Warning: Permanently added '10.128.0.153' (ED25519) to the list of known hosts. executing program [ 573.012858][ T27] INFO: task kworker/0:1:13 blocked for more than 143 seconds. [ 573.020574][ T27] Not tainted 5.15.159-syzkaller #0 [ 573.026642][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 573.035620][ T27] task:kworker/0:1 state:D stack:26176 pid: 13 ppid: 2 flags:0x00004000 [ 573.045012][ T27] Workqueue: ipv6_addrconf addrconf_verify_work [ 573.051283][ T27] Call Trace: [ 573.054755][ T27] [ 573.057804][ T27] __schedule+0x12c4/0x45b0 [ 573.062327][ T27] ? mark_lock+0x98/0x340 [ 573.066927][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 573.073071][ T27] ? release_firmware_map_entry+0x190/0x190 [ 573.078976][ T27] ? __mutex_trylock_common+0x8d/0x2e0 [ 573.084619][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 573.091047][ T27] ? _raw_spin_unlock_irq+0x1f/0x40 [ 573.097576][ T27] ? lockdep_hardirqs_on+0x94/0x130 [ 573.102929][ T27] schedule+0x11b/0x1f0 [ 573.107527][ T27] schedule_preempt_disabled+0xf/0x20 [ 573.113087][ T27] __mutex_lock_common+0xe34/0x25a0 [ 573.118302][ T27] ? addrconf_verify_work+0xa/0x20 [ 573.123631][ T27] ? mutex_lock_io_nested+0x60/0x60 [ 573.128829][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 573.135044][ T27] ? print_irqtrace_events+0x210/0x210 [ 573.140518][ T27] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 573.146602][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 573.151950][ T27] mutex_lock_nested+0x17/0x20 [ 573.156908][ T27] addrconf_verify_work+0xa/0x20 [ 573.162020][ T27] process_one_work+0x8a1/0x10c0 [ 573.167158][ T27] ? worker_detach_from_pool+0x260/0x260 [ 573.172929][ T27] ? _raw_spin_lock_irqsave+0x120/0x120 [ 573.178478][ T27] ? kthread_data+0x4e/0xc0 [ 573.183271][ T27] ? wq_worker_running+0x97/0x170 [ 573.188573][ T27] worker_thread+0xaca/0x1280 [ 573.194202][ T27] kthread+0x3f6/0x4f0 [ 573.198301][ T27] ? rcu_lock_release+0x20/0x20 [ 573.203581][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.208380][ T27] ret_from_fork+0x1f/0x30 [ 573.213524][ T27] [ 573.216839][ T27] [ 573.216839][ T27] Showing all locks held in the system: [ 573.224837][ T27] 3 locks held by kworker/0:1/13: [ 573.229869][ T27] #0: ffff888024437d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 [ 573.241162][ T27] #1: ffffc90000d27d20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 [ 573.251621][ T27] #2: ffffffff8d9e7e48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 573.261214][ T27] 1 lock held by khungtaskd/27: [ 573.266199][ T27] #0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 573.275722][ T27] 2 locks held by getty/3259: [ 573.280479][ T27] #0: ffff88814aea3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 [ 573.290425][ T27] #1: ffffc9000209b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 [ 573.300786][ T27] 2 locks held by syz-executor182/3524: [ 573.306477][ T27] [ 573.308801][ T27] ============================================= [ 573.308801][ T27] [ 573.317567][ T27] NMI backtrace for cpu 1 [ 573.321896][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.159-syzkaller #0 [ 573.329864][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 573.339905][ T27] Call Trace: [ 573.343189][ T27] [ 573.346113][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 573.350790][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 573.356414][ T27] ? panic+0x860/0x860 [ 573.360484][ T27] ? nmi_cpu_backtrace+0x23b/0x4a0 [ 573.365592][ T27] nmi_cpu_backtrace+0x46a/0x4a0 [ 573.370538][ T27] ? __wake_up_klogd+0xd5/0x100 [ 573.375413][ T27] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.381575][ T27] ? _printk+0xd1/0x120 [ 573.385730][ T27] ? panic+0x860/0x860 [ 573.389795][ T27] ? __wake_up_klogd+0xcc/0x100 [ 573.395501][ T27] ? panic+0x860/0x860 [ 573.399760][ T27] ? __rcu_read_unlock+0x92/0x100 [ 573.404787][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 573.410972][ T27] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 573.416956][ T27] watchdog+0xe72/0xeb0 [ 573.421128][ T27] kthread+0x3f6/0x4f0 [ 573.425190][ T27] ? hungtask_pm_notify+0x50/0x50 [ 573.430212][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.434792][ T27] ret_from_fork+0x1f/0x30 [ 573.439219][ T27] [ 573.442357][ T27] Sending NMI from CPU 1 to CPUs 0: [ 573.447592][ C0] NMI backtrace for cpu 0 [ 573.447601][ C0] CPU: 0 PID: 3524 Comm: syz-executor182 Not tainted 5.15.159-syzkaller #0 [ 573.447616][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 573.447624][ C0] RIP: 0010:check_preemption_disabled+0x59/0x110 [ 573.447645][ C0] Code: 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 c7 00 00 00 89 d8 48 83 c4 10 5b 41 5c 41 5e 41 5f c3 48 c7 04 24 00 00 00 00 9c <8f> 04 24 f7 04 24 00 02 00 00 74 c9 49 89 f6 49 89 ff 65 4c 8b 25 [ 573.447657][ C0] RSP: 0018:ffffc90002ee6518 EFLAGS: 00000046 [ 573.447670][ C0] RAX: 0000000080000000 RBX: 0000000000000000 RCX: ffff88801dc9bb80 [ 573.447680][ C0] RDX: 0000000000000000 RSI: ffffffff8a8b3780 RDI: ffffffff8ad8f680 [ 573.447689][ C0] RBP: 00000000ffffffff R08: dffffc0000000000 R09: ffffc90002ee6780 [ 573.447699][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000246 [ 573.447708][ C0] R13: ffff88801dc9bb80 R14: 00000000ffffffff R15: ffffffff8c91fb40 [ 573.447718][ C0] FS: 0000555556e32380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 573.447730][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 573.447740][ C0] CR2: 00007ffd79c2b338 CR3: 0000000023f3f000 CR4: 00000000003506f0 [ 573.447752][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 573.447760][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 573.447768][ C0] Call Trace: [ 573.447773][ C0] [ 573.447778][ C0] ? nmi_cpu_backtrace+0x39f/0x4a0 [ 573.447794][ C0] ? read_lock_is_recursive+0x10/0x10 [ 573.447810][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.447824][ C0] ? unknown_nmi_error+0xd0/0xd0 [ 573.447845][ C0] ? nmi_cpu_backtrace_handler+0x8/0x10 [ 573.447859][ C0] ? nmi_handle+0xf7/0x370 [ 573.447874][ C0] ? check_preemption_disabled+0x59/0x110 [ 573.447889][ C0] ? default_do_nmi+0x62/0x150 [ 573.447904][ C0] ? exc_nmi+0xa8/0x100 [ 573.447917][ C0] ? end_repeat_nmi+0x16/0x31 [ 573.447935][ C0] ? check_preemption_disabled+0x59/0x110 [ 573.447951][ C0] ? check_preemption_disabled+0x59/0x110 [ 573.447968][ C0] ? check_preemption_disabled+0x59/0x110 [ 573.447984][ C0] [ 573.447987][ C0] [ 573.447993][ C0] lock_is_held_type+0x76/0x180 [ 573.448010][ C0] ___might_sleep+0xa2/0x6a0 [ 573.448027][ C0] ? __might_sleep+0xc0/0xc0 [ 573.448041][ C0] ? rcu_lock_release+0x20/0x20 [ 573.448056][ C0] ? tcf_idr_check_alloc+0x97/0x380 [ 573.448071][ C0] ? __lock_acquire+0x1ff0/0x1ff0 [ 573.448086][ C0] __mutex_lock_common+0xd4/0x25a0 [ 573.448103][ C0] ? print_irqtrace_events+0x210/0x210 [ 573.448117][ C0] ? __mutex_unlock_slowpath+0x218/0x750 [ 573.448131][ C0] ? tcf_idr_check_alloc+0xa1/0x380 [ 573.448151][ C0] ? mutex_lock_io_nested+0x60/0x60 [ 573.448169][ C0] ? __mutex_unlock_slowpath+0x218/0x750 [ 573.448184][ C0] ? radix_tree_lookup+0x234/0x280 [ 573.448199][ C0] mutex_lock_nested+0x17/0x20 [ 573.448213][ C0] tcf_idr_check_alloc+0xa1/0x380 [ 573.448228][ C0] tcf_police_init+0x294/0x17c0 [ 573.448242][ C0] ? netlink_rcv_skb+0x1cf/0x410 [ 573.448253][ C0] ? netlink_unicast+0x7b6/0x980 [ 573.448269][ C0] ? __se_sys_sendmsg+0x19a/0x260 [ 573.448289][ C0] ? tcf_police_search+0x40/0x40 [ 573.448313][ C0] ? tcf_action_init_1+0x226/0x7f0 [ 573.448326][ C0] ? nla_memcpy+0x56/0xb0 [ 573.448341][ C0] ? memcpy+0x3c/0x60 [ 573.448355][ C0] ? tcf_police_search+0x40/0x40 [ 573.448369][ C0] tcf_action_init_1+0x50f/0x7f0 [ 573.448387][ C0] ? tc_action_load_ops+0x550/0x550 [ 573.448400][ C0] ? read_lock_is_recursive+0x10/0x10 [ 573.448414][ C0] ? rcu_lock_release+0x5/0x20 [ 573.448437][ C0] tcf_action_init+0x2f3/0x750 [ 573.448454][ C0] ? tcf_action_init_1+0x7f0/0x7f0 [ 573.448479][ C0] ? reacquire_held_locks+0x660/0x660 [ 573.448504][ C0] ? apparmor_capable+0x12e/0x190 [ 573.448520][ C0] ? __nla_parse+0x3c/0x50 [ 573.448535][ C0] tc_ctl_action+0x49b/0xd00 [ 573.448554][ C0] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.448567][ C0] ? read_lock_is_recursive+0x10/0x10 [ 573.448605][ C0] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.448619][ C0] rtnetlink_rcv_msg+0x993/0xee0 [ 573.448636][ C0] ? reacquire_held_locks+0x660/0x660 [ 573.448652][ C0] ? rtnetlink_bind+0x80/0x80 [ 573.448667][ C0] ? stack_trace_save+0x1c0/0x1c0 [ 573.448682][ C0] ? __kernel_text_address+0x94/0x100 [ 573.448698][ C0] ? unwind_get_return_address+0x49/0x80 [ 573.448714][ C0] ? reacquire_held_locks+0x660/0x660 [ 573.448727][ C0] ? arch_stack_walk+0xf3/0x140 [ 573.448744][ C0] ? mark_lock+0x98/0x340 [ 573.448764][ C0] ? mark_lock+0x98/0x340 [ 573.448778][ C0] ? __lock_acquire+0x1295/0x1ff0 [ 573.448804][ C0] netlink_rcv_skb+0x1cf/0x410 [ 573.448817][ C0] ? rtnetlink_bind+0x80/0x80 [ 573.448833][ C0] ? netlink_ack+0xb10/0xb10 [ 573.448851][ C0] netlink_unicast+0x7b6/0x980 [ 573.448870][ C0] ? netlink_detachskb+0x90/0x90 [ 573.448885][ C0] ? __virt_addr_valid+0x39e/0x450 [ 573.448899][ C0] ? 0xffffffff81000000 [ 573.448908][ C0] ? __check_object_size+0x300/0x410 [ 573.448924][ C0] ? bpf_lsm_netlink_send+0x5/0x10 [ 573.448939][ C0] netlink_sendmsg+0xa30/0xd60 [ 573.448957][ C0] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.448971][ C0] ? aa_sock_msg_perm+0x91/0x150 [ 573.448986][ C0] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 573.448999][ C0] ? security_socket_sendmsg+0x7d/0xa0 [ 573.449012][ C0] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.449026][ C0] ____sys_sendmsg+0x59e/0x8f0 [ 573.449041][ C0] ? iovec_from_user+0x300/0x390 [ 573.449059][ C0] ? __sys_sendmsg_sock+0x30/0x30 [ 573.449081][ C0] ___sys_sendmsg+0x252/0x2e0 [ 573.449098][ C0] ? __sys_sendmsg+0x260/0x260 [ 573.449118][ C0] ? __lock_acquire+0x1295/0x1ff0 [ 573.449147][ C0] ? __context_tracking_enter+0x5f/0x90 [ 573.449163][ C0] ? __context_tracking_exit+0x4c/0x80 [ 573.449179][ C0] ? __fdget+0x158/0x220 [ 573.449194][ C0] __se_sys_sendmsg+0x19a/0x260 [ 573.449211][ C0] ? __x64_sys_sendmsg+0x80/0x80 [ 573.449230][ C0] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.449245][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 573.449260][ C0] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.449277][ C0] do_syscall_64+0x3b/0xb0 [ 573.449290][ C0] ? clear_bhb_loop+0x15/0x70 [ 573.449303][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 573.449317][ C0] RIP: 0033:0x7fbd16568df9 [ 573.449330][ C0] 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 [ 573.449340][ C0] RSP: 002b:00007ffdd44c1d68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 573.449354][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbd16568df9 [ 573.449364][ C0] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 573.449372][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 [ 573.449380][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 573.449388][ C0] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 573.449402][ C0] [ 573.449413][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.814 msecs [ 573.453266][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 574.160633][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.159-syzkaller #0 [ 574.168600][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 574.178995][ T27] Call Trace: [ 574.182264][ T27] [ 574.185202][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 574.189879][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 574.195509][ T27] ? panic+0x860/0x860 [ 574.199681][ T27] panic+0x318/0x860 [ 574.203666][ T27] ? schedule_preempt_disabled+0x20/0x20 [ 574.209293][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.215443][ T27] ? fb_is_primary_device+0xd0/0xd0 [ 574.220720][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 574.226782][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.232930][ T27] ? nmi_trigger_cpumask_backtrace+0x281/0x2a0 [ 574.239167][ T27] ? nmi_trigger_cpumask_backtrace+0x286/0x2a0 [ 574.245313][ T27] watchdog+0xeb0/0xeb0 [ 574.249479][ T27] kthread+0x3f6/0x4f0 [ 574.253655][ T27] ? hungtask_pm_notify+0x50/0x50 [ 574.258675][ T27] ? kthread_blkcg+0xd0/0xd0 [ 574.263262][ T27] ret_from_fork+0x1f/0x30 [ 574.267684][ T27] [ 574.271140][ T27] Kernel Offset: disabled [ 574.275471][ T27] Rebooting in 86400 seconds..