Warning: Permanently added '10.128.0.171' (ECDSA) to the list of known hosts. [ 847.122184] IPVS: ftp: loaded support on port[0] = 21 [ 847.171329] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 847.188986] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 847.197566] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program executing program [ 847.219304] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 847.226414] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 847.234426] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 847.241129] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 847.251525] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1007.038532] INFO: task kworker/1:0:19 blocked for more than 140 seconds. [ 1007.045843] Not tainted 4.19.155-syzkaller #0 [ 1007.053132] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1007.062492] kworker/1:0 D26832 19 2 0x80000000 [ 1007.068300] Workqueue: ipv6_addrconf addrconf_dad_work [ 1007.074740] Call Trace: [ 1007.077426] __schedule+0x887/0x2040 [ 1007.082272] ? io_schedule_timeout+0x140/0x140 [ 1007.086925] ? lock_downgrade+0x720/0x720 [ 1007.092269] ? __mutex_lock+0x458/0x1260 [ 1007.096335] schedule+0x8d/0x1b0 [ 1007.100737] schedule_preempt_disabled+0xf/0x20 [ 1007.105425] __mutex_lock+0x647/0x1260 [ 1007.110465] ? addrconf_dad_work+0x9c/0x10a0 [ 1007.114961] ? __mutex_add_waiter+0x160/0x160 [ 1007.120683] ? lock_downgrade+0x720/0x720 [ 1007.124846] ? lock_acquire+0x170/0x3c0 [ 1007.129941] ? debug_object_deactivate+0xfc/0x2e0 [ 1007.134865] ? trace_hardirqs_off+0x64/0x200 [ 1007.140348] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1007.145465] addrconf_dad_work+0x9c/0x10a0 [ 1007.151639] ? addrconf_dad_completed+0xb60/0xb60 [ 1007.156553] process_one_work+0x864/0x1570 [ 1007.161809] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1007.166502] worker_thread+0x64c/0x1130 [ 1007.171697] ? process_one_work+0x1570/0x1570 [ 1007.176264] kthread+0x33f/0x460 [ 1007.180703] ? kthread_park+0x180/0x180 [ 1007.184684] ret_from_fork+0x24/0x30 [ 1007.190173] INFO: task kworker/0:1:8121 blocked for more than 140 seconds. [ 1007.197187] Not tainted 4.19.155-syzkaller #0 [ 1007.203334] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1007.211964] kworker/0:1 D28640 8121 2 0x80000000 [ 1007.217702] Workqueue: events disconnect_work [ 1007.223592] Call Trace: [ 1007.226196] __schedule+0x887/0x2040 [ 1007.230939] ? io_schedule_timeout+0x140/0x140 [ 1007.235526] ? lock_downgrade+0x720/0x720 [ 1007.240732] ? __mutex_lock+0x458/0x1260 [ 1007.244806] schedule+0x8d/0x1b0 [ 1007.248174] schedule_preempt_disabled+0xf/0x20 [ 1007.254199] __mutex_lock+0x647/0x1260 [ 1007.258098] ? disconnect_work+0x18/0x200 [ 1007.263215] ? __mutex_add_waiter+0x160/0x160 [ 1007.267718] ? trace_hardirqs_off+0x64/0x200 [ 1007.273216] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1007.278394] ? check_preemption_disabled+0x41/0x280 [ 1007.284481] disconnect_work+0x18/0x200 [ 1007.289120] process_one_work+0x864/0x1570 [ 1007.293363] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1007.298038] worker_thread+0x64c/0x1130 [ 1007.303608] ? __kthread_parkme+0x133/0x1e0 [ 1007.307931] ? process_one_work+0x1570/0x1570 [ 1007.313467] kthread+0x33f/0x460 [ 1007.316869] ? kthread_park+0x180/0x180 [ 1007.322461] ret_from_fork+0x24/0x30 [ 1007.326244] INFO: task kworker/1:1:8173 blocked for more than 140 seconds. [ 1007.335243] Not tainted 4.19.155-syzkaller #0 [ 1007.340840] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1007.349674] kworker/1:1 D30040 8173 2 0x80000000 [ 1007.355374] Workqueue: events linkwatch_event [ 1007.360860] Call Trace: [ 1007.363459] __schedule+0x887/0x2040 [ 1007.367178] ? io_schedule_timeout+0x140/0x140 [ 1007.373138] ? lock_downgrade+0x720/0x720 [ 1007.377297] ? __mutex_lock+0x458/0x1260 [ 1007.382374] schedule+0x8d/0x1b0 [ 1007.385747] schedule_preempt_disabled+0xf/0x20 [ 1007.391426] __mutex_lock+0x647/0x1260 [ 1007.395357] ? linkwatch_event+0xb/0x60 [ 1007.400350] ? __mutex_add_waiter+0x160/0x160 [ 1007.404853] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1007.410918] ? process_one_work+0x77b/0x1570 [ 1007.415339] ? check_preemption_disabled+0x41/0x280 [ 1007.421418] linkwatch_event+0xb/0x60 [ 1007.425227] process_one_work+0x864/0x1570 [ 1007.430442] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1007.435123] worker_thread+0x64c/0x1130 [ 1007.440077] ? __kthread_parkme+0x133/0x1e0 [ 1007.444402] ? process_one_work+0x1570/0x1570 [ 1007.450579] kthread+0x33f/0x460 [ 1007.453948] ? kthread_park+0x180/0x180 [ 1007.457918] ret_from_fork+0x24/0x30 [ 1007.463022] [ 1007.463022] Showing all locks held in the system: [ 1007.470038] 3 locks held by kworker/1:0/19: [ 1007.474363] #0: 00000000b5355a37 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 [ 1007.485858] #1: 00000000f0c77af1 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 [ 1007.497874] #2: 0000000096ead8c6 (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 [ 1007.506755] 1 lock held by khungtaskd/1567: [ 1007.511817] #0: 00000000f71b6027 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 1007.521088] 1 lock held by in:imklog/7800: [ 1007.525324] #0: 0000000082af1e7e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 1007.534393] 3 locks held by kworker/0:1/8121: [ 1007.540627] #0: 000000005c661a01 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 [ 1007.550500] #1: 0000000074d598e9 (cfg80211_disconnect_work){+.+.}, at: process_one_work+0x79c/0x1570 [ 1007.560506] #2: 0000000096ead8c6 (rtnl_mutex){+.+.}, at: disconnect_work+0x18/0x200 [ 1007.569171] 4 locks held by syz-executor133/8172: [ 1007.574015] 3 locks held by kworker/1:1/8173: [ 1007.580212] #0: 000000005c661a01 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 [ 1007.590184] #1: 0000000090ae866b ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 [ 1007.599949] #2: 0000000096ead8c6 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 [ 1007.607680] 3 locks held by kworker/0:3/8176: [ 1007.613156] #0: 00000000b5355a37 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 [ 1007.624222] #1: 000000005e276d2f ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 [ 1007.633898] #2: 0000000096ead8c6 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 [ 1007.642718] [ 1007.644344] ============================================= [ 1007.644344] [ 1007.652333] NMI backtrace for cpu 0 [ 1007.655964] CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.155-syzkaller #0 [ 1007.663399] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1007.672740] Call Trace: [ 1007.675380] dump_stack+0x1fc/0x2fe [ 1007.679012] nmi_cpu_backtrace.cold+0x63/0xa2 [ 1007.683557] ? lapic_can_unplug_cpu.cold+0x39/0x39 [ 1007.688482] nmi_trigger_cpumask_backtrace+0x1a6/0x1eb [ 1007.693821] watchdog+0x991/0xe60 [ 1007.697276] ? reset_hung_task_detector+0x30/0x30 [ 1007.702113] kthread+0x33f/0x460 [ 1007.705471] ? kthread_park+0x180/0x180 [ 1007.709439] ret_from_fork+0x24/0x30 [ 1007.713270] Sending NMI from CPU 0 to CPUs 1: [ 1007.718712] NMI backtrace for cpu 1 [ 1007.718718] CPU: 1 PID: 8172 Comm: syz-executor133 Not tainted 4.19.155-syzkaller #0 [ 1007.718723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1007.718727] RIP: 0010:__sanitizer_cov_trace_pc+0x14/0x50 [ 1007.718737] Code: e8 f0 f9 ea ff 48 c7 05 36 4b bf 0b 00 00 00 00 e9 39 ec ff ff 90 48 8b 34 24 65 48 8b 04 25 80 df 01 00 65 8b 15 6c 10 9d 7e <81> e2 00 01 1f 00 75 2b 8b 90 d8 12 00 00 83 fa 02 75 20 48 8b 88 [ 1007.718740] RSP: 0018:ffff8880afec7398 EFLAGS: 00000216 [ 1007.718747] RAX: ffff8880afb082c0 RBX: ffff88809abd9940 RCX: ffffffff87c34d4e [ 1007.718751] RDX: 0000000080000000 RSI: ffffffff87c34d21 RDI: ffff88809abda138 [ 1007.718756] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1007.718760] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 1007.718764] R13: ffff8880a9d23220 R14: dffffc0000000000 R15: 0000000000000000 [ 1007.718768] FS: 0000000002334880(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 1007.718771] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1007.718774] CR2: 00007fffd5e1a910 CR3: 00000000a1891000 CR4: 00000000001406e0 [ 1007.718778] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1007.718783] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1007.718786] Call Trace: [ 1007.718788] ieee80211_chanctx_radar_detect+0x1f1/0x390 [ 1007.718791] ieee80211_check_combinations+0x3b8/0x810 [ 1007.718794] ? ieee80211_recalc_dtim+0x240/0x240 [ 1007.718797] ieee80211_check_concurrent_iface+0x46d/0x650 [ 1007.718800] ieee80211_if_change_type+0x27b/0x5f0 [ 1007.718802] ieee80211_change_iface+0x26/0x220 [ 1007.718805] cfg80211_change_iface+0x2e1/0x1530 [ 1007.718807] nl80211_set_interface+0x661/0x830 [ 1007.718810] ? nl80211_nan_del_func+0x8b0/0x8b0 [ 1007.718812] ? nl80211_dump_interface+0x6e0/0x6e0 [ 1007.718815] ? nl80211_pre_doit+0xa2/0x620 [ 1007.718818] ? __cfg80211_rdev_from_attrs+0x700/0x700 [ 1007.718820] genl_family_rcv_msg+0x642/0xc40 [ 1007.718822] ? genl_rcv+0x40/0x40 [ 1007.718825] ? genl_rcv_msg+0x12f/0x160 [ 1007.718827] ? __mutex_add_waiter+0x160/0x160 [ 1007.718830] ? __radix_tree_lookup+0x216/0x370 [ 1007.718832] genl_rcv_msg+0xbf/0x160 [ 1007.718834] netlink_rcv_skb+0x160/0x440 [ 1007.718837] ? genl_family_rcv_msg+0xc40/0xc40 [ 1007.718839] ? netlink_ack+0xae0/0xae0 [ 1007.718841] ? genl_rcv+0x15/0x40 [ 1007.718844] genl_rcv+0x24/0x40 [ 1007.718846] netlink_unicast+0x4d5/0x690 [ 1007.718848] ? netlink_sendskb+0x110/0x110 [ 1007.718851] ? _copy_from_iter_full+0x229/0x7c0 [ 1007.718853] ? __phys_addr_symbol+0x2c/0x70 [ 1007.718856] ? __check_object_size+0x17b/0x3d1 [ 1007.718858] netlink_sendmsg+0x6bb/0xc40 [ 1007.718861] ? aa_af_perm+0x230/0x230 [ 1007.718863] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.718865] ? kernel_recvmsg+0x220/0x220 [ 1007.718868] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.718870] sock_sendmsg+0xc3/0x120 [ 1007.718872] ___sys_sendmsg+0x7bb/0x8e0 [ 1007.718875] ? copy_msghdr_from_user+0x440/0x440 [ 1007.718877] ? sock_ioctl+0x30e/0x5d0 [ 1007.718879] ? dlci_ioctl_set+0x30/0x30 [ 1007.718882] ? lock_downgrade+0x720/0x720 [ 1007.718884] ? lock_acquire+0x170/0x3c0 [ 1007.718887] ? debug_object_active_state+0x104/0x330 [ 1007.718889] ? mark_held_locks+0xf0/0xf0 [ 1007.718892] ? dlci_ioctl_set+0x30/0x30 [ 1007.718894] ? do_vfs_ioctl+0x110/0x12e0 [ 1007.718897] ? ioctl_preallocate+0x200/0x200 [ 1007.718899] ? __fdget+0x1a0/0x230 [ 1007.718901] __x64_sys_sendmsg+0x132/0x220 [ 1007.718904] ? __sys_sendmsg+0x1b0/0x1b0 [ 1007.718906] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 1007.718909] ? trace_hardirqs_off_caller+0x6e/0x210 [ 1007.718911] ? do_syscall_64+0x21/0x620 [ 1007.718914] do_syscall_64+0xf9/0x620 [ 1007.718917] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1007.718919] RIP: 0033:0x4423f9 [ 1007.718926] Code: e8 ac 00 03 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 7b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1007.718929] RSP: 002b:00007fffd5e1a8e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1007.718935] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004423f9 [ 1007.718939] RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000004 [ 1007.718942] RBP: 000000306e616c77 R08: 0000001d00000000 R09: 0000001d00000000 [ 1007.718946] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000ceded [ 1007.718949] R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004 [ 1007.752710] Kernel panic - not syncing: hung_task: blocked tasks [ 1008.145440] CPU: 0 PID: 1567 Comm: khungtaskd Not tainted 4.19.155-syzkaller #0 [ 1008.152878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1008.162220] Call Trace: [ 1008.164809] dump_stack+0x1fc/0x2fe [ 1008.168525] panic+0x26a/0x50e [ 1008.171812] ? __warn_printk+0xf3/0xf3 [ 1008.175699] ? lapic_can_unplug_cpu.cold+0x39/0x39 [ 1008.180621] ? ___preempt_schedule+0x16/0x18 [ 1008.185027] ? watchdog+0x991/0xe60 [ 1008.188651] ? nmi_trigger_cpumask_backtrace+0x15e/0x1eb [ 1008.194099] watchdog+0x9a2/0xe60 [ 1008.197554] ? reset_hung_task_detector+0x30/0x30 [ 1008.202393] kthread+0x33f/0x460 [ 1008.205773] ? kthread_park+0x180/0x180 [ 1008.209743] ret_from_fork+0x24/0x30 [ 1008.214297] Kernel Offset: disabled [ 1008.217928] Rebooting in 86400 seconds..