Warning: Permanently added '10.128.0.185' (ECDSA) to the list of known hosts. executing program executing program [ 608.741420][ T8500] IPVS: ftp: loaded support on port[0] = 21 [ 864.727093][ T1656] INFO: task kworker/0:3:3204 blocked for more than 143 seconds. [ 864.735004][ T1656] Not tainted 5.11.0-rc3-syzkaller #0 [ 864.743892][ T1656] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 864.753523][ T1656] task:kworker/0:3 state:D stack:26984 pid: 3204 ppid: 2 flags:0x00004000 [ 864.763629][ T1656] Workqueue: ipv6_addrconf addrconf_verify_work [ 864.770900][ T1656] Call Trace: [ 864.774247][ T1656] __schedule+0x90c/0x21a0 [ 864.779920][ T1656] ? io_schedule_timeout+0x140/0x140 [ 864.785252][ T1656] ? _raw_spin_unlock_irq+0x1f/0x40 [ 864.791837][ T1656] ? lockdep_hardirqs_on+0x79/0x100 [ 864.797882][ T1656] schedule+0xcf/0x270 [ 864.801976][ T1656] schedule_preempt_disabled+0xf/0x20 [ 864.808625][ T1656] __mutex_lock+0x81a/0x1110 [ 864.813241][ T1656] ? addrconf_verify_work+0xa/0x20 [ 864.819633][ T1656] ? mutex_lock_io_nested+0xf60/0xf60 [ 864.825042][ T1656] ? lock_release+0x710/0x710 [ 864.831586][ T1656] ? lock_downgrade+0x6d0/0x6d0 [ 864.836483][ T1656] addrconf_verify_work+0xa/0x20 [ 864.843899][ T1656] process_one_work+0x98d/0x15f0 [ 864.850148][ T1656] ? pwq_dec_nr_in_flight+0x320/0x320 [ 864.855567][ T1656] ? rwlock_bug.part.0+0x90/0x90 [ 864.861727][ T1656] ? _raw_spin_lock_irq+0x41/0x50 [ 864.866801][ T1656] worker_thread+0x64c/0x1120 [ 864.872853][ T1656] ? __kthread_parkme+0x13f/0x1e0 [ 864.878698][ T1656] ? process_one_work+0x15f0/0x15f0 [ 864.883927][ T1656] kthread+0x3b1/0x4a0 [ 864.889272][ T1656] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 864.895453][ T1656] ret_from_fork+0x1f/0x30 [ 864.901278][ T1656] [ 864.901278][ T1656] Showing all locks held in the system: [ 864.909937][ T1656] 1 lock held by khungtaskd/1656: [ 864.914978][ T1656] #0: ffffffff8b373920 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 864.927139][ T1656] 3 locks held by kworker/0:3/3204: [ 864.932354][ T1656] #0: ffff888020da9538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 [ 864.944644][ T1656] #1: ffffc9000221fda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 [ 864.955808][ T1656] #2: ffffffff8ca586a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 864.966452][ T1656] 1 lock held by in:imklog/8174: [ 864.973871][ T1656] #0: ffff888010fd34f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 864.984018][ T1656] 2 locks held by syz-executor314/8522: [ 864.990410][ T1656] [ 864.992745][ T1656] ============================================= [ 864.992745][ T1656] [ 865.002772][ T1656] NMI backtrace for cpu 0 [ 865.007212][ T1656] CPU: 0 PID: 1656 Comm: khungtaskd Not tainted 5.11.0-rc3-syzkaller #0 [ 865.015587][ T1656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 865.025747][ T1656] Call Trace: [ 865.029036][ T1656] dump_stack+0x107/0x163 [ 865.033444][ T1656] nmi_cpu_backtrace.cold+0x44/0xd7 [ 865.038760][ T1656] ? lapic_can_unplug_cpu+0x80/0x80 [ 865.044017][ T1656] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 865.050068][ T1656] watchdog+0xd43/0xfa0 [ 865.054295][ T1656] ? reset_hung_task_detector+0x30/0x30 [ 865.059855][ T1656] kthread+0x3b1/0x4a0 [ 865.063933][ T1656] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 865.069841][ T1656] ret_from_fork+0x1f/0x30 [ 865.074753][ T1656] Sending NMI from CPU 0 to CPUs 1: [ 865.081725][ C1] NMI backtrace for cpu 1 [ 865.081735][ C1] CPU: 1 PID: 8522 Comm: syz-executor314 Not tainted 5.11.0-rc3-syzkaller #0 [ 865.081746][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 865.081756][ C1] RIP: 0010:rcu_lockdep_current_cpu_online+0xcb/0x150 [ 865.081767][ C1] Code: 03 80 3c 02 00 75 7b 48 8d 7d 70 48 8b 5b 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 66 48 8b 45 70 <48> 85 c3 74 11 b8 01 00 00 00 65 ff 0d e4 9b a2 7e 74 2a 5b 5d c3 [ 865.081783][ C1] RSP: 0018:ffffc90001c1eb98 EFLAGS: 00000246 [ 865.081797][ C1] RAX: 0000000000000003 RBX: 0000000000000002 RCX: ffffffff8158c5c1 [ 865.081806][ C1] RDX: 1ffffffff166f786 RSI: 0000000000000002 RDI: ffffffff8b37bc30 [ 865.081815][ C1] RBP: ffffffff8b37bbc0 R08: 0000000000000000 R09: ffffffff8d03798f [ 865.081824][ C1] R10: fffffbfff1a06f31 R11: 0000000000000000 R12: 0000000000000001 [ 865.081833][ C1] R13: 0000000000000001 R14: 1ffff92000383d95 R15: ffff888016b6fc00 [ 865.081842][ C1] FS: 0000000002059880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 865.081852][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 865.081860][ C1] CR2: 00007fb19cd4a028 CR3: 000000001aed4000 CR4: 00000000001506e0 [ 865.081869][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 865.081878][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 865.081885][ C1] Call Trace: [ 865.081890][ C1] rcu_read_lock_sched_held+0x25/0x70 [ 865.081897][ C1] lock_release+0x5b7/0x710 [ 865.081903][ C1] ? tcf_idr_check_alloc+0x29e/0x3b0 [ 865.081909][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 865.081915][ C1] ? tcf_idr_check_alloc+0x78/0x3b0 [ 865.081921][ C1] ? mutex_lock_io_nested+0xf60/0xf60 [ 865.081928][ C1] __mutex_unlock_slowpath+0x81/0x610 [ 865.081935][ C1] ? wait_for_completion_io+0x260/0x260 [ 865.081941][ C1] ? __radix_tree_lookup+0x211/0x2a0 [ 865.081948][ C1] tcf_idr_check_alloc+0x29e/0x3b0 [ 865.081954][ C1] tcf_police_init+0x34f/0x1460 [ 865.081960][ C1] ? tcf_police_cleanup+0x60/0x60 [ 865.081966][ C1] ? find_held_lock+0x2d/0x110 [ 865.081972][ C1] ? tc_lookup_action_n+0xcd/0xf0 [ 865.081978][ C1] ? kernel_text_address+0xbd/0xf0 [ 865.081985][ C1] tcf_action_init_1+0x1a3/0x990 [ 865.081991][ C1] ? tcf_action_dump_old+0x80/0x80 [ 865.081997][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 865.082005][ C1] ? kasan_save_stack+0x32/0x40 [ 865.082011][ C1] ? kasan_save_stack+0x32/0x40 [ 865.082017][ C1] ? kasan_save_stack+0x1b/0x40 [ 865.082024][ C1] ? ____kasan_kmalloc.constprop.0+0x82/0xa0 [ 865.082032][ C1] ? fw_change+0x91b/0x13e0 [ 865.082038][ C1] ? rtnetlink_rcv_msg+0x80e/0xad0 [ 865.082045][ C1] ? netlink_rcv_skb+0x153/0x420 [ 865.082052][ C1] ? netlink_unicast+0x533/0x7d0 [ 865.082058][ C1] ? netlink_sendmsg+0x856/0xd90 [ 865.082065][ C1] ? sock_sendmsg+0xcf/0x120 [ 865.082071][ C1] ? ____sys_sendmsg+0x331/0x810 [ 865.082078][ C1] tcf_exts_validate+0x138/0x420 [ 865.082085][ C1] ? tcf_exts_destroy+0xc0/0xc0 [ 865.082091][ C1] fw_set_parms+0x13d/0xaa0 [ 865.082097][ C1] ? fw_delete+0x8c0/0x8c0 [ 865.082104][ C1] ? unpoison_range+0x3a/0x60 [ 865.082110][ C1] fw_change+0xa30/0x13e0 [ 865.082116][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 865.082123][ C1] ? fw_set_parms+0xaa0/0xaa0 [ 865.082129][ C1] ? tc_new_tfilter+0x132a/0x2120 [ 865.082136][ C1] tc_new_tfilter+0x1394/0x2120 [ 865.082142][ C1] ? fw_set_parms+0xaa0/0xaa0 [ 865.082149][ C1] ? tc_del_tfilter+0x15b0/0x15b0 [ 865.082156][ C1] ? lock_chain_count+0x20/0x20 [ 865.082162][ C1] ? kernel_text_address+0xbd/0xf0 [ 865.082169][ C1] ? tc_del_tfilter+0x15b0/0x15b0 [ 865.082176][ C1] rtnetlink_rcv_msg+0x80e/0xad0 [ 865.082183][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 865.082190][ C1] netlink_rcv_skb+0x153/0x420 [ 865.082196][ C1] ? rtnetlink_put_metrics+0x510/0x510 [ 865.082203][ C1] ? netlink_ack+0xaa0/0xaa0 [ 865.082210][ C1] ? netlink_deliver_tap+0x227/0xb70 [ 865.082217][ C1] netlink_unicast+0x533/0x7d0 [ 865.082223][ C1] ? netlink_attachskb+0x870/0x870 [ 865.082230][ C1] ? _copy_from_iter_full+0x275/0x850 [ 865.082237][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 865.082245][ C1] ? __phys_addr_symbol+0x2c/0x70 [ 865.082251][ C1] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 865.082257][ C1] ? __check_object_size+0x171/0x3f0 [ 865.082262][ C1] netlink_sendmsg+0x856/0xd90 [ 865.082265][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 865.082269][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 865.082273][ C1] ? netlink_unicast+0x7d0/0x7d0 [ 865.082276][ C1] sock_sendmsg+0xcf/0x120 [ 865.082280][ C1] ____sys_sendmsg+0x331/0x810 [ 865.082283][ C1] ? kernel_sendmsg+0x50/0x50 [ 865.082286][ C1] ? do_recvmmsg+0x6c0/0x6c0 [ 865.082290][ C1] ? __lock_acquire+0x16c2/0x54f0 [ 865.082293][ C1] ___sys_sendmsg+0xf3/0x170 [ 865.082297][ C1] ? sendmsg_copy_msghdr+0x160/0x160 [ 865.082300][ C1] ? find_held_lock+0x2d/0x110 [ 865.082304][ C1] ? __might_fault+0xd3/0x180 [ 865.082307][ C1] ? lock_downgrade+0x6d0/0x6d0 [ 865.082311][ C1] __sys_sendmmsg+0x195/0x470 [ 865.082314][ C1] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 865.082318][ C1] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 865.082322][ C1] ? sockfd_lookup_light+0xc5/0x180 [ 865.082325][ C1] ? __sys_sendmsg+0x10c/0x1b0 [ 865.082329][ C1] ? __sys_sendmsg_sock+0xb0/0xb0 [ 865.082333][ C1] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 865.082337][ C1] __x64_sys_sendmmsg+0x99/0x100 [ 865.082340][ C1] ? syscall_enter_from_user_mode+0x1d/0x50 [ 865.082344][ C1] do_syscall_64+0x2d/0x70 [ 865.082348][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 865.082351][ C1] RIP: 0033:0x441739 [ 865.082357][ 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 [ 865.082367][ C1] RSP: 002b:00007fff18bf6248 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 865.082376][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441739 [ 865.082381][ C1] RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003 [ 865.082386][ C1] RBP: 00007fff18bf6250 R08: 0000000100000000 R09: 0000000100000000 [ 865.082392][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000094a17 [ 865.082397][ C1] R13: 0000000000402610 R14: 0000000000000000 R15: 0000000000000000 [ 865.082403][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.675 msecs [ 865.082717][ T1656] Kernel panic - not syncing: hung_task: blocked tasks [ 865.724731][ T1656] CPU: 0 PID: 1656 Comm: khungtaskd Not tainted 5.11.0-rc3-syzkaller #0 [ 865.733069][ T1656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 865.743137][ T1656] Call Trace: [ 865.746425][ T1656] dump_stack+0x107/0x163 [ 865.750772][ T1656] panic+0x306/0x73d [ 865.754718][ T1656] ? __warn_printk+0xf3/0xf3 [ 865.759345][ T1656] ? lapic_can_unplug_cpu+0x80/0x80 [ 865.764556][ T1656] ? preempt_schedule_thunk+0x16/0x18 [ 865.769941][ T1656] ? nmi_trigger_cpumask_backtrace+0x196/0x230 [ 865.776112][ T1656] ? watchdog.cold+0x5/0x158 [ 865.780748][ T1656] watchdog.cold+0x16/0x158 [ 865.785269][ T1656] ? reset_hung_task_detector+0x30/0x30 [ 865.790837][ T1656] kthread+0x3b1/0x4a0 [ 865.794916][ T1656] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 865.800824][ T1656] ret_from_fork+0x1f/0x30 [ 865.805955][ T1656] Kernel Offset: disabled [ 865.810300][ T1656] Rebooting in 86400 seconds..