Warning: Permanently added '10.128.1.122' (ED25519) to the list of known hosts. executing program [ 573.602786][ T30] INFO: task kworker/u8:8:4159 blocked for more than 143 seconds. [ 573.610890][ T30] Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 573.620311][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 573.629157][ T30] task:kworker/u8:8 state:D stack:21816 pid:4159 tgid:4159 ppid:2 flags:0x00004000 [ 573.640146][ T30] Workqueue: ipv6_addrconf addrconf_verify_work [ 573.647072][ T30] Call Trace: [ 573.650389][ T30] [ 573.654145][ T30] __schedule+0x17e8/0x4a20 [ 573.658750][ T30] ? __pfx___schedule+0x10/0x10 [ 573.664193][ T30] ? __pfx_lock_release+0x10/0x10 [ 573.669358][ T30] ? __mutex_trylock_common+0x92/0x2e0 [ 573.675465][ T30] ? kthread_data+0x52/0xd0 [ 573.680103][ T30] ? schedule+0x90/0x320 [ 573.684968][ T30] ? wq_worker_sleeping+0x66/0x240 [ 573.690139][ T30] ? schedule+0x90/0x320 [ 573.695510][ T30] schedule+0x14b/0x320 [ 573.699818][ T30] schedule_preempt_disabled+0x13/0x30 [ 573.705896][ T30] __mutex_lock+0x6a4/0xd70 [ 573.710456][ T30] ? __mutex_lock+0x527/0xd70 [ 573.715768][ T30] ? addrconf_verify_work+0x19/0x30 [ 573.721012][ T30] ? __pfx___mutex_lock+0x10/0x10 [ 573.726580][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 573.732957][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 573.739342][ T30] ? process_scheduled_works+0x945/0x1830 [ 573.746165][ T30] addrconf_verify_work+0x19/0x30 [ 573.751247][ T30] process_scheduled_works+0xa2c/0x1830 [ 573.757408][ T30] ? __pfx_process_scheduled_works+0x10/0x10 [ 573.763781][ T30] ? assign_work+0x364/0x3d0 [ 573.768419][ T30] worker_thread+0x86d/0xd70 [ 573.773642][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 573.779695][ T30] ? __kthread_parkme+0x169/0x1d0 [ 573.785364][ T30] ? __pfx_worker_thread+0x10/0x10 [ 573.790532][ T30] kthread+0x2f0/0x390 [ 573.795197][ T30] ? __pfx_worker_thread+0x10/0x10 [ 573.800361][ T30] ? __pfx_kthread+0x10/0x10 [ 573.805483][ T30] ret_from_fork+0x4b/0x80 [ 573.809952][ T30] ? __pfx_kthread+0x10/0x10 [ 573.815444][ T30] ret_from_fork_asm+0x1a/0x30 [ 573.820282][ T30] [ 573.823790][ T30] [ 573.823790][ T30] Showing all locks held in the system: [ 573.831623][ T30] 1 lock held by khungtaskd/30: [ 573.837209][ T30] #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 573.847546][ T30] 3 locks held by kworker/u8:8/4159: [ 573.862513][ T30] #0: ffff888029b47948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 [ 573.882526][ T30] #1: ffffc9000bc07d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 [ 573.912504][ T30] #2: ffffffff8f5e7648 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 [ 573.922174][ T30] 3 locks held by kworker/1:2/4508: [ 573.942549][ T30] 2 locks held by getty/4851: [ 573.947270][ T30] #0: ffff88802a3d80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 573.972770][ T30] #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 573.983702][ T30] 2 locks held by syz-executor153/5113: [ 573.989279][ T30] [ 573.991623][ T30] ============================================= [ 573.991623][ T30] [ 574.000893][ T30] NMI backtrace for cpu 0 [ 574.005258][ T30] CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 574.015173][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 574.025250][ T30] Call Trace: [ 574.028552][ T30] [ 574.031499][ T30] dump_stack_lvl+0x241/0x360 [ 574.036247][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 574.041503][ T30] ? __pfx__printk+0x10/0x10 [ 574.046138][ T30] ? vprintk_emit+0x631/0x770 [ 574.050883][ T30] ? __pfx_vprintk_emit+0x10/0x10 [ 574.055981][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 574.060988][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 574.066480][ T30] ? _printk+0xd5/0x120 [ 574.070674][ T30] ? __pfx__printk+0x10/0x10 [ 574.075300][ T30] ? __wake_up_klogd+0xcc/0x110 [ 574.080204][ T30] ? __pfx__printk+0x10/0x10 [ 574.084833][ T30] ? __rcu_read_unlock+0xa1/0x110 [ 574.089895][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 574.095909][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 574.101927][ T30] watchdog+0xfde/0x1020 [ 574.106211][ T30] ? watchdog+0x1ea/0x1020 [ 574.110663][ T30] ? __pfx_watchdog+0x10/0x10 [ 574.115371][ T30] kthread+0x2f0/0x390 [ 574.119474][ T30] ? __pfx_watchdog+0x10/0x10 [ 574.124176][ T30] ? __pfx_kthread+0x10/0x10 [ 574.128804][ T30] ret_from_fork+0x4b/0x80 [ 574.133255][ T30] ? __pfx_kthread+0x10/0x10 [ 574.137870][ T30] ret_from_fork_asm+0x1a/0x30 [ 574.142691][ T30] [ 574.145916][ T30] Sending NMI from CPU 0 to CPUs 1: [ 574.151169][ C1] NMI backtrace for cpu 1 [ 574.151182][ C1] CPU: 1 PID: 5113 Comm: syz-executor153 Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 574.151201][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 574.151216][ C1] RIP: 0010:check_preemption_disabled+0x4/0x120 [ 574.151247][ C1] Code: 8c 48 c7 c6 60 f6 1f 8c eb 1c 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 <41> 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 [ 574.151261][ C1] RSP: 0018:ffffc90003fc65a8 EFLAGS: 00000046 [ 574.151277][ C1] RAX: 1ffff110037e951a RBX: 0000000000000246 RCX: ffffc90003fc6603 [ 574.151291][ C1] RDX: 0000000000000001 RSI: ffffffff8bcacd00 RDI: ffffffff8c1ff680 [ 574.151303][ C1] RBP: ffffc90003fc66f0 R08: ffffffff8fad9aaf R09: 1ffffffff1f5b355 [ 574.151316][ C1] R10: dffffc0000000000 R11: fffffbfff1f5b356 R12: 1ffff920007f8cc4 [ 574.151329][ C1] R13: 0000000000000246 R14: ffffc90003fc6650 R15: dffffc0000000000 [ 574.151342][ C1] FS: 000055557b5d4380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 574.151357][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 574.151369][ C1] CR2: 000055bf7c8bdde8 CR3: 000000002261a000 CR4: 00000000003506f0 [ 574.151385][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 574.151395][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 574.151406][ C1] Call Trace: [ 574.151414][ C1] [ 574.151422][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 574.151444][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 574.151465][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 574.151495][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 574.151516][ C1] ? nmi_handle+0x14f/0x5a0 [ 574.151542][ C1] ? nmi_handle+0x2a/0x5a0 [ 574.151569][ C1] ? check_preemption_disabled+0x4/0x120 [ 574.151587][ C1] ? default_do_nmi+0x63/0x160 [ 574.151610][ C1] ? exc_nmi+0x123/0x1f0 [ 574.151630][ C1] ? end_repeat_nmi+0xf/0x53 [ 574.151656][ C1] ? check_preemption_disabled+0x4/0x120 [ 574.151675][ C1] ? check_preemption_disabled+0x4/0x120 [ 574.151695][ C1] ? check_preemption_disabled+0x4/0x120 [ 574.151713][ C1] [ 574.151719][ C1] [ 574.151725][ C1] lock_release+0x5c4/0x9f0 [ 574.151745][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 574.151764][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.151785][ C1] ? __pfx_lock_release+0x10/0x10 [ 574.151803][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.151834][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.151854][ C1] tcf_idr_check_alloc+0xff/0x900 [ 574.151877][ C1] ? __pfx_tcf_idr_check_alloc+0x10/0x10 [ 574.151898][ C1] ? __nla_parse+0x40/0x60 [ 574.151924][ C1] tcf_police_init+0x29b/0x17c0 [ 574.151946][ C1] ? __sock_sendmsg+0x221/0x270 [ 574.151968][ C1] ? ____sys_sendmsg+0x525/0x7d0 [ 574.151994][ C1] ? __pfx_tcf_police_init+0x10/0x10 [ 574.152032][ C1] ? nla_memcpy+0x5d/0xc0 [ 574.152055][ C1] ? __asan_memcpy+0x40/0x70 [ 574.152075][ C1] ? __pfx_tcf_police_init+0x10/0x10 [ 574.152098][ C1] tcf_action_init_1+0x5d7/0x890 [ 574.152124][ C1] ? __pfx_tcf_action_init_1+0x10/0x10 [ 574.152156][ C1] ? tcf_action_fill_size+0x1e/0x2d0 [ 574.152180][ C1] tcf_action_init+0x2e4/0x940 [ 574.152207][ C1] ? __pfx_tcf_action_init+0x10/0x10 [ 574.152256][ C1] ? apparmor_capable+0x138/0x1b0 [ 574.152286][ C1] tc_ctl_action+0x47d/0xcf0 [ 574.152308][ C1] ? is_bpf_text_address+0x26/0x2a0 [ 574.152332][ C1] ? __pfx_tc_ctl_action+0x10/0x10 [ 574.152367][ C1] ? trace_contention_end+0x3c/0x120 [ 574.152391][ C1] ? __mutex_lock+0x2ef/0xd70 [ 574.152421][ C1] ? __pfx___mutex_lock+0x10/0x10 [ 574.152452][ C1] ? __pfx_tc_ctl_action+0x10/0x10 [ 574.152480][ C1] rtnetlink_rcv_msg+0x89b/0x1180 [ 574.152509][ C1] ? rtnetlink_rcv_msg+0x208/0x1180 [ 574.152533][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 574.152555][ C1] ? is_bpf_text_address+0x285/0x2a0 [ 574.152578][ C1] ? __pfx_validate_chain+0x10/0x10 [ 574.152600][ C1] ? __pfx_validate_chain+0x10/0x10 [ 574.152622][ C1] ? arch_stack_walk+0x16d/0x1b0 [ 574.152654][ C1] ? mark_lock+0x9a/0x350 [ 574.152673][ C1] ? __pfx_validate_chain+0x10/0x10 [ 574.152697][ C1] ? __lock_acquire+0x1346/0x1fd0 [ 574.152723][ C1] ? mark_lock+0x9a/0x350 [ 574.152744][ C1] ? __lock_acquire+0x1346/0x1fd0 [ 574.152772][ C1] netlink_rcv_skb+0x1e3/0x430 [ 574.152797][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 574.152821][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 574.152861][ C1] ? netlink_deliver_tap+0x2e/0x1b0 [ 574.152886][ C1] netlink_unicast+0x7ea/0x980 [ 574.152912][ C1] ? __pfx_netlink_unicast+0x10/0x10 [ 574.152933][ C1] ? __virt_addr_valid+0x183/0x520 [ 574.152958][ C1] ? __check_object_size+0x49c/0x900 [ 574.152974][ C1] ? bpf_lsm_netlink_send+0x9/0x10 [ 574.153002][ C1] netlink_sendmsg+0x8db/0xcb0 [ 574.153032][ C1] ? __pfx_netlink_sendmsg+0x10/0x10 [ 574.153058][ C1] ? __import_iovec+0x536/0x820 [ 574.153082][ C1] ? aa_sock_msg_perm+0x91/0x160 [ 574.153103][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 574.153120][ C1] ? security_socket_sendmsg+0x87/0xb0 [ 574.153147][ C1] ? __pfx_netlink_sendmsg+0x10/0x10 [ 574.153170][ C1] __sock_sendmsg+0x221/0x270 [ 574.153195][ C1] ____sys_sendmsg+0x525/0x7d0 [ 574.153218][ C1] ? __pfx_____sys_sendmsg+0x10/0x10 [ 574.153245][ C1] __sys_sendmsg+0x2b0/0x3a0 [ 574.153265][ C1] ? __pfx___sys_sendmsg+0x10/0x10 [ 574.153299][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 574.153322][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 574.153342][ C1] ? exc_page_fault+0x590/0x8c0 [ 574.153369][ C1] ? do_syscall_64+0xb6/0x230 [ 574.153387][ C1] do_syscall_64+0xf3/0x230 [ 574.153405][ C1] ? clear_bhb_loop+0x35/0x90 [ 574.153425][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 574.153445][ C1] RIP: 0033:0x7f7074ffadf9 [ 574.153469][ 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 [ 574.153483][ C1] RSP: 002b:00007fffccec3f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 574.153500][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7074ffadf9 [ 574.153512][ C1] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 574.153523][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 [ 574.153533][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 574.153543][ C1] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 574.153561][ C1] [ 574.153569][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.400 msecs [ 574.932581][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 574.939676][ T30] CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 574.949612][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 574.959711][ T30] Call Trace: [ 574.963024][ T30] [ 574.965982][ T30] dump_stack_lvl+0x241/0x360 [ 574.970697][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 574.975923][ T30] ? __pfx__printk+0x10/0x10 [ 574.980536][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 574.986540][ T30] ? vscnprintf+0x5d/0x90 [ 574.990888][ T30] panic+0x349/0x860 [ 574.994902][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 575.001108][ T30] ? __pfx_panic+0x10/0x10 [ 575.005549][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 575.011033][ T30] ? __irq_work_queue_local+0x137/0x410 [ 575.016690][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 575.022155][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 575.028497][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 575.034756][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 575.040923][ T30] watchdog+0x101d/0x1020 [ 575.045354][ T30] ? watchdog+0x1ea/0x1020 [ 575.049788][ T30] ? __pfx_watchdog+0x10/0x10 [ 575.054475][ T30] kthread+0x2f0/0x390 [ 575.058650][ T30] ? __pfx_watchdog+0x10/0x10 [ 575.063343][ T30] ? __pfx_kthread+0x10/0x10 [ 575.067954][ T30] ret_from_fork+0x4b/0x80 [ 575.072387][ T30] ? __pfx_kthread+0x10/0x10 [ 575.077020][ T30] ret_from_fork_asm+0x1a/0x30 [ 575.081813][ T30] [ 575.084986][ T30] Kernel Offset: disabled [ 575.089327][ T30] Rebooting in 86400 seconds..