INFO: task syz-executor:10060 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc5-next-20250711-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21704 pid:10060 tgid:10060 ppid:1      task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5314 [inline]
 __schedule+0x16f5/0x4d00 kernel/sched/core.c:6697
 __schedule_loop kernel/sched/core.c:6775 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6790
 io_schedule+0x80/0xd0 kernel/sched/core.c:7635
 folio_wait_bit_common+0x6b0/0xb90 mm/filemap.c:1317
 __folio_lock mm/filemap.c:1675 [inline]
 folio_lock include/linux/pagemap.h:1114 [inline]
 __filemap_get_folio+0x139/0xaf0 mm/filemap.c:1929
 truncate_inode_pages_range+0x3ed/0xda0 mm/truncate.c:388
 evict+0x517/0x9c0 fs/inode.c:812
 dispose_list fs/inode.c:852 [inline]
 evict_inodes+0x459/0x6c0 fs/inode.c:900
 generic_shutdown_super+0x9a/0x2c0 fs/super.c:628
 kill_block_super+0x44/0x90 fs/super.c:1755
 deactivate_locked_super+0xb9/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1378
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:208 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6d7d98fc57
RSP: 002b:00007ffda2d1ca88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f6d7da10925 RCX: 00007f6d7d98fc57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda2d1cb40
RBP: 00007ffda2d1cb40 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffda2d1dbd0
R13: 00007f6d7da10925 R14: 000000000006006d R15: 00007ffda2d1dc10
 </TASK>

Showing all locks held in the system:
5 locks held by kauditd/30:
1 lock held by khungtaskd/31:
 #0: ffffffff8e13c5a0
 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6770
2 locks held by getty/5616:
 #0: ffff88814dd070a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
2 locks held by kworker/u8:12/6946:
 #0: ffff8880b8639fd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
 #1: ffff8880b8623f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39a/0x6d0 kernel/sched/psi.c:991
1 lock held by udevd/7730:
1 lock held by syz-executor/10060:
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
1 lock held by syz.0.1001/11267:
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
1 lock held by syz.5.1166/12485:
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
1 lock held by syz.6.1264/13269:
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
1 lock held by syz.6.1264/13314:
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: __super_lock fs/super.c:59 [inline]
 #0: ffff8880318f60e0 (&type->s_umount_key#127){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 fs/super.c:121
1 lock held by syz.9.1305/13515:
 #0: ffff88803cc00278 (&c->state_lock){++++}-{4:4}, at: bch2_fs_read_write_early+0x1e/0x40 fs/bcachefs/super.c:574
1 lock held by syz.8.1308/13525:
 #0: ffffffff8e1420f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
 #0: ffffffff8e1420f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730 kernel/rcu/tree_exp.h:967
2 locks held by udevadm/13559:
4 locks held by dhcpcd/13576:
 #0: ffff888029644258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1667 [inline]
 #0: ffff888029644258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0 net/packet/af_packet.c:3252
 #1: ffff8880b8639fd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
 #2: ffff8880b8623f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39a/0x6d0 kernel/sched/psi.c:991
 #3: ffffffff8e13c5a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #3: ffffffff8e13c5a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #3: ffffffff8e13c5a0 (rcu_read_lock){....}-{1:3}, at: page_table_check_set+0x18d/0x730 mm/page_table_check.c:112
1 lock held by dhcpcd/13577:
 #0: ffff88804d856258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1667 [inline]
 #0: ffff88804d856258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0 net/packet/af_packet.c:3252
2 locks held by dhcpcd-run-hook/13580:

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc5-next-20250711-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
 watchdog+0xfee/0x1030 kernel/hung_task.c:491
 kthread+0x711/0x8a0 kernel/kthread.c:463
 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>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13515 Comm: syz.9.1305 Not tainted 6.16.0-rc5-next-20250711-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:stack_trace_consume_entry+0x12e/0x280 kernel/stacktrace.c:95
Code: 77 00 49 89 e8 4c 89 e2 48 89 de 49 89 37 41 8b 18 41 0f b6 44 15 00 84 c0 0f 85 34 01 00 00 41 3b 1e 0f 92 c0 48 83 c4 18 5b <41> 5c 41 5d 41 5e 41 5f 5d e9 c4 96 d0 09 cc 44 89 c1 80 e1 07 80
RSP: 0018:ffffc90000a08718 EFLAGS: 00000092
RAX: 0000000000000001 RBX: ffffc90000a08800 RCX: 8f44729abb49f300
RDX: dffffc0000000000 RSI: ffffffff8458ac86 RDI: ffffc90000a08800
RBP: 1ffff92000141102 R08: ffffc90000a08810 R09: 000000000000000d
R10: ffffc90000a08798 R11: ffffffff81ac7b20 R12: 0000000000000000
R13: 1ffff92000141101 R14: ffffc90000a08808 R15: ffffc90000a088e8
FS:  00007f63a31f66c0(0000) GS:ffff888125cc6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555c0ac61950 CR3: 00000000362ca000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 arch_stack_walk+0x10d/0x150 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack+0x3e/0x60 mm/kasan/common.c:47
 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:548
 insert_work+0x3d/0x330 kernel/workqueue.c:2187
 __queue_work+0xcd2/0xfb0 kernel/workqueue.c:2342
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1793 [inline]
 __run_timers kernel/time/timer.c:2372 [inline]
 __run_timer_base+0x646/0x860 kernel/time/timer.c:2384
 run_timer_base kernel/time/timer.c:2393 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline]
RIP: 0010:vprintk_emit+0x58f/0x7a0 kernel/printk/printk.c:2449
Code: 85 32 01 00 00 e8 e1 49 1f 00 41 89 df 4d 85 f6 48 8b 1c 24 75 07 e8 d0 49 1f 00 eb 06 e8 c9 49 1f 00 fb 48 c7 c7 40 08 13 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 69 35
RSP: 0018:ffffc9000464f060 EFLAGS: 00000246
RAX: ffffffff81a06dc7 RBX: ffffffff81a06c84 RCX: 0000000000080000
RDX: ffffc9000be09000 RSI: 000000000007ffff RDI: ffffffff8e130840
RBP: ffffc9000464f170 R08: ffffffff8fa3bb37 R09: 1ffffffff1f47766
R10: dffffc0000000000 R11: fffffbfff1f47767 R12: dffffc0000000000
R13: 1ffff920008c9e10 R14: 0000000000000200 R15: 0000000000000028
 bch2_print_maybe_redirect fs/bcachefs/super.c:137 [inline]
 __bch2_print+0x176/0x220 fs/bcachefs/super.c:156
 bch2_fs_freespace_init+0xce/0x330 fs/bcachefs/alloc_background.c:2418
 bch2_fs_initialize+0x6de/0xf90 fs/bcachefs/recovery.c:1241
 bch2_fs_start+0xaa0/0xda0 fs/bcachefs/super.c:1214
 bch2_fs_get_tree+0xb39/0x1540 fs/bcachefs/fs.c:2494
 vfs_get_tree+0x8f/0x2b0 fs/super.c:1804
 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4344 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4321
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f63a53900ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f63a31f5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f63a31f5ef0 RCX: 00007f63a53900ca
RDX: 0000200000000140 RSI: 0000200000000000 RDI: 00007f63a31f5eb0
RBP: 0000200000000140 R08: 00007f63a31f5ef0 R09: 0000000000200414
R10: 0000000000200414 R11: 0000000000000246 R12: 0000200000000000
R13: 00007f63a31f5eb0 R14: 0000000000005ad0 R15: 00002000000000c0
 </TASK>