Warning: Permanently added '10.128.0.254' (ED25519) to the list of known hosts. executing program [ 572.937577][ T27] INFO: task kworker/0:3:1303 blocked for more than 143 seconds. [ 572.945433][ T27] Not tainted 5.15.160-syzkaller #0 [ 572.952088][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 572.961043][ T27] task:kworker/0:3 state:D stack:23392 pid: 1303 ppid: 2 flags:0x00004000 [ 572.970494][ T27] Workqueue: ipv6_addrconf addrconf_verify_work [ 572.976758][ T27] Call Trace: [ 572.980356][ T27] [ 572.983288][ T27] __schedule+0x12c4/0x45b0 [ 572.988137][ T27] ? mark_lock+0x98/0x340 [ 572.992470][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 572.998774][ T27] ? release_firmware_map_entry+0x190/0x190 [ 573.004665][ T27] ? __mutex_trylock_common+0x8d/0x2e0 [ 573.010444][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 573.015728][ T27] ? _raw_spin_unlock_irq+0x1f/0x40 [ 573.021243][ T27] ? lockdep_hardirqs_on+0x94/0x130 [ 573.026445][ T27] schedule+0x11b/0x1f0 [ 573.030957][ T27] schedule_preempt_disabled+0xf/0x20 [ 573.036325][ T27] __mutex_lock_common+0xe34/0x25a0 [ 573.041839][ T27] ? addrconf_verify_work+0xa/0x20 [ 573.046949][ T27] ? mutex_lock_io_nested+0x60/0x60 [ 573.052542][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 573.058766][ T27] ? print_irqtrace_events+0x210/0x210 [ 573.064222][ T27] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 573.070406][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 573.075605][ T27] mutex_lock_nested+0x17/0x20 [ 573.080697][ T27] addrconf_verify_work+0xa/0x20 [ 573.085633][ T27] process_one_work+0x8a1/0x10c0 [ 573.090869][ T27] ? worker_detach_from_pool+0x260/0x260 [ 573.096501][ T27] ? _raw_spin_lock_irqsave+0x120/0x120 [ 573.102378][ T27] ? kthread_data+0x4e/0xc0 [ 573.106881][ T27] ? wq_worker_running+0x97/0x170 [ 573.112195][ T27] worker_thread+0xaca/0x1280 [ 573.116874][ T27] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 573.123133][ T27] kthread+0x3f6/0x4f0 [ 573.127201][ T27] ? rcu_lock_release+0x20/0x20 [ 573.132365][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.136954][ T27] ret_from_fork+0x1f/0x30 [ 573.141685][ T27] [ 573.144789][ T27] [ 573.144789][ T27] Showing all locks held in the system: [ 573.152880][ T27] 1 lock held by khungtaskd/27: [ 573.157912][ T27] #0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 573.167249][ T27] 3 locks held by kworker/0:3/1303: [ 573.172772][ T27] #0: ffff8880233a8d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 [ 573.183996][ T27] #1: ffffc90004fefd20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 [ 573.195256][ T27] #2: ffffffff8d9e7e48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 573.205001][ T27] 2 locks held by getty/3258: [ 573.209919][ T27] #0: ffff88802452b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 [ 573.219998][ T27] #1: ffffc9000249b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 [ 573.230348][ T27] 1 lock held by syz-executor187/3530: [ 573.235807][ T27] [ 573.238496][ T27] ============================================= [ 573.238496][ T27] [ 573.246909][ T27] NMI backtrace for cpu 0 [ 573.251235][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.160-syzkaller #0 [ 573.259204][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 573.269245][ T27] Call Trace: [ 573.272517][ T27] [ 573.275437][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 573.280108][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 573.285733][ T27] ? panic+0x860/0x860 [ 573.289895][ T27] ? nmi_cpu_backtrace+0x23b/0x4a0 [ 573.295004][ T27] nmi_cpu_backtrace+0x46a/0x4a0 [ 573.299929][ T27] ? __wake_up_klogd+0xd5/0x100 [ 573.304823][ T27] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.310966][ T27] ? _printk+0xd1/0x120 [ 573.315120][ T27] ? panic+0x860/0x860 [ 573.319179][ T27] ? __wake_up_klogd+0xcc/0x100 [ 573.324019][ T27] ? panic+0x860/0x860 [ 573.328078][ T27] ? __rcu_read_unlock+0x92/0x100 [ 573.333096][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 573.339156][ T27] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 573.345127][ T27] watchdog+0xe72/0xeb0 [ 573.349283][ T27] kthread+0x3f6/0x4f0 [ 573.353338][ T27] ? hungtask_pm_notify+0x50/0x50 [ 573.358350][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.362930][ T27] ret_from_fork+0x1f/0x30 [ 573.367345][ T27] [ 573.370432][ T27] Sending NMI from CPU 0 to CPUs 1: [ 573.375726][ C1] NMI backtrace for cpu 1 [ 573.375735][ C1] CPU: 1 PID: 3530 Comm: syz-executor187 Not tainted 5.15.160-syzkaller #0 [ 573.375749][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 573.375758][ C1] RIP: 0010:check_preemption_disabled+0x2e/0x110 [ 573.375779][ C1] Code: 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 8b 1d c8 13 e4 75 65 8b 05 31 6e e4 75 a9 ff ff ff 7f 74 22 <65> 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 c7 00 00 00 89 d8 [ 573.375791][ C1] RSP: 0018:ffffc90002fb65c8 EFLAGS: 00000046 [ 573.375804][ C1] RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff8162d268 [ 573.375814][ C1] RDX: 0000000000000000 RSI: ffffffff8a8b3780 RDI: ffffffff8ad8f6c0 [ 573.375824][ C1] RBP: ffffc90002fb6730 R08: dffffc0000000000 R09: fffffbfff1bc8cce [ 573.375834][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920005f6ccc [ 573.375843][ C1] R13: ffffffff8858fac7 R14: ffffc90002fb66b0 R15: dffffc0000000000 [ 573.375858][ C1] FS: 0000555556382380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 573.375871][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 573.375880][ C1] CR2: 000056230a41e600 CR3: 000000007e3de000 CR4: 00000000003506e0 [ 573.375892][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 573.375900][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 573.375909][ C1] Call Trace: [ 573.375913][ C1] [ 573.375918][ C1] ? nmi_cpu_backtrace+0x39f/0x4a0 [ 573.375933][ C1] ? read_lock_is_recursive+0x10/0x10 [ 573.375948][ C1] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.375963][ C1] ? unknown_nmi_error+0xd0/0xd0 [ 573.375984][ C1] ? nmi_cpu_backtrace_handler+0x8/0x10 [ 573.375998][ C1] ? nmi_handle+0xf7/0x370 [ 573.376013][ C1] ? check_preemption_disabled+0x2e/0x110 [ 573.376028][ C1] ? default_do_nmi+0x62/0x150 [ 573.376043][ C1] ? exc_nmi+0xa8/0x100 [ 573.376057][ C1] ? end_repeat_nmi+0x16/0x31 [ 573.376070][ C1] ? tcf_idr_check_alloc+0x97/0x380 [ 573.376087][ C1] ? lock_release+0xa8/0x9a0 [ 573.376100][ C1] ? check_preemption_disabled+0x2e/0x110 [ 573.376116][ C1] ? check_preemption_disabled+0x2e/0x110 [ 573.376133][ C1] ? check_preemption_disabled+0x2e/0x110 [ 573.376149][ C1] [ 573.376153][ C1] [ 573.376158][ C1] lock_release+0x181/0x9a0 [ 573.376173][ C1] ? rcu_lock_release+0x20/0x20 [ 573.376188][ C1] ? tcf_idr_check_alloc+0x97/0x380 [ 573.376202][ C1] ? __lock_acquire+0x1ff0/0x1ff0 [ 573.376216][ C1] ? __mutex_lock_common+0x444/0x25a0 [ 573.376231][ C1] ? __mutex_unlock_slowpath+0xeb/0x750 [ 573.376246][ C1] ? kasan_check_range+0x30/0x290 [ 573.376262][ C1] ? tcf_idr_check_alloc+0x97/0x380 [ 573.376275][ C1] __mutex_unlock_slowpath+0xde/0x750 [ 573.376290][ C1] ? tcf_idr_check_alloc+0xa1/0x380 [ 573.376303][ C1] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 573.376318][ C1] ? mutex_lock_io_nested+0x60/0x60 [ 573.376332][ C1] ? mutex_unlock+0x10/0x10 [ 573.376346][ C1] ? radix_tree_lookup+0xfc/0x280 [ 573.376360][ C1] ? __sanitizer_cov_trace_pc+0x32/0x60 [ 573.376376][ C1] ? radix_tree_lookup+0x234/0x280 [ 573.376392][ C1] tcf_idr_check_alloc+0x97/0x380 [ 573.376407][ C1] tcf_police_init+0x294/0x17c0 [ 573.376421][ C1] ? netlink_rcv_skb+0x1cf/0x410 [ 573.376433][ C1] ? netlink_unicast+0x7b6/0x980 [ 573.376449][ C1] ? __se_sys_sendmsg+0x19a/0x260 [ 573.376470][ C1] ? tcf_police_search+0x40/0x40 [ 573.376493][ C1] ? tcf_action_init_1+0x226/0x7f0 [ 573.376507][ C1] ? nla_memcpy+0x56/0xb0 [ 573.376522][ C1] ? memcpy+0x3c/0x60 [ 573.376536][ C1] ? tcf_police_search+0x40/0x40 [ 573.376550][ C1] tcf_action_init_1+0x50f/0x7f0 [ 573.376568][ C1] ? tc_action_load_ops+0x550/0x550 [ 573.376581][ C1] ? read_lock_is_recursive+0x10/0x10 [ 573.376595][ C1] ? rcu_lock_release+0x5/0x20 [ 573.376618][ C1] tcf_action_init+0x2f3/0x750 [ 573.376635][ C1] ? tcf_action_init_1+0x7f0/0x7f0 [ 573.376660][ C1] ? reacquire_held_locks+0x660/0x660 [ 573.376687][ C1] ? apparmor_capable+0x12e/0x190 [ 573.376703][ C1] ? __nla_parse+0x3c/0x50 [ 573.376718][ C1] tc_ctl_action+0x49b/0xd00 [ 573.376737][ C1] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.376751][ C1] ? read_lock_is_recursive+0x10/0x10 [ 573.376788][ C1] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.376803][ C1] rtnetlink_rcv_msg+0x993/0xee0 [ 573.376819][ C1] ? reacquire_held_locks+0x660/0x660 [ 573.376836][ C1] ? rtnetlink_bind+0x80/0x80 [ 573.376856][ C1] ? stack_trace_save+0x1c0/0x1c0 [ 573.376871][ C1] ? __kernel_text_address+0x94/0x100 [ 573.376887][ C1] ? unwind_get_return_address+0x49/0x80 [ 573.376903][ C1] ? reacquire_held_locks+0x660/0x660 [ 573.376916][ C1] ? arch_stack_walk+0xf3/0x140 [ 573.376932][ C1] ? mark_lock+0x98/0x340 [ 573.376947][ C1] ? mark_lock+0x98/0x340 [ 573.376961][ C1] ? __lock_acquire+0x1295/0x1ff0 [ 573.376986][ C1] netlink_rcv_skb+0x1cf/0x410 [ 573.377000][ C1] ? rtnetlink_bind+0x80/0x80 [ 573.377015][ C1] ? netlink_ack+0xb10/0xb10 [ 573.377034][ C1] netlink_unicast+0x7b6/0x980 [ 573.377053][ C1] ? netlink_detachskb+0x90/0x90 [ 573.377068][ C1] ? __virt_addr_valid+0x39e/0x450 [ 573.377081][ C1] ? 0xffffffff81000000 [ 573.377091][ C1] ? __check_object_size+0x300/0x410 [ 573.377108][ C1] ? bpf_lsm_netlink_send+0x5/0x10 [ 573.377123][ C1] netlink_sendmsg+0xa30/0xd60 [ 573.377141][ C1] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.377155][ C1] ? aa_sock_msg_perm+0x91/0x150 [ 573.377170][ C1] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 573.377183][ C1] ? security_socket_sendmsg+0x7d/0xa0 [ 573.377196][ C1] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.377210][ C1] ____sys_sendmsg+0x59e/0x8f0 [ 573.377225][ C1] ? iovec_from_user+0x300/0x390 [ 573.377244][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 573.377266][ C1] ___sys_sendmsg+0x252/0x2e0 [ 573.377283][ C1] ? __sys_sendmsg+0x260/0x260 [ 573.377299][ C1] ? __lock_acquire+0x1295/0x1ff0 [ 573.377325][ C1] ? __context_tracking_enter+0x5f/0x90 [ 573.377341][ C1] ? __context_tracking_exit+0x4c/0x80 [ 573.377357][ C1] ? __fdget+0x158/0x220 [ 573.377373][ C1] __se_sys_sendmsg+0x19a/0x260 [ 573.377392][ C1] ? __x64_sys_sendmsg+0x80/0x80 [ 573.377411][ C1] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.377427][ C1] ? lockdep_hardirqs_on+0x94/0x130 [ 573.377442][ C1] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.377459][ C1] do_syscall_64+0x3b/0xb0 [ 573.377472][ C1] ? clear_bhb_loop+0x15/0x70 [ 573.377486][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 573.377500][ C1] RIP: 0033:0x7f0e5fc89df9 [ 573.377513][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 573.377524][ C1] RSP: 002b:00007ffd2a730c38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 573.377537][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0e5fc89df9 [ 573.377547][ C1] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 573.377555][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 [ 573.377563][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 573.377571][ C1] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 573.377585][ C1] [ 573.377591][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.865 msecs [ 573.390254][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 574.100943][ T27] CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.160-syzkaller #0 [ 574.108909][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 574.118951][ T27] Call Trace: [ 574.122218][ T27] [ 574.125135][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 574.129806][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 574.135428][ T27] ? panic+0x860/0x860 [ 574.139503][ T27] panic+0x318/0x860 [ 574.143385][ T27] ? schedule_preempt_disabled+0x20/0x20 [ 574.149007][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.155164][ T27] ? fb_is_primary_device+0xd0/0xd0 [ 574.160362][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 574.166442][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.172597][ T27] ? nmi_trigger_cpumask_backtrace+0x281/0x2a0 [ 574.178744][ T27] ? nmi_trigger_cpumask_backtrace+0x286/0x2a0 [ 574.184897][ T27] watchdog+0xeb0/0xeb0 [ 574.189067][ T27] kthread+0x3f6/0x4f0 [ 574.193133][ T27] ? hungtask_pm_notify+0x50/0x50 [ 574.198148][ T27] ? kthread_blkcg+0xd0/0xd0 [ 574.202732][ T27] ret_from_fork+0x1f/0x30 [ 574.207148][ T27] [ 574.210437][ T27] Kernel Offset: disabled [ 574.214754][ T27] Rebooting in 86400 seconds..