Warning: Permanently added '10.128.1.25' (ED25519) to the list of known hosts. executing program [ 573.529484][ T30] INFO: task kworker/u8:10:2832 blocked for more than 143 seconds. [ 573.537711][ T30] Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 573.546266][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 573.555287][ T30] task:kworker/u8:10 state:D stack:22184 pid:2832 tgid:2832 ppid:2 flags:0x00004000 [ 573.565796][ T30] Workqueue: ipv6_addrconf addrconf_verify_work [ 573.572370][ T30] Call Trace: [ 573.575680][ T30] [ 573.578637][ T30] __schedule+0x17e8/0x4a20 [ 573.583821][ T30] ? __pfx___schedule+0x10/0x10 [ 573.588741][ T30] ? __pfx_lock_release+0x10/0x10 [ 573.594129][ T30] ? __mutex_trylock_common+0x92/0x2e0 [ 573.600215][ T30] ? kthread_data+0x52/0xd0 [ 573.604772][ T30] ? schedule+0x90/0x320 [ 573.609060][ T30] ? wq_worker_sleeping+0x66/0x240 [ 573.615025][ T30] ? schedule+0x90/0x320 [ 573.619534][ T30] schedule+0x14b/0x320 [ 573.623826][ T30] schedule_preempt_disabled+0x13/0x30 [ 573.629592][ T30] __mutex_lock+0x6a4/0xd70 [ 573.634155][ T30] ? __mutex_lock+0x527/0xd70 [ 573.638874][ T30] ? addrconf_verify_work+0x19/0x30 [ 573.644615][ T30] ? __pfx___mutex_lock+0x10/0x10 [ 573.650200][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 573.656244][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 573.663677][ T30] ? process_scheduled_works+0x945/0x1830 [ 573.669796][ T30] addrconf_verify_work+0x19/0x30 [ 573.674868][ T30] process_scheduled_works+0xa2c/0x1830 [ 573.681015][ T30] ? __pfx_process_scheduled_works+0x10/0x10 [ 573.687055][ T30] ? assign_work+0x364/0x3d0 [ 573.699260][ T30] worker_thread+0x86d/0xd70 [ 573.703956][ T30] ? __kthread_parkme+0x169/0x1d0 [ 573.709032][ T30] ? __pfx_worker_thread+0x10/0x10 [ 573.729248][ T30] kthread+0x2f0/0x390 [ 573.733406][ T30] ? __pfx_worker_thread+0x10/0x10 [ 573.738555][ T30] ? __pfx_kthread+0x10/0x10 [ 573.759277][ T30] ret_from_fork+0x4b/0x80 [ 573.763856][ T30] ? __pfx_kthread+0x10/0x10 [ 573.768486][ T30] ret_from_fork_asm+0x1a/0x30 [ 573.789270][ T30] [ 573.792368][ T30] [ 573.792368][ T30] Showing all locks held in the system: [ 573.809748][ T30] 1 lock held by khungtaskd/30: [ 573.814642][ T30] #0: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 573.839271][ T30] 3 locks held by kworker/0:2/784: [ 573.844462][ T30] 3 locks held by kworker/u8:10/2832: [ 573.859323][ T30] #0: ffff88802a5e0148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 [ 573.889258][ T30] #1: ffffc90009c67d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 [ 573.919307][ T30] #2: ffffffff8f5e7648 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 [ 573.928915][ T30] 2 locks held by getty/4848: [ 573.939281][ T30] #0: ffff88802aa8e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 573.949166][ T30] #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 [ 573.989302][ T30] 1 lock held by syz-executor330/5122: [ 573.994870][ T30] [ 573.997218][ T30] ============================================= [ 573.997218][ T30] [ 574.019293][ T30] NMI backtrace for cpu 0 [ 574.023686][ T30] CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 574.033589][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 574.043655][ T30] Call Trace: [ 574.046953][ T30] [ 574.049921][ T30] dump_stack_lvl+0x241/0x360 [ 574.054623][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 574.059836][ T30] ? __pfx__printk+0x10/0x10 [ 574.064441][ T30] ? vprintk_emit+0x631/0x770 [ 574.069138][ T30] ? __pfx_vprintk_emit+0x10/0x10 [ 574.074191][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 574.079161][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 574.084645][ T30] ? _printk+0xd5/0x120 [ 574.088847][ T30] ? __pfx__printk+0x10/0x10 [ 574.093459][ T30] ? __wake_up_klogd+0xcc/0x110 [ 574.098336][ T30] ? __pfx__printk+0x10/0x10 [ 574.102951][ T30] ? __rcu_read_unlock+0xa1/0x110 [ 574.108004][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 574.114002][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 574.120003][ T30] watchdog+0xfde/0x1020 [ 574.124257][ T30] ? watchdog+0x1ea/0x1020 [ 574.128688][ T30] ? __pfx_watchdog+0x10/0x10 [ 574.133379][ T30] kthread+0x2f0/0x390 [ 574.137483][ T30] ? __pfx_watchdog+0x10/0x10 [ 574.142178][ T30] ? __pfx_kthread+0x10/0x10 [ 574.146782][ T30] ret_from_fork+0x4b/0x80 [ 574.151215][ T30] ? __pfx_kthread+0x10/0x10 [ 574.155816][ T30] ret_from_fork_asm+0x1a/0x30 [ 574.160607][ T30] [ 574.163833][ T30] Sending NMI from CPU 0 to CPUs 1: [ 574.169174][ C1] NMI backtrace for cpu 1 [ 574.169190][ C1] CPU: 1 PID: 5122 Comm: syz-executor330 Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 574.169212][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 574.169229][ C1] RIP: 0010:kasan_check_range+0x7/0x290 [ 574.169263][ C1] Code: ff 1b e4 ff 90 0f 0b 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 66 0f 1f 00 55 41 57 <41> 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 [ 574.169277][ C1] RSP: 0018:ffffc900032be498 EFLAGS: 00000046 [ 574.169293][ C1] RAX: 0000000000000001 RBX: 0000000000000077 RCX: ffffffff81727a49 [ 574.169306][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92fb5588 [ 574.169317][ C1] RBP: beb0d827c32aa34a R08: ffffffff92fb5587 R09: 1ffffffff25f6ab0 [ 574.169330][ C1] R10: dffffc0000000000 R11: fffffbfff25f6ab1 R12: ffff88807d943c00 [ 574.169343][ C1] R13: ffff88807d943c00 R14: 0000000000000000 R15: ffff88807d943c00 [ 574.169355][ C1] FS: 0000555566f1c380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 574.169371][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 574.169383][ C1] CR2: 00005633ff8a77f0 CR3: 0000000077126000 CR4: 00000000003506f0 [ 574.169398][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 574.169408][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 574.169419][ C1] Call Trace: [ 574.169427][ C1] [ 574.169435][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 574.169458][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 574.169478][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 574.169508][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 574.169530][ C1] ? nmi_handle+0x14f/0x5a0 [ 574.169556][ C1] ? nmi_handle+0x2a/0x5a0 [ 574.169583][ C1] ? kasan_check_range+0x7/0x290 [ 574.169606][ C1] ? default_do_nmi+0x63/0x160 [ 574.169629][ C1] ? exc_nmi+0x123/0x1f0 [ 574.169649][ C1] ? end_repeat_nmi+0xf/0x53 [ 574.169679][ C1] ? __lock_acquire+0xf19/0x1fd0 [ 574.169698][ C1] ? kasan_check_range+0x7/0x290 [ 574.169721][ C1] ? kasan_check_range+0x7/0x290 [ 574.169745][ C1] ? kasan_check_range+0x7/0x290 [ 574.169775][ C1] [ 574.169780][ C1] [ 574.169786][ C1] __lock_acquire+0xf19/0x1fd0 [ 574.169813][ C1] lock_acquire+0x1ed/0x550 [ 574.169831][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.169855][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 574.169873][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.169893][ C1] ? __pfx_lock_release+0x10/0x10 [ 574.169910][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.169931][ C1] ? tcf_idr_check_alloc+0x141/0x900 [ 574.169953][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.169972][ C1] tcf_idr_check_alloc+0x12d/0x900 [ 574.169991][ C1] ? tcf_idr_check_alloc+0x110/0x900 [ 574.170014][ C1] ? __pfx_tcf_idr_check_alloc+0x10/0x10 [ 574.170035][ C1] ? __nla_parse+0x40/0x60 [ 574.170061][ C1] tcf_police_init+0x29b/0x17c0 [ 574.170082][ C1] ? __sock_sendmsg+0x221/0x270 [ 574.170105][ C1] ? ____sys_sendmsg+0x525/0x7d0 [ 574.170130][ C1] ? __pfx_tcf_police_init+0x10/0x10 [ 574.170164][ C1] ? nla_memcpy+0x5d/0xc0 [ 574.170187][ C1] ? __asan_memcpy+0x40/0x70 [ 574.170208][ C1] ? __pfx_tcf_police_init+0x10/0x10 [ 574.170230][ C1] tcf_action_init_1+0x5d7/0x890 [ 574.170256][ C1] ? __pfx_tcf_action_init_1+0x10/0x10 [ 574.170289][ C1] ? tcf_action_fill_size+0x1e/0x2d0 [ 574.170311][ C1] tcf_action_init+0x2e4/0x940 [ 574.170338][ C1] ? __pfx_tcf_action_init+0x10/0x10 [ 574.170387][ C1] ? apparmor_capable+0x138/0x1b0 [ 574.170418][ C1] tc_ctl_action+0x47d/0xcf0 [ 574.170440][ C1] ? is_bpf_text_address+0x26/0x2a0 [ 574.170464][ C1] ? __pfx_tc_ctl_action+0x10/0x10 [ 574.170499][ C1] ? trace_contention_end+0x3c/0x120 [ 574.170524][ C1] ? __mutex_lock+0x2ef/0xd70 [ 574.170554][ C1] ? __pfx___mutex_lock+0x10/0x10 [ 574.170584][ C1] ? __pfx_tc_ctl_action+0x10/0x10 [ 574.170605][ C1] rtnetlink_rcv_msg+0x89b/0x1180 [ 574.170630][ C1] ? rtnetlink_rcv_msg+0x208/0x1180 [ 574.170655][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 574.170681][ C1] ? is_bpf_text_address+0x285/0x2a0 [ 574.170704][ C1] ? __pfx_validate_chain+0x10/0x10 [ 574.170726][ C1] ? __pfx_validate_chain+0x10/0x10 [ 574.170748][ C1] ? arch_stack_walk+0x16d/0x1b0 [ 574.170785][ C1] ? mark_lock+0x9a/0x350 [ 574.170804][ C1] ? __pfx_validate_chain+0x10/0x10 [ 574.170827][ C1] ? __lock_acquire+0x1346/0x1fd0 [ 574.170853][ C1] ? mark_lock+0x9a/0x350 [ 574.170874][ C1] ? __lock_acquire+0x1346/0x1fd0 [ 574.170902][ C1] netlink_rcv_skb+0x1e3/0x430 [ 574.170927][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 574.170951][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 574.170986][ C1] ? netlink_deliver_tap+0x2e/0x1b0 [ 574.171011][ C1] netlink_unicast+0x7ea/0x980 [ 574.171036][ C1] ? __pfx_netlink_unicast+0x10/0x10 [ 574.171056][ C1] ? __virt_addr_valid+0x183/0x520 [ 574.171082][ C1] ? __check_object_size+0x49c/0x900 [ 574.171098][ C1] ? bpf_lsm_netlink_send+0x9/0x10 [ 574.171127][ C1] netlink_sendmsg+0x8db/0xcb0 [ 574.171157][ C1] ? __pfx_netlink_sendmsg+0x10/0x10 [ 574.171183][ C1] ? __import_iovec+0x536/0x820 [ 574.171206][ C1] ? aa_sock_msg_perm+0x91/0x160 [ 574.171227][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 574.171244][ C1] ? security_socket_sendmsg+0x87/0xb0 [ 574.171271][ C1] ? __pfx_netlink_sendmsg+0x10/0x10 [ 574.171294][ C1] __sock_sendmsg+0x221/0x270 [ 574.171319][ C1] ____sys_sendmsg+0x525/0x7d0 [ 574.171342][ C1] ? __pfx_____sys_sendmsg+0x10/0x10 [ 574.171369][ C1] __sys_sendmsg+0x2b0/0x3a0 [ 574.171388][ C1] ? __pfx___sys_sendmsg+0x10/0x10 [ 574.171422][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 574.171445][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 574.171464][ C1] ? exc_page_fault+0x590/0x8c0 [ 574.171491][ C1] ? do_syscall_64+0xb6/0x230 [ 574.171509][ C1] do_syscall_64+0xf3/0x230 [ 574.171527][ C1] ? clear_bhb_loop+0x35/0x90 [ 574.171548][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 574.171567][ C1] RIP: 0033:0x7fd97710fdf9 [ 574.171589][ 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 [ 574.171602][ C1] RSP: 002b:00007fffb8ef2618 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 574.171620][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd97710fdf9 [ 574.171632][ C1] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 574.171642][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 [ 574.171652][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 574.171663][ C1] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 [ 574.171680][ C1] [ 574.171688][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.513 msecs [ 574.329256][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 574.329277][ T30] CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc2-syzkaller-00761-g3ec8d7572a69 #0 [ 574.858265][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 574.868333][ T30] Call Trace: [ 574.871620][ T30] [ 574.874561][ T30] dump_stack_lvl+0x241/0x360 [ 574.879259][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 574.884493][ T30] ? __pfx__printk+0x10/0x10 [ 574.889152][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 574.895176][ T30] ? vscnprintf+0x5d/0x90 [ 574.899532][ T30] panic+0x349/0x860 [ 574.903476][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 574.909665][ T30] ? __pfx_panic+0x10/0x10 [ 574.914103][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 574.919502][ T30] ? __irq_work_queue_local+0x137/0x410 [ 574.925071][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 574.930469][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 574.936656][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 574.942859][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 574.949056][ T30] watchdog+0x101d/0x1020 [ 574.953426][ T30] ? watchdog+0x1ea/0x1020 [ 574.957872][ T30] ? __pfx_watchdog+0x10/0x10 [ 574.962582][ T30] kthread+0x2f0/0x390 [ 574.966671][ T30] ? __pfx_watchdog+0x10/0x10 [ 574.971362][ T30] ? __pfx_kthread+0x10/0x10 [ 574.975965][ T30] ret_from_fork+0x4b/0x80 [ 574.980398][ T30] ? __pfx_kthread+0x10/0x10 [ 574.985000][ T30] ret_from_fork_asm+0x1a/0x30 [ 574.989797][ T30] [ 574.993085][ T30] Kernel Offset: disabled [ 574.997417][ T30] Rebooting in 86400 seconds..