syzbot

==================================================================
BUG: KCSAN: data-race in blk_mq_sched_dispatch_requests / blk_mq_sched_dispatch_requests

read-write to 0xffff888101bd8558 of 8 bytes by task 1400 on cpu 0:
 blk_mq_sched_dispatch_requests+0x80/0xf0 block/blk-mq-sched.c:333
 __blk_mq_run_hw_queue+0x7e/0x100 block/blk-mq.c:2020
 __blk_mq_delay_run_hw_queue+0x15b/0x370 block/blk-mq.c:2096
 blk_mq_run_hw_queue+0x180/0x320 block/blk-mq.c:2144
 blk_mq_sched_insert_requests+0x1cb/0x2a0 block/blk-mq-sched.c:493
 blk_mq_dispatch_plug_list+0x1e9/0x2c0 block/blk-mq.c:2604
 blk_mq_flush_plug_list+0x2ea/0x340 block/blk-mq.c:2646
 __blk_flush_plug+0x25a/0x2b0 block/blk-core.c:1153
 blk_finish_plug+0x44/0x60 block/blk-core.c:1177
 jbd2_journal_commit_transaction+0x1a11/0x30a0 fs/jbd2/commit.c:829
 kjournald2+0x253/0x460 fs/jbd2/journal.c:210
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

read-write to 0xffff888101bd8558 of 8 bytes by task 42 on cpu 1:
 blk_mq_sched_dispatch_requests+0x80/0xf0 block/blk-mq-sched.c:333
 __blk_mq_run_hw_queue+0x7e/0x100 block/blk-mq.c:2020
 blk_mq_run_work_fn+0x3d/0x50 block/blk-mq.c:2319
 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 arch/x86/entry/entry_64.S:306

value changed: 0x0000000000005097 -> 0x0000000000005098

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 42 Comm: kworker/1:1H Not tainted 6.0.0-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: kblockd blk_mq_run_work_fn
==================================================================