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BUG: KCSAN: data-race in dd_has_work / deadline_remove_request

write to 0xffff888101db1688 of 8 bytes by task 6274 on cpu 0:
 __list_del include/linux/list.h:112 [inline]
 __list_del_entry include/linux/list.h:135 [inline]
 list_del_init include/linux/list.h:204 [inline]
 deadline_remove_request+0x58/0x190 block/mq-deadline.c:173
 deadline_move_request block/mq-deadline.c:249 [inline]
 __dd_dispatch_request+0x422/0x4d0 block/mq-deadline.c:465
 dd_dispatch_request+0x1d0/0x2b0 block/mq-deadline.c:531
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:147 [inline]
 blk_mq_do_dispatch_sched+0x1e7/0x6d0 block/blk-mq-sched.c:212
 __blk_mq_sched_dispatch_requests+0x1ca/0x270
 blk_mq_sched_dispatch_requests+0x9f/0x110 block/blk-mq-sched.c:358
 __blk_mq_run_hw_queue+0xc1/0x140 block/blk-mq.c:1761
 __blk_mq_delay_run_hw_queue+0x199/0x360 block/blk-mq.c:1838
 blk_mq_run_hw_queue+0x231/0x260 block/blk-mq.c:1891
 blk_mq_sched_insert_requests+0x130/0x200 block/blk-mq-sched.c:508
 blk_mq_flush_plug_list+0x372/0x460 block/blk-mq.c:2268
 blk_flush_plug+0x252/0x2b0 block/blk-core.c:1617
 blk_finish_plug+0x44/0x60 block/blk-core.c:1635
 read_pages+0x34b/0x5f0 mm/readahead.c:149
 page_cache_ra_unbounded+0x3d2/0x430 mm/readahead.c:238
 ondemand_readahead+0x4f8/0x700
 page_cache_sync_ra+0xaf/0xe0 mm/readahead.c:579
 page_cache_sync_readahead include/linux/pagemap.h:930 [inline]
 filemap_get_pages mm/filemap.c:2541 [inline]
 filemap_read+0x3d8/0x1720 mm/filemap.c:2624
 generic_file_read_iter+0x75/0x2c0 mm/filemap.c:2775
 ext4_file_read_iter+0x1db/0x290
 call_read_iter include/linux/fs.h:2155 [inline]
 generic_file_splice_read+0x24f/0x330 fs/splice.c:311
 do_splice_to fs/splice.c:796 [inline]
 splice_direct_to_actor+0x2aa/0x650 fs/splice.c:870
 do_splice_direct+0x106/0x190 fs/splice.c:979
 do_sendfile+0x675/0xc40 fs/read_write.c:1245
 __do_sys_sendfile64 fs/read_write.c:1310 [inline]
 __se_sys_sendfile64 fs/read_write.c:1296 [inline]
 __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888101db1688 of 8 bytes by interrupt on cpu 1:
 list_empty_careful include/linux/list.h:319 [inline]
 dd_has_work_for_prio block/mq-deadline.c:836 [inline]
 dd_has_work+0x144/0x260 block/mq-deadline.c:846
 blk_mq_sched_has_work block/blk-mq-sched.h:84 [inline]
 blk_mq_hctx_has_pending block/blk-mq.c:101 [inline]
 blk_mq_run_hw_queue+0x1a4/0x260 block/blk-mq.c:1887
 __blk_mq_sched_restart+0x21/0x30 block/blk-mq-sched.c:73
 blk_mq_sched_restart block/blk-mq-sched.h:37 [inline]
 __blk_mq_free_request+0x18d/0x1b0 block/blk-mq.c:592
 blk_mq_free_request+0x226/0x2a0 block/blk-mq.c:622
 __blk_mq_end_request+0x284/0x2b0 block/blk-mq.c:798
 blk_mq_end_request+0x37/0x50 block/blk-mq.c:807
 blk_flush_complete_seq+0x37b/0x680 block/blk-flush.c:204
 flush_end_io+0x4f5/0x570 block/blk-flush.c:259
 __blk_mq_end_request+0x294/0x2b0 block/blk-mq.c:796
 scsi_end_request+0x285/0x440 drivers/scsi/scsi_lib.c:577
 scsi_io_completion+0x101/0x10d0 drivers/scsi/scsi_lib.c:939
 scsi_finish_command+0x1c0/0x1d0 drivers/scsi/scsi.c:207
 scsi_complete+0x1a5/0x1e0 drivers/scsi/scsi_lib.c:1442
 blk_complete_reqs block/blk-mq.c:868 [inline]
 blk_done_softirq+0x92/0xc0 block/blk-mq.c:873
 __do_softirq+0x158/0x2de kernel/softirq.c:558
 __irq_exit_rcu kernel/softirq.c:636 [inline]
 irq_exit_rcu+0x37/0x70 kernel/softirq.c:648
 common_interrupt+0x9f/0xc0 arch/x86/kernel/irq.c:240
 asm_common_interrupt+0x1e/0x40
 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
 arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
 acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline]
 acpi_idle_do_entry drivers/acpi/processor_idle.c:553 [inline]
 acpi_idle_enter+0x282/0x300 drivers/acpi/processor_idle.c:688
 cpuidle_enter_state+0x2b4/0x7d0 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:158 [inline]
 cpuidle_idle_call kernel/sched/idle.c:239 [inline]
 do_idle+0x1b2/0x250 kernel/sched/idle.c:306
 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:403
 secondary_startup_64_no_verify+0xb1/0xbb

value changed: 0xffff888102a42208 -> 0xffff888101db1680

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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