 10:44:03 +02:00
blk-core.c
block: reject invalid operation in submit_bio_noacct
2025-08-28 16:26:10 +02:00
blk-crypto-fallback.c
blk-crypto: fix missing blktrace bio split events
2025-10-19 16:23:12 +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-integrity: register sysfs attributes on struct device
2024-10-17 15:21:48 +02:00
blk-ioc.c
…
blk-iocost.c
blk-iocost: do not WARN if iocg was already offlined
2025-04-25 10:44:03 +02:00
blk-iolatency.c
…
blk-ioprio.c
…
blk-ioprio.h
…
blk-lib.c
…
blk-map.c
block: fix sanity checks in blk_rq_map_user_bvec
2024-11-08 16:26:45 +01:00
blk-merge.c
block: fix bio_split_rw_at to take zone_write_granularity into account
2024-12-14 19:53:15 +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-rdma.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 11:56:27 +02:00
blk-mq-tag.c
block: Fix lockdep warning in blk_mq_mark_tag_wait
2024-08-29 17:30:33 +02:00
blk-mq-tag.h
…
blk-mq-virtio.c
…
blk-mq.c
blk-mq: setup queue ->tag_set before initializing hctx
2026-01-11 15:19:26 +01:00
blk-mq.h
block: fix ordering between checking BLK_MQ_S_STOPPED request adding
2024-12-14 19:54:04 +01:00
blk-pm.c
…
blk-pm.h
…
blk-rq-qos.c
blk-rq-qos: fix crash on rq_qos_wait vs. rq_qos_wake_function race
2024-10-22 15:56:45 +02:00
blk-rq-qos.h
…
blk-settings.c
block: use int to store blk_stack_limits() return value
2025-10-15 11:56:27 +02:00
blk-stat.c
block: prevent division by zero in blk_rq_stat_sum()
2024-04-13 13:05:12 +02:00
blk-stat.h
…
blk-sysfs.c
block: fix uaf for flush rq while iterating tags
2025-01-23 17:17:16 +01:00
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
2025-12-07 06:12:14 +09:00
blk.h
blk-integrity: register sysfs attributes on struct device
2024-10-17 15:21:48 +02:00
bounce.c
…
bsg-lib.c
…
bsg.c
…
disk-events.c
…
elevator.c
block: Fix elevator_get_default() checking for NULL q->tag_set
2024-11-17 15:07:20 +01:00
elevator.h
…
fops.c
block: fix race between set_blocksize and read paths
2025-12-07 06:12:14 +09:00
genhd.c
block: rate-limit capacity change info log
2026-01-11 15:18:50 +01:00
holder.c
…
ioctl.c
block: fix race between set_blocksize and read paths
2025-12-07 06:12:14 +09:00
ioprio.c
…
Kconfig
…
Kconfig.iosched
…
kyber-iosched.c
…
Makefile
…
mq-deadline.c
block/mq-deadline: Fix the tag reservation code
2024-08-14 13:53:02 +02:00
opal_proto.h
block: sed-opal: handle empty atoms when parsing response
2024-03-26 18:20:26 -04:00
sed-opal.c
block: sed-opal: handle empty atoms when parsing response
2024-03-26 18:20:26 -04:00
t10-pi.c
…