hrtimer: interrupt took 480972096 ns
sched: DL replenish lagged too much
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 ticks this GP) idle=5eac/1/0x4000000000000000 softirq=29245/29245 fqs=0
rcu: 	(t=22749 jiffies g=20877 q=107 ncpus=1)
rcu: rcu_preempt kthread timer wakeup didn't happen for 22748 jiffies! g20877 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=14158
rcu: rcu_preempt kthread starved for 22749 jiffies! g20877 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:28824 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6878
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
CPU: 0 UID: 0 PID: 1040 Comm: kworker/u4:7 Not tainted 6.15.0-syzkaller-13655-gbdc7f8c5adad #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: writeback wb_workfn (flush-8:0)
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 fb 6b 5f f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> d3 5a 28 f6 65 8b 05 bc 63 34 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90002526060 EFLAGS: 00000206
RAX: 26a42c60e2c79400 RBX: 0000000000000a06 RCX: 26a42c60e2c79400
RDX: 0000000000000007 RSI: ffffffff8d981621 RDI: 0000000000000001
RBP: ffffc900025260f0 R08: ffffffff8fa112f7 R09: 1ffffffff1f4225e
R10: dffffc0000000000 R11: fffffbfff1f4225f R12: dffffc0000000000
R13: 0000000000000a06 R14: ffff888034b94800 R15: 1ffff920004a4c0c
FS:  0000000000000000(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa555ec7e10 CR3: 000000000df38000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 ata_scsi_queuecmd+0x3f0/0x5c0 drivers/ata/libata-scsi.c:4403
 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1626 [inline]
 scsi_queue_rq+0x1c91/0x2cc0 drivers/scsi/scsi_lib.c:1868
 blk_mq_dispatch_rq_list+0x4c0/0x1900 block/blk-mq.c:2118
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline]
 blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline]
 __blk_mq_sched_dispatch_requests+0xda4/0x1570 block/blk-mq-sched.c:307
 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329
 blk_mq_run_hw_queue+0x404/0x4f0 block/blk-mq.c:2356
 blk_mq_dispatch_list+0xd0c/0xe00 include/linux/spinlock.h:-1
 blk_mq_flush_plug_list+0x469/0x550 block/blk-mq.c:2965
 blk_add_rq_to_plug+0x175/0x450 block/blk-mq.c:1388
 blk_mq_submit_bio+0xbd3/0x22d0 block/blk-mq.c:3208
 __submit_bio+0x207/0x5a0 block/blk-core.c:635
 __submit_bio_noacct_mq block/blk-core.c:722 [inline]
 submit_bio_noacct_nocheck+0x505/0xb50 block/blk-core.c:751
 ext4_io_submit+0xe0/0x150 fs/ext4/page-io.c:404
 ext4_do_writepages+0x12d8/0x3f30 fs/ext4/inode.c:2883
 ext4_writepages+0x205/0x350 fs/ext4/inode.c:2953
 do_writepages+0x32b/0x550 mm/page-writeback.c:2636
 __writeback_single_inode+0x145/0xff0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x6b5/0x1000 fs/fs-writeback.c:1976
 __writeback_inodes_wb+0x111/0x240 fs/fs-writeback.c:2047
 wb_writeback+0x44f/0xaf0 fs/fs-writeback.c:2158
 wb_check_old_data_flush fs/fs-writeback.c:2262 [inline]
 wb_do_writeback fs/fs-writeback.c:2315 [inline]
 wb_workfn+0xaef/0xef0 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>