Warning: Permanently added '10.128.0.218' (ECDSA) to the list of known hosts. executing program executing program [ 489.777857][ T6863] IPVS: ftp: loaded support on port[0] = 21 [ 657.501105][ T1177] INFO: task kworker/0:0:5 blocked for more than 143 seconds. [ 657.509175][ T1177] Not tainted 5.9.0-syzkaller #0 [ 657.518675][ T1177] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 657.528378][ T1177] task:kworker/0:0 state:D stack:26680 pid: 5 ppid: 2 flags:0x00004000 [ 657.538902][ T1177] Workqueue: ipv6_addrconf addrconf_verify_work [ 657.546950][ T1177] Call Trace: [ 657.550400][ T1177] __schedule+0xec5/0x2200 [ 657.556198][ T1177] ? io_schedule_timeout+0x140/0x140 [ 657.562430][ T1177] ? _raw_spin_unlock_irq+0x1f/0x80 [ 657.567881][ T1177] ? lockdep_hardirqs_on+0x60/0x110 [ 657.574697][ T1177] schedule+0xcf/0x270 [ 657.578784][ T1177] schedule_preempt_disabled+0xf/0x20 [ 657.585501][ T1177] __mutex_lock+0x3e2/0x10e0 [ 657.594246][ T1177] ? addrconf_verify_work+0xa/0x20 [ 657.599395][ T1177] ? mutex_lock_io_nested+0xf60/0xf60 [ 657.607168][ T1177] ? lock_release+0x7e0/0x7e0 [ 657.614155][ T1177] ? lock_downgrade+0x7a0/0x7a0 [ 657.619303][ T1177] ? lock_is_held_type+0xcf/0x110 [ 657.626025][ T1177] addrconf_verify_work+0xa/0x20 [ 657.632048][ T1177] process_one_work+0x933/0x15a0 [ 657.637099][ T1177] ? pwq_dec_nr_in_flight+0x320/0x320 [ 657.643858][ T1177] ? rwlock_bug.part.0+0x90/0x90 [ 657.648825][ T1177] worker_thread+0x64c/0x1120 [ 657.654898][ T1177] ? process_one_work+0x15a0/0x15a0 [ 657.660372][ T1177] kthread+0x3b5/0x4a0 [ 657.666716][ T1177] ? __kthread_bind_mask+0xc0/0xc0 [ 657.672939][ T1177] ret_from_fork+0x1f/0x30 [ 657.677644][ T1177] [ 657.677644][ T1177] Showing all locks held in the system: [ 657.687128][ T1177] 3 locks held by kworker/0:0/5: [ 657.693355][ T1177] #0: ffff888214ebdd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 657.705254][ T1177] #1: ffffc90000cbfda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 657.717700][ T1177] #2: ffffffff8b6c18c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 657.728142][ T1177] 1 lock held by khungtaskd/1177: [ 657.734109][ T1177] #0: ffffffff8a554a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 657.747062][ T1177] 1 lock held by in:imklog/6552: [ 657.752887][ T1177] #0: ffff888094f343b0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 657.763529][ T1177] 2 locks held by syz-executor742/6886: [ 657.769946][ T1177] [ 657.774040][ T1177] ============================================= [ 657.774040][ T1177] [ 657.783762][ T1177] NMI backtrace for cpu 0 [ 657.788577][ T1177] CPU: 0 PID: 1177 Comm: khungtaskd Not tainted 5.9.0-syzkaller #0 [ 657.796457][ T1177] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 657.806518][ T1177] Call Trace: [ 657.810214][ T1177] dump_stack+0x198/0x1fb [ 657.814652][ T1177] nmi_cpu_backtrace.cold+0x70/0xb1 [ 657.819850][ T1177] ? lapic_can_unplug_cpu+0x80/0x80 [ 657.825246][ T1177] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 657.831405][ T1177] watchdog+0xd43/0xfa0 [ 657.835671][ T1177] ? reset_hung_task_detector+0x30/0x30 [ 657.841215][ T1177] kthread+0x3b5/0x4a0 [ 657.845283][ T1177] ? __kthread_bind_mask+0xc0/0xc0 [ 657.850706][ T1177] ret_from_fork+0x1f/0x30 [ 657.855370][ T1177] Sending NMI from CPU 0 to CPUs 1: [ 657.861967][ C1] NMI backtrace for cpu 1 [ 657.861974][ C1] CPU: 1 PID: 6886 Comm: syz-executor742 Not tainted 5.9.0-syzkaller #0 [ 657.861981][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 657.861986][ C1] RIP: 0010:check_memory_region+0x16/0x180 [ 657.861998][ C1] Code: 02 0f 1f 00 48 89 f2 be f8 00 00 00 e9 43 06 21 02 0f 1f 00 48 85 f6 0f 84 70 01 00 00 49 89 f9 41 54 44 0f b6 c2 49 01 f1 55 <53> 0f 82 18 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 0f 86 [ 657.862003][ C1] RSP: 0018:ffffc90005486a60 EFLAGS: 00000096 [ 657.862012][ C1] RAX: 0000000000000003 RBX: 00000000000000e9 RCX: ffffffff815acde6 [ 657.862017][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d7149b8 [ 657.862023][ C1] RBP: ffff888093384df8 R08: 0000000000000000 R09: ffffffff8d7149c0 [ 657.862028][ C1] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880933844c0 [ 657.862034][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 657.862040][ C1] FS: 00000000026c7880(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000 [ 657.862045][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 657.862050][ C1] CR2: 00000000006cd080 CR3: 00000000973ec000 CR4: 00000000001506e0 [ 657.862055][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 657.862061][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 657.862064][ C1] Call Trace: [ 657.862068][ C1] __lock_acquire+0x13e6/0x5590 [ 657.862072][ C1] ? lockdep_hardirqs_on+0x60/0x110 [ 657.862076][ C1] ? lockdep_hardirqs_on_prepare+0x450/0x450 [ 657.862080][ C1] lock_acquire+0x219/0x9d0 [ 657.862084][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 657.862088][ C1] ? lock_release+0x7e0/0x7e0 [ 657.862092][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 657.862097][ C1] ? check_preemption_disabled+0x50/0x130 [ 657.862100][ C1] ? lock_is_held_type+0xcf/0x110 [ 657.862104][ C1] __mutex_lock+0x134/0x10e0 [ 657.862108][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 657.862112][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 657.862117][ C1] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 657.862121][ C1] ? mutex_lock_io_nested+0xf60/0xf60 [ 657.862125][ C1] ? __mutex_unlock_slowpath+0xe2/0x610 [ 657.862129][ C1] ? __sanitizer_cov_trace_pc+0x9/0x60 [ 657.862133][ C1] ? wait_for_completion+0x260/0x260 [ 657.862137][ C1] tcf_idr_check_alloc+0x78/0x3b0 [ 657.862140][ C1] tcf_police_init+0x347/0x13a0 [ 657.862144][ C1] ? tcf_police_cleanup+0x60/0x60 [ 657.862148][ C1] ? find_held_lock+0x2d/0x110 [ 657.862152][ C1] ? tc_lookup_action_n+0xcd/0xf0 [ 657.862156][ C1] tcf_action_init_1+0x1a3/0x990 [ 657.862160][ C1] ? tcf_action_dump_old+0x80/0x80 [ 657.862163][ C1] ? lock_downgrade+0x7a0/0x7a0 [ 657.862167][ C1] ? lock_is_held_type+0xcf/0x110 [ 657.862171][ C1] ? find_held_lock+0x2d/0x110 [ 657.862175][ C1] ? __mutex_unlock_slowpath+0xe2/0x610 [ 657.862179][ C1] ? wait_for_completion+0x260/0x260 [ 657.862183][ C1] tcf_exts_validate+0x138/0x420 [ 657.862187][ C1] ? tcf_exts_destroy+0xc0/0xc0 [ 657.862190][ C1] basic_change+0x47a/0x1300 [ 657.862194][ C1] ? basic_delete+0x680/0x680 [ 657.862198][ C1] ? lock_is_held_type+0xcf/0x110 [ 657.862202][ C1] tc_new_tfilter+0x1398/0x2130 [ 657.862205][ C1] ? basic_delete+0x680/0x680 [ 657.862209][ C1] ? tc_del_tfilter+0x15c0/0x15c0 [ 657.862213][ C1] ? lock_chain_count+0x20/0x20 [ 657.862217][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 657.862221][ C1] ? lock_is_held_type+0xcf/0x110 [ 657.862225][ C1] ? check_preemption_disabled+0x50/0x130 [ 657.862229][ C1] ? lock_is_held_type+0xcf/0x110 [ 657.862233][ C1] ? tc_del_tfilter+0x15c0/0x15c0 [ 657.862237][ C1] rtnetlink_rcv_msg+0x80f/0xad0 [ 657.862241][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 657.862246][ C1] ? check_preemption_disabled+0x50/0x130 [ 657.862250][ C1] netlink_rcv_skb+0x153/0x420 [ 657.862254][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 657.862257][ C1] ? netlink_ack+0xaa0/0xaa0 [ 657.862261][ C1] ? netlink_deliver_tap+0x227/0xb70 [ 657.862265][ C1] netlink_unicast+0x533/0x7d0 [ 657.862269][ C1] ? netlink_attachskb+0x810/0x810 [ 657.862273][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 657.862277][ C1] ? __check_object_size+0x171/0x3f0 [ 657.862281][ C1] netlink_sendmsg+0x856/0xd90 [ 657.862285][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 657.862289][ C1] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 657.862293][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 657.862296][ C1] sock_sendmsg+0xcf/0x120 [ 657.862300][ C1] ____sys_sendmsg+0x331/0x810 [ 657.862304][ C1] ? kernel_sendmsg+0x50/0x50 [ 657.862308][ C1] ? do_recvmmsg+0x6c0/0x6c0 [ 657.862312][ C1] ? __lock_acquire+0x16a0/0x5590 [ 657.862315][ C1] ___sys_sendmsg+0xf3/0x170 [ 657.862319][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 657.862323][ C1] ? lock_is_held_type+0xcf/0x110 [ 657.862328][ C1] ? check_preemption_disabled+0x50/0x130 [ 657.862331][ C1] ? __might_fault+0x11f/0x1d0 [ 657.862335][ C1] ? lock_downgrade+0x7a0/0x7a0 [ 657.862339][ C1] ? check_preemption_disabled+0x50/0x130 [ 657.862343][ C1] ? lock_is_held_type+0xcf/0x110 [ 657.862347][ C1] __sys_sendmmsg+0x195/0x470 [ 657.862351][ C1] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 657.862355][ C1] ? sockfd_lookup_light+0xc6/0x180 [ 657.862358][ C1] ? __sys_sendmsg+0x10c/0x1b0 [ 657.862362][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 657.862366][ C1] ? check_preemption_disabled+0x50/0x130 [ 657.862376][ C1] __x64_sys_sendmmsg+0x99/0x100 [ 657.862381][ C1] ? syscall_enter_from_user_mode+0x1d/0x60 [ 657.862384][ C1] do_syscall_64+0x2d/0x70 [ 657.862389][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 657.862392][ C1] RIP: 0033:0x441719 [ 657.862404][ C1] Code: e8 5c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 657.862408][ C1] RSP: 002b:00007ffdcf02fcd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 657.862418][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441719 [ 657.862424][ C1] RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003 [ 657.862429][ C1] RBP: 00007ffdcf02fce0 R08: 0000000100000000 R09: 0000000100000000 [ 657.862434][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000007797d [ 657.862440][ C1] R13: 00000000004025f0 R14: 0000000000000000 R15: 0000000000000000 [ 657.862447][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.235 msecs [ 657.880850][ T1177] Kernel panic - not syncing: hung_task: blocked tasks [ 658.523755][ T1177] CPU: 0 PID: 1177 Comm: khungtaskd Not tainted 5.9.0-syzkaller #0 [ 658.532593][ T1177] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 658.542743][ T1177] Call Trace: [ 658.546222][ T1177] dump_stack+0x198/0x1fb [ 658.551414][ T1177] panic+0x382/0x7fb [ 658.555402][ T1177] ? __warn_printk+0xf3/0xf3 [ 658.559997][ T1177] ? lapic_can_unplug_cpu+0x80/0x80 [ 658.565243][ T1177] ? preempt_schedule_thunk+0x16/0x18 [ 658.570756][ T1177] ? watchdog.cold+0x5/0x158 [ 658.575447][ T1177] ? watchdog+0xa80/0xfa0 [ 658.579865][ T1177] watchdog.cold+0x16/0x158 [ 658.584376][ T1177] ? reset_hung_task_detector+0x30/0x30 [ 658.589936][ T1177] kthread+0x3b5/0x4a0 [ 658.594117][ T1177] ? __kthread_bind_mask+0xc0/0xc0 [ 658.599319][ T1177] ret_from_fork+0x1f/0x30 [ 658.606114][ T1177] Kernel Offset: disabled [ 658.610531][ T1177] Rebooting in 86400 seconds..