Warning: Permanently added '10.128.1.209' (ED25519) to the list of known hosts. executing program [ 572.944357][ T27] INFO: task kworker/0:3:1280 blocked for more than 143 seconds. [ 572.952260][ T27] Not tainted 5.15.161-syzkaller #0 [ 572.958630][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 572.967524][ T27] task:kworker/0:3 state:D stack:26944 pid: 1280 ppid: 2 flags:0x00004000 [ 572.976954][ T27] Workqueue: ipv6_addrconf addrconf_verify_work [ 572.983251][ T27] Call Trace: [ 572.986766][ T27] [ 572.989711][ T27] __schedule+0x12c4/0x45b0 [ 572.994480][ T27] ? mark_lock+0x98/0x340 [ 572.998835][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 573.005047][ T27] ? release_firmware_map_entry+0x190/0x190 [ 573.010969][ T27] ? __mutex_trylock_common+0x8d/0x2e0 [ 573.016770][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 573.021995][ T27] ? _raw_spin_unlock_irq+0x1f/0x40 [ 573.027480][ T27] ? lockdep_hardirqs_on+0x94/0x130 [ 573.032704][ T27] schedule+0x11b/0x1f0 [ 573.037103][ T27] schedule_preempt_disabled+0xf/0x20 [ 573.042623][ T27] __mutex_lock_common+0xe34/0x25a0 [ 573.048126][ T27] ? addrconf_verify_work+0xa/0x20 [ 573.053261][ T27] ? mutex_lock_io_nested+0x60/0x60 [ 573.058709][ T27] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 573.064898][ T27] ? print_irqtrace_events+0x210/0x210 [ 573.070383][ T27] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 573.076606][ T27] ? do_raw_spin_unlock+0x137/0x8b0 [ 573.081837][ T27] mutex_lock_nested+0x17/0x20 [ 573.087108][ T27] addrconf_verify_work+0xa/0x20 [ 573.092078][ T27] process_one_work+0x8a1/0x10c0 [ 573.097358][ T27] ? worker_detach_from_pool+0x260/0x260 [ 573.103023][ T27] ? _raw_spin_lock_irqsave+0x120/0x120 [ 573.108988][ T27] ? kthread_data+0x4e/0xc0 [ 573.113523][ T27] ? wq_worker_running+0x97/0x170 [ 573.118800][ T27] worker_thread+0xaca/0x1280 [ 573.123506][ T27] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 573.129904][ T27] kthread+0x3f6/0x4f0 [ 573.133999][ T27] ? rcu_lock_release+0x20/0x20 [ 573.139189][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.143802][ T27] ret_from_fork+0x1f/0x30 [ 573.148505][ T27] [ 573.151742][ T27] [ 573.151742][ T27] Showing all locks held in the system: [ 573.159775][ T27] 1 lock held by khungtaskd/27: [ 573.164895][ T27] #0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 573.174529][ T27] 3 locks held by kworker/0:3/1280: [ 573.179739][ T27] #0: ffff88814b1a0938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 [ 573.191005][ T27] #1: ffffc90005777d20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 [ 573.201485][ T27] #2: ffffffff8d9e8348 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 573.211156][ T27] 2 locks held by getty/3265: [ 573.216041][ T27] #0: ffff888023cb4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 [ 573.226005][ T27] #1: ffffc90002bab2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 [ 573.236435][ T27] 2 locks held by syz-executor702/3530: [ 573.242003][ T27] [ 573.244606][ T27] ============================================= [ 573.244606][ T27] [ 573.253039][ T27] NMI backtrace for cpu 1 [ 573.257389][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.161-syzkaller #0 [ 573.265378][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 573.275575][ T27] Call Trace: [ 573.278868][ T27] [ 573.281804][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 573.286502][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 573.292166][ T27] ? panic+0x860/0x860 [ 573.296267][ T27] ? nmi_cpu_backtrace+0x23b/0x4a0 [ 573.301407][ T27] nmi_cpu_backtrace+0x46a/0x4a0 [ 573.306368][ T27] ? __wake_up_klogd+0xd5/0x100 [ 573.311245][ T27] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.317419][ T27] ? _printk+0xd1/0x120 [ 573.321587][ T27] ? panic+0x860/0x860 [ 573.325665][ T27] ? __wake_up_klogd+0xcc/0x100 [ 573.330525][ T27] ? panic+0x860/0x860 [ 573.334609][ T27] ? __rcu_read_unlock+0x92/0x100 [ 573.339656][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 573.345752][ T27] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 573.351767][ T27] watchdog+0xe72/0xeb0 [ 573.355953][ T27] kthread+0x3f6/0x4f0 [ 573.360032][ T27] ? hungtask_pm_notify+0x50/0x50 [ 573.365072][ T27] ? kthread_blkcg+0xd0/0xd0 [ 573.369780][ T27] ret_from_fork+0x1f/0x30 [ 573.374245][ T27] [ 573.377451][ T27] Sending NMI from CPU 1 to CPUs 0: [ 573.382685][ C0] NMI backtrace for cpu 0 [ 573.382706][ C0] CPU: 0 PID: 3530 Comm: syz-executor702 Not tainted 5.15.161-syzkaller #0 [ 573.382725][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 573.382738][ C0] RIP: 0010:__kasan_check_write+0x0/0x10 [ 573.382761][ C0] Code: c1 16 8c eb 0a 48 c7 c7 9b c1 16 8c 4c 89 fe e8 16 e8 52 08 31 db eb d7 cc cc 89 f6 48 8b 0c 24 31 d2 e9 63 ef ff ff 0f 1f 00 <89> f6 48 8b 0c 24 ba 01 00 00 00 e9 50 ef ff ff 55 41 56 53 48 89 [ 573.382774][ C0] RSP: 0018:ffffc90002dd6738 EFLAGS: 00000246 [ 573.382789][ C0] RAX: 0000000000000004 RBX: 0000000000000000 RCX: ffffffff913f0f03 [ 573.382800][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88814a9abc00 [ 573.382811][ C0] RBP: ffffc90002dd6848 R08: dffffc0000000000 R09: ffffed1029535781 [ 573.382824][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff227e1f8 [ 573.382835][ C0] R13: dffffc0000000000 R14: ffff88814a9abc00 R15: 1ffff920005bacfc [ 573.382848][ C0] FS: 00005555557bc380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 573.382864][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 573.382876][ C0] CR2: 000055ccffae2408 CR3: 000000001cd08000 CR4: 00000000003506f0 [ 573.382890][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 573.382899][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 573.382910][ C0] Call Trace: [ 573.382916][ C0] [ 573.382922][ C0] ? nmi_cpu_backtrace+0x39f/0x4a0 [ 573.382941][ C0] ? read_lock_is_recursive+0x10/0x10 [ 573.382960][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 573.382978][ C0] ? unknown_nmi_error+0xd0/0xd0 [ 573.383010][ C0] ? nmi_cpu_backtrace_handler+0x8/0x10 [ 573.383027][ C0] ? nmi_handle+0xf7/0x370 [ 573.383045][ C0] ? __kasan_check_read+0x10/0x10 [ 573.383061][ C0] ? default_do_nmi+0x62/0x150 [ 573.383080][ C0] ? exc_nmi+0xa8/0x100 [ 573.383096][ C0] ? end_repeat_nmi+0x16/0x31 [ 573.383118][ C0] ? __kasan_check_read+0x10/0x10 [ 573.383135][ C0] ? __kasan_check_read+0x10/0x10 [ 573.383152][ C0] ? __kasan_check_read+0x10/0x10 [ 573.383169][ C0] [ 573.383173][ C0] [ 573.383178][ C0] __mutex_unlock_slowpath+0x200/0x750 [ 573.383197][ C0] ? tcf_idr_check_alloc+0xa1/0x380 [ 573.383214][ C0] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 573.383234][ C0] ? mutex_unlock+0x10/0x10 [ 573.383252][ C0] ? __sanitizer_cov_trace_const_cmp8+0xc/0x80 [ 573.383273][ C0] ? radix_tree_lookup+0x234/0x280 [ 573.383293][ C0] tcf_idr_check_alloc+0x97/0x380 [ 573.383381][ C0] tcf_police_init+0x294/0x17c0 [ 573.383398][ C0] ? netlink_rcv_skb+0x1cf/0x410 [ 573.383412][ C0] ? netlink_unicast+0x7b6/0x980 [ 573.383431][ C0] ? __se_sys_sendmsg+0x19a/0x260 [ 573.383455][ C0] ? tcf_police_search+0x40/0x40 [ 573.383482][ C0] ? tcf_action_init_1+0x226/0x7f0 [ 573.383498][ C0] ? nla_memcpy+0x56/0xb0 [ 573.383518][ C0] ? memcpy+0x3c/0x60 [ 573.383534][ C0] ? tcf_police_search+0x40/0x40 [ 573.383551][ C0] tcf_action_init_1+0x50f/0x7f0 [ 573.383627][ C0] ? tc_action_load_ops+0x550/0x550 [ 573.383648][ C0] ? read_lock_is_recursive+0x10/0x10 [ 573.383666][ C0] ? rcu_lock_release+0x5/0x20 [ 573.383699][ C0] tcf_action_init+0x2f3/0x750 [ 573.383720][ C0] ? tcf_action_init_1+0x7f0/0x7f0 [ 573.383750][ C0] ? reacquire_held_locks+0x660/0x660 [ 573.383782][ C0] ? apparmor_capable+0x12e/0x190 [ 573.383802][ C0] ? __nla_parse+0x3c/0x50 [ 573.383822][ C0] tc_ctl_action+0x49b/0xd00 [ 573.383845][ C0] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.383862][ C0] ? read_lock_is_recursive+0x10/0x10 [ 573.383906][ C0] ? tcf_free_cookie_rcu+0x40/0x40 [ 573.383925][ C0] rtnetlink_rcv_msg+0x993/0xee0 [ 573.383946][ C0] ? reacquire_held_locks+0x660/0x660 [ 573.383966][ C0] ? rtnetlink_bind+0x80/0x80 [ 573.383985][ C0] ? stack_trace_save+0x1c0/0x1c0 [ 573.384003][ C0] ? __kernel_text_address+0x94/0x100 [ 573.384024][ C0] ? unwind_get_return_address+0x49/0x80 [ 573.384043][ C0] ? reacquire_held_locks+0x660/0x660 [ 573.384060][ C0] ? arch_stack_walk+0xf3/0x140 [ 573.384079][ C0] ? mark_lock+0x98/0x340 [ 573.384098][ C0] ? mark_lock+0x98/0x340 [ 573.384115][ C0] ? __lock_acquire+0x1295/0x1ff0 [ 573.384146][ C0] netlink_rcv_skb+0x1cf/0x410 [ 573.384167][ C0] ? rtnetlink_bind+0x80/0x80 [ 573.384187][ C0] ? netlink_ack+0xb10/0xb10 [ 573.384211][ C0] netlink_unicast+0x7b6/0x980 [ 573.384241][ C0] ? netlink_detachskb+0x90/0x90 [ 573.384260][ C0] ? __virt_addr_valid+0x39e/0x450 [ 573.384276][ C0] ? 0xffffffff81000000 [ 573.384289][ C0] ? __check_object_size+0x300/0x410 [ 573.384309][ C0] ? bpf_lsm_netlink_send+0x5/0x10 [ 573.384355][ C0] netlink_sendmsg+0xa30/0xd60 [ 573.384377][ C0] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.384395][ C0] ? aa_sock_msg_perm+0x91/0x150 [ 573.384413][ C0] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 573.384434][ C0] ? security_socket_sendmsg+0x7d/0xa0 [ 573.384451][ C0] ? netlink_getsockopt+0x5b0/0x5b0 [ 573.384469][ C0] ____sys_sendmsg+0x59e/0x8f0 [ 573.384489][ C0] ? iovec_from_user+0x300/0x390 [ 573.384512][ C0] ? __sys_sendmsg_sock+0x30/0x30 [ 573.384539][ C0] ___sys_sendmsg+0x252/0x2e0 [ 573.384561][ C0] ? __sys_sendmsg+0x260/0x260 [ 573.384582][ C0] ? __lock_acquire+0x1295/0x1ff0 [ 573.384613][ C0] ? __context_tracking_enter+0x5f/0x90 [ 573.384634][ C0] ? __context_tracking_exit+0x4c/0x80 [ 573.384655][ C0] ? __fdget+0x158/0x220 [ 573.384674][ C0] __se_sys_sendmsg+0x19a/0x260 [ 573.384694][ C0] ? __x64_sys_sendmsg+0x80/0x80 [ 573.384718][ C0] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.384738][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 573.384757][ C0] ? syscall_enter_from_user_mode+0x2e/0x240 [ 573.384778][ C0] do_syscall_64+0x3b/0xb0 [ 573.384794][ C0] ? clear_bhb_loop+0x15/0x70 [ 573.384811][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 573.384829][ C0] RIP: 0033:0x7f64a491fdf9 [ 573.384846][ 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 [ 573.384859][ C0] RSP: 002b:00007ffea23f5c38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 573.384877][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f64a491fdf9 [ 573.384889][ C0] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 573.384899][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 [ 573.384909][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 573.384919][ C0] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 573.384936][ C0] [ 573.384943][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.258 msecs [ 573.386623][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 574.047294][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.161-syzkaller #0 [ 574.055285][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 574.065352][ T27] Call Trace: [ 574.068659][ T27] [ 574.071597][ T27] dump_stack_lvl+0x1e3/0x2d0 [ 574.076294][ T27] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 574.082044][ T27] ? panic+0x860/0x860 [ 574.086148][ T27] panic+0x318/0x860 [ 574.090068][ T27] ? schedule_preempt_disabled+0x20/0x20 [ 574.095717][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.101891][ T27] ? fb_is_primary_device+0xd0/0xd0 [ 574.107105][ T27] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 574.113186][ T27] ? nmi_trigger_cpumask_backtrace+0x221/0x2a0 [ 574.119353][ T27] ? nmi_trigger_cpumask_backtrace+0x281/0x2a0 [ 574.125534][ T27] ? nmi_trigger_cpumask_backtrace+0x286/0x2a0 [ 574.131713][ T27] watchdog+0xeb0/0xeb0 [ 574.135898][ T27] kthread+0x3f6/0x4f0 [ 574.139974][ T27] ? hungtask_pm_notify+0x50/0x50 [ 574.145008][ T27] ? kthread_blkcg+0xd0/0xd0 [ 574.149607][ T27] ret_from_fork+0x1f/0x30 [ 574.154049][ T27] [ 574.157296][ T27] Kernel Offset: disabled [ 574.161627][ T27] Rebooting in 86400 seconds..