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BUG: KCSAN: data-race in blk_mq_dispatch_rq_list / blk_mq_dispatch_rq_list

read to 0xffff888100fdd2f8 of 4 bytes by task 44 on cpu 1:
 blk_mq_update_dispatch_busy block/blk-mq.c:1920 [inline]
 blk_mq_dispatch_rq_list+0xcb3/0x10a0 block/blk-mq.c:2171
 __blk_mq_sched_dispatch_requests+0x1ce/0xd20 block/blk-mq-sched.c:301
 blk_mq_sched_dispatch_requests+0x78/0xe0 block/blk-mq-sched.c:331
 blk_mq_run_hw_queue+0x298/0x4c0 block/blk-mq.c:2286
 blk_mq_run_hw_queues+0x15b/0x1e0 block/blk-mq.c:2335
 scsi_starved_list_run drivers/scsi/scsi_lib.c:426 [inline]
 scsi_run_queue+0x4aa/0x5b0 drivers/scsi/scsi_lib.c:449
 scsi_requeue_run_queue+0x25/0x30 drivers/scsi/scsi_lib.c:462
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x5b8/0xa40 kernel/workqueue.c:2706
 worker_thread+0x525/0x730 kernel/workqueue.c:2787
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

write to 0xffff888100fdd2f8 of 4 bytes by task 77 on cpu 0:
 blk_mq_dispatch_rq_list+0xf55/0x10a0
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
 blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
 __blk_mq_sched_dispatch_requests+0x5ec/0xd20 block/blk-mq-sched.c:309
 blk_mq_sched_dispatch_requests+0x78/0xe0 block/blk-mq-sched.c:331
 blk_mq_run_work_fn+0x65/0xe0 block/blk-mq.c:2456
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x5b8/0xa40 kernel/workqueue.c:2706
 worker_thread+0x525/0x730 kernel/workqueue.c:2787
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

value changed: 0x00000009 -> 0x00000007

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 77 Comm: kworker/0:1H Not tainted 6.8.0-rc2-syzkaller-00055-g6764c317b6bb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: kblockd blk_mq_run_work_fn
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