INFO: task syz-executor:14909 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D
 stack:22200 pid:14909 tgid:14909 ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7326
 wb_wait_for_completion+0x3b2/0x700 fs/fs-writeback.c:227
 sync_inodes_sb+0x224/0xbf0 fs/fs-writeback.c:3030
 sync_filesystem+0x17a/0x230 fs/sync.c:64
 generic_shutdown_super+0x77/0x2d0 fs/super.c:626
 kill_block_super+0x44/0x90 fs/super.c:1665
 xfs_kill_sb+0x15/0x50 fs/xfs/xfs_super.c:2286
 deactivate_locked_super+0xbc/0x130 fs/super.c:477
 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0cb0f9f097
RSP: 002b:00007ffc9c45ded8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f0cb10332ca RCX: 00007f0cb0f9f097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc9c45df90
RBP: 00007ffc9c45df90 R08: 00007ffc9c45ef90 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc9c45f020
R13: 00007f0cb10332ca R14: 00000000000a9337 R15: 00007ffc9c45f060
 </TASK>

Showing all locks held in the system:
1 lock held by ksoftirqd/1/23:
 #0: ffff8880b873b160 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:667
3 locks held by kworker/1:2/30:
 #0: ffff8880222cb140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #0: ffff8880222cb140 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
 #1: ffff8880b8724440 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0 kernel/sched/psi.c:933
 #2: ffff8880b8726058 (&base->lock){-.-.}-{2:2}, at: lock_timer_base kernel/time/timer.c:1004 [inline]
 #2: ffff8880b8726058 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x1a9/0xed0 kernel/time/timer.c:1085
1 lock held by khungtaskd/32:
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
6 locks held by kworker/u8:5/59:
2 locks held by getty/5373:
 #0: ffff888035eff0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000322b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:7/5773:
 #0: ffff88801b02b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #0: ffff88801b02b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
 #1: ffff8880b8724440 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0 kernel/sched/psi.c:933
 #2: ffff888054f61120 (&r->consumer_lock
#2
){+.+.}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:348 [inline]
){+.+.}-{3:3}, at: ptr_ring_consume_bh include/linux/ptr_ring.h:391 [inline]
){+.+.}-{3:3}, at: wg_packet_decrypt_worker+0x90f/0xda0 drivers/net/wireguard/receive.c:499
2 locks held by kworker/u8:9/7383:
 #0: ffff88801e364140 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #0: ffff88801e364140 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
 #1: ffffc900020cfc40 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #1: ffffc900020cfc40 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
2 locks held by syz-executor/14909:
 #0: ffff8880508a80d8 (&type->s_umount_key#53){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880508a80d8 (&type->s_umount_key#53){++++}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff8880508a80d8 (&type->s_umount_key#53){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
 #1: ffff888025c52870 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:396 [inline]
 #1: ffff888025c52870 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x208/0xbf0 fs/fs-writeback.c:3028
4 locks held by kworker/u8:24/16221:
2 locks held by kworker/u8:25/16223:
 #0: ffff88801e364140 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #0: ffff88801e364140 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
 #1: ffffc90004357c40 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #1: ffffc90004357c40 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
1 lock held by dhcpcd/17935:
 #0: ffff88807615de40 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1024 [inline]
 #0: ffff88807615de40 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: __sock_release net/socket.c:709 [inline]
 #0: ffff88807615de40 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: sock_close+0x82/0x220 net/socket.c:1501
1 lock held by syz-executor/19554:
 #0: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
 #0: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770 kernel/rcu/tree_exp.h:961
2 locks held by udevadm/20978:
2 locks held by dhcpcd/20981:
 #0: ffff888031f8e260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline]
 #0: ffff888031f8e260 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xe90 net/packet/af_packet.c:3204
 #1: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
 #1: ffffffff8eb5ff68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770 kernel/rcu/tree_exp.h:961
2 locks held by sed/20985:
 #0: 
ffff8880b863b160 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:667
 #1: ffff8880b8624440 (
psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0 kernel/sched/psi.c:933

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 32 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122
 nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 59 Comm: kworker/u8:5 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: writeback wb_workfn (flush-7:3)
RIP: 0010:check_preemption_disabled+0x1d/0xe0 lib/smp_processor_id.c:53
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 65 8b 05 f7 ad 9d 07 65 8b 0d ec ad 9d 07 f7 c1 ff ff ff 7f 74 0c 5b <41> 5e 41 5f 5d e9 b4 7e 41 f5 cc 9c 59 f7 c1 00 02 00 00 74 ea 65
RSP: 0018:ffffc90000a08ce8 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 00000000000098ef RCX: 0000000000010004
RDX: 0000000000000000 RSI: ffffffff8e4aeb49 RDI: ffffffff8c4bd380
RBP: ffff88801d3ebe00 R08: ffffffff90576ff7 R09: 1ffffffff20aedfe
R10: dffffc0000000000 R11: fffffbfff20aedff R12: 0000000000000005
R13: 0000000000000046 R14: ffff8880b873b160 R15: ffff88801d3eca68
FS:  0000000000000000(0000) GS:ffff888125059000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561e78e40950 CR3: 000000007534e000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline]
 lock_unpin_lock+0xdf/0x170 kernel/locking/lockdep.c:5998
 rq_unpin_lock kernel/sched/sched.h:1926 [inline]
 rq_unlock kernel/sched/sched.h:2012 [inline]
 ttwu_queue kernel/sched/core.c:4078 [inline]
 try_to_wake_up+0x874/0x14d0 kernel/sched/core.c:4415
 hrtimer_wakeup+0x4e/0x60 kernel/time/hrtimer.c:2293
 __run_hrtimer kernel/time/hrtimer.c:2032 [inline]
 __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2096
 hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2215
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2039 [inline]
RIP: 0010:vprintk_emit+0x45d/0x560 kernel/printk/printk.c:2478
Code: 0f 84 44 ff ff ff e8 b2 6a 21 00 fb eb 44 e8 aa 6a 21 00 e8 85 9d 29 0a 4d 85 f6 74 94 e8 9b 6a 21 00 fb 48 c7 c7 a0 bf b4 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 fb 1b
RSP: 0018:ffffc9000201dd60 EFLAGS: 00000293
RAX: ffffffff81a507a5 RBX: ffffffff81a5061f RCX: ffff88801d3ebe00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8eb4bfa0
RBP: ffffc9000201de10 R08: ffffffff90576ff7 R09: 1ffffffff20aedfe
R10: dffffc0000000000 R11: fffffbfff20aedff R12: 0000000000000000
R13: 000000000000004b R14: 0000000000000200 R15: 1ffff92000403bb0
 _printk+0xdd/0x130 kernel/printk/printk.c:2504
 print_hex_dump+0x1d2/0x2b0 lib/hexdump.c:286
 xfs_hex_dump+0x3d/0x50 fs/xfs/xfs_message.c:110
 xfs_buf_verifier_error+0x1cc/0x2a0 fs/xfs/xfs_error.c:330
 xfs_agfl_read_verify+0x17f/0x200 fs/xfs/libxfs/xfs_alloc.c:-1
 xfs_buf_ioend+0x31b/0x750 fs/xfs/xfs_buf.c:1119
 xfs_buf_iowait+0x133/0x420 fs/xfs/xfs_buf.c:1316
 _xfs_buf_read fs/xfs/xfs_buf.c:621 [inline]
 xfs_buf_read_map+0x31f/0xa00 fs/xfs/xfs_buf.c:687
 xfs_trans_read_buf_map+0x235/0x820 fs/xfs/xfs_trans_buf.c:273
 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
 xfs_alloc_read_agfl+0x22c/0x440 fs/xfs/libxfs/xfs_alloc.c:885
 xfs_alloc_fix_freelist+0x1183/0x1c60 fs/xfs/libxfs/xfs_alloc.c:2961
 xfs_alloc_vextent_prepare_ag+0xda/0x650 fs/xfs/libxfs/xfs_alloc.c:3566
 xfs_alloc_vextent_iterate_ags+0x147/0x960 fs/xfs/libxfs/xfs_alloc.c:3750
 xfs_alloc_vextent_start_ag+0x373/0x850 fs/xfs/libxfs/xfs_alloc.c:3839
 xfs_bmap_btalloc_best_length fs/xfs/libxfs/xfs_bmap.c:3617 [inline]
 xfs_bmap_btalloc fs/xfs/libxfs/xfs_bmap.c:3661 [inline]
 xfs_bmapi_allocate+0x18d1/0x2f20 fs/xfs/libxfs/xfs_bmap.c:3936
 xfs_bmapi_convert_one_delalloc fs/xfs/libxfs/xfs_bmap.c:4445 [inline]
 xfs_bmapi_convert_delalloc+0x879/0x1540 fs/xfs/libxfs/xfs_bmap.c:4501
 xfs_map_blocks fs/xfs/xfs_aops.c:461 [inline]
 xfs_writeback_range+0x6ab/0xf80 fs/xfs/xfs_aops.c:505
 iomap_writeback_range fs/iomap/buffered-io.c:1862 [inline]
 iomap_writeback_folio+0x14f1/0x2790 fs/iomap/buffered-io.c:1988
 iomap_writepages+0x167/0x2e0 fs/iomap/buffered-io.c:2051
 xfs_vm_writepages+0x2eb/0x3d0 fs/xfs/xfs_aops.c:719
 do_writepages+0x338/0x560 mm/page-writeback.c:2571
 __writeback_single_inode+0x12e/0xf90 fs/fs-writeback.c:1787
 writeback_sb_inodes+0x9de/0x1b00 fs/fs-writeback.c:2079
 wb_writeback+0x41c/0xad0 fs/fs-writeback.c:2264
 wb_do_writeback fs/fs-writeback.c:2432 [inline]
 wb_workfn+0x431/0x10f0 fs/fs-writeback.c:2477
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>