rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2657 jiffies s: 2953 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 2503 Comm: kworker/u8:6 Not tainted 6.11.0-syzkaller-11503-gd505d3593b52 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: writeback wb_workfn (flush-8:0)
RIP: 0010:rb_next+0x4/0xf0 lib/rbtree.c:493
Code: 42 80 3c 38 00 74 e3 48 89 df e8 17 da 40 f6 eb d9 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <41> 57 41 56 41 54 53 49 89 fc 49 bf 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc90000a185e0 EFLAGS: 00000006
RAX: ffffffff8bbe0891 RBX: ffff8880b872c9d8 RCX: ffff88802d35da00
RDX: 0000000000010100 RSI: ffff88801cf91340 RDI: ffff88801cf91340
RBP: dffffc0000000000 R08: ffffffff8bbe0858 R09: 1ffffffff2039f15
R10: dffffc0000000000 R11: fffffbfff2039f16 R12: 1ffff110039f2268
R13: ffff88801cf91340 R14: ffff8880b872c9d0 R15: 1ffff110170e593b
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005645c823d950 CR3: 000000007a6b2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rb_erase_cached include/linux/rbtree.h:124 [inline]
 timerqueue_del+0x89/0x100 lib/timerqueue.c:57
 __remove_hrtimer kernel/time/hrtimer.c:1118 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1671 [inline]
 __hrtimer_run_queues+0x3d0/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1037
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 9e a4 2f f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 03 42 94 f5 65 8b 05 24 15 35 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90000a18980 EFLAGS: 00000206
RAX: 538092423aff5700 RBX: 1ffff92000143134 RCX: ffffffff8170892a
RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: 0000000000000001
RBP: ffffc90000a18a10 R08: ffffffff9426e867 R09: 1ffffffff284dd0c
R10: dffffc0000000000 R11: fffffbfff284dd0d R12: dffffc0000000000
R13: 1ffff92000143130 R14: ffffc90000a189a0 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 ext4_finish_bio+0x75c/0xc50 fs/ext4/page-io.c:141
 ext4_end_bio+0x265/0x4d0
 blk_update_request+0x5e5/0x1160 block/blk-mq.c:923
 scsi_end_request+0x80/0x880 drivers/scsi/scsi_lib.c:631
 scsi_io_completion+0x1bd/0x430 drivers/scsi/scsi_lib.c:1067
 blk_complete_reqs block/blk-mq.c:1126 [inline]
 blk_done_softirq+0x100/0x150 block/blk-mq.c:1131
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 common_interrupt+0xb9/0xd0 arch/x86/kernel/irq.c:278
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:lock_is_held_type+0x13b/0x190
Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc900095e6748 EFLAGS: 00000206
RAX: 538092423aff5700 RBX: 0000000000000001 RCX: 0000000080000000
RDX: ffff88802d35da00 RSI: ffffffff8c0adbc0 RDI: ffffffff8c6100e0
RBP: 0000000000000004 R08: ffffffff8bc08fbe R09: 1ffffffff2039f15
R10: dffffc0000000000 R11: fffffbfff2039f16 R12: 0000000000000246
R13: ffff88802d35da00 R14: 00000000ffffffff R15: ffffffff8e937ee0
 xa_entry include/linux/xarray.h:1220 [inline]
 xas_find_marked+0x7b9/0x10e0 lib/xarray.c:1382
 find_get_entry mm/filemap.c:1994 [inline]
 filemap_get_folios_tag+0x2d8/0x890 mm/filemap.c:2257
 mpage_prepare_extent_to_map+0x5dc/0x1c80 fs/ext4/inode.c:2437
 ext4_do_writepages+0xc55/0x3d20 fs/ext4/inode.c:2677
 ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2813
 do_writepages+0x35d/0x870 mm/page-writeback.c:2683
 __writeback_single_inode+0x14f/0x10d0 fs/fs-writeback.c:1658
 writeback_sb_inodes+0x80c/0x1370 fs/fs-writeback.c:1954
 __writeback_inodes_wb+0x11b/0x260 fs/fs-writeback.c:2025
 wb_writeback+0x42f/0xbd0 fs/fs-writeback.c:2136
 wb_check_old_data_flush fs/fs-writeback.c:2240 [inline]
 wb_do_writeback fs/fs-writeback.c:2293 [inline]
 wb_workfn+0xba1/0x1090 fs/fs-writeback.c:2321
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>