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BUG: KCSAN: data-race in blk_mq_request_bypass_insert / blk_mq_run_hw_queue

write to 0xffff8881020b7010 of 8 bytes by task 9 on cpu 0:
 __list_add include/linux/list.h:72 [inline]
 list_add include/linux/list.h:88 [inline]
 blk_mq_request_bypass_insert+0x6a/0x140 block/blk-mq.c:2365
 blk_mq_sched_insert_request+0xfd/0x220 block/blk-mq-sched.c:441
 blk_mq_requeue_work+0x39b/0x400 block/blk-mq.c:1318
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

read to 0xffff8881020b7010 of 8 bytes by task 1406 on cpu 1:
 list_empty_careful include/linux/list.h:329 [inline]
 blk_mq_hctx_has_pending block/blk-mq.c:101 [inline]
 blk_mq_run_hw_queue+0x19b/0x310 block/blk-mq.c:2103
 blk_mq_sched_insert_requests+0x1cb/0x2a0 block/blk-mq-sched.c:493
 blk_mq_dispatch_plug_list+0x1e9/0x2c0 block/blk-mq.c:2603
 blk_mq_flush_plug_list+0x2ea/0x340 block/blk-mq.c:2645
 __blk_flush_plug+0x25a/0x2b0 block/blk-core.c:1244
 blk_finish_plug+0x44/0x60 block/blk-core.c:1268
 jbd2_journal_commit_transaction+0x1390/0x2480 fs/jbd2/commit.c:825
 kjournald2+0x1af/0x370 fs/jbd2/journal.c:213
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

value changed: 0xffff8881020b7008 -> 0xffff888103492448

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1406 Comm: jbd2/sda1-8 Not tainted 5.18.0-rc2-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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