Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. syzkaller login: [ 492.544550][ T8477] IPVS: ftp: loaded support on port[0] = 21 [ 492.624725][ T8477] chnl_net:caif_netlink_parms(): no params data found [ 492.671863][ T8477] bridge0: port 1(bridge_slave_0) entered blocking state [ 492.679477][ T8477] bridge0: port 1(bridge_slave_0) entered disabled state [ 492.687542][ T8477] device bridge_slave_0 entered promiscuous mode [ 492.695777][ T8477] bridge0: port 2(bridge_slave_1) entered blocking state [ 492.704154][ T8477] bridge0: port 2(bridge_slave_1) entered disabled state [ 492.712162][ T8477] device bridge_slave_1 entered promiscuous mode [ 492.729732][ T8477] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 492.740237][ T8477] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 492.760678][ T8477] team0: Port device team_slave_0 added [ 492.767781][ T8477] team0: Port device team_slave_1 added [ 492.783158][ T8477] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 492.790113][ T8477] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 492.816021][ T8477] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 492.828477][ T8477] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 492.835445][ T8477] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 492.862541][ T8477] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 492.887098][ T8477] device hsr_slave_0 entered promiscuous mode [ 492.893634][ T8477] device hsr_slave_1 entered promiscuous mode [ 492.981876][ T8477] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 492.992597][ T8477] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 493.002121][ T8477] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 493.011785][ T8477] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 493.035533][ T8477] bridge0: port 2(bridge_slave_1) entered blocking state [ 493.042849][ T8477] bridge0: port 2(bridge_slave_1) entered forwarding state [ 493.050771][ T8477] bridge0: port 1(bridge_slave_0) entered blocking state [ 493.057926][ T8477] bridge0: port 1(bridge_slave_0) entered forwarding state [ 493.099230][ T8477] 8021q: adding VLAN 0 to HW filter on device bond0 [ 493.112839][ T8537] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 493.124367][ T8537] bridge0: port 1(bridge_slave_0) entered disabled state [ 493.132953][ T8537] bridge0: port 2(bridge_slave_1) entered disabled state [ 493.141975][ T8537] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 493.154149][ T8477] 8021q: adding VLAN 0 to HW filter on device team0 [ 493.165402][ T8469] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 493.174033][ T8469] bridge0: port 1(bridge_slave_0) entered blocking state [ 493.181146][ T8469] bridge0: port 1(bridge_slave_0) entered forwarding state [ 493.192769][ T8537] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 493.201873][ T8537] bridge0: port 2(bridge_slave_1) entered blocking state [ 493.208985][ T8537] bridge0: port 2(bridge_slave_1) entered forwarding state [ 493.227227][ T8537] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 493.235809][ T8537] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 493.252629][ T8477] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 493.263272][ T8477] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 493.277506][ T8685] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 493.285702][ T8685] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 493.294584][ T8685] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 493.314496][ T8477] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 493.323455][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 493.330901][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 493.338400][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 493.358383][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 493.375800][ T8469] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 493.385537][ T8469] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 493.393616][ T8469] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 493.404046][ T8477] device veth0_vlan entered promiscuous mode [ 493.415199][ T8477] device veth1_vlan entered promiscuous mode [ 493.435537][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 493.443744][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 493.452247][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 493.463343][ T8477] device veth0_macvtap entered promiscuous mode [ 493.473171][ T8477] device veth1_macvtap entered promiscuous mode [ 493.491032][ T8477] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 493.499036][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 493.509048][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 493.520617][ T8477] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 493.528591][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 493.539074][ T8477] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 493.549371][ T8477] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 executing program executing program [ 493.558405][ T8477] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 493.569289][ T8477] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 716.188683][ T1652] INFO: task kworker/1:2:3080 blocked for more than 143 seconds. [ 716.196551][ T1652] Not tainted 5.10.0-rc7-syzkaller #0 [ 716.207118][ T1652] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.217106][ T1652] task:kworker/1:2 state:D stack:27120 pid: 3080 ppid: 2 flags:0x00004000 [ 716.228834][ T1652] Workqueue: ipv6_addrconf addrconf_dad_work [ 716.234825][ T1652] Call Trace: [ 716.238119][ T1652] __schedule+0x893/0x2130 [ 716.243696][ T1652] ? io_schedule_timeout+0x140/0x140 [ 716.251107][ T1652] ? _raw_spin_unlock_irq+0x1f/0x40 [ 716.256302][ T1652] ? lockdep_hardirqs_on+0x79/0x100 [ 716.261826][ T1652] schedule+0xcf/0x270 [ 716.265910][ T1652] schedule_preempt_disabled+0xf/0x20 [ 716.281292][ T1652] __mutex_lock+0x3e2/0x10e0 [ 716.285997][ T1652] ? addrconf_dad_work+0xa3/0x1280 [ 716.292802][ T1652] ? mutex_lock_io_nested+0xf60/0xf60 [ 716.298177][ T1652] ? debug_object_deactivate+0x264/0x300 [ 716.304144][ T1652] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 716.311956][ T1652] addrconf_dad_work+0xa3/0x1280 [ 716.316900][ T1652] ? addrconf_dad_completed+0xc60/0xc60 [ 716.322742][ T1652] process_one_work+0x933/0x15a0 [ 716.327684][ T1652] ? lock_release+0x710/0x710 [ 716.333876][ T1652] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.339577][ T1652] ? rwlock_bug.part.0+0x90/0x90 [ 716.344510][ T1652] ? _raw_spin_lock_irq+0x41/0x50 [ 716.351164][ T1652] worker_thread+0x64c/0x1120 [ 716.355960][ T1652] ? __kthread_parkme+0x13f/0x1e0 [ 716.361300][ T1652] ? process_one_work+0x15a0/0x15a0 [ 716.366503][ T1652] kthread+0x3b1/0x4a0 [ 716.372176][ T1652] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 716.378076][ T1652] ret_from_fork+0x1f/0x30 [ 716.383300][ T1652] INFO: task kworker/0:2:8469 blocked for more than 143 seconds. [ 716.392422][ T1652] Not tainted 5.10.0-rc7-syzkaller #0 [ 716.398304][ T1652] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.407406][ T1652] task:kworker/0:2 state:D stack:27200 pid: 8469 ppid: 2 flags:0x00004000 [ 716.418189][ T1652] Workqueue: ipv6_addrconf addrconf_dad_work [ 716.424567][ T1652] Call Trace: [ 716.427862][ T1652] __schedule+0x893/0x2130 [ 716.435898][ T1652] ? io_schedule_timeout+0x140/0x140 [ 716.441445][ T1652] ? _raw_spin_unlock_irq+0x1f/0x40 [ 716.446642][ T1652] ? lockdep_hardirqs_on+0x79/0x100 [ 716.453382][ T1652] schedule+0xcf/0x270 [ 716.457581][ T1652] schedule_preempt_disabled+0xf/0x20 [ 716.463257][ T1652] __mutex_lock+0x3e2/0x10e0 [ 716.467853][ T1652] ? addrconf_dad_work+0xa3/0x1280 [ 716.474424][ T1652] ? mutex_lock_io_nested+0xf60/0xf60 [ 716.480094][ T1652] ? debug_object_deactivate+0x264/0x300 [ 716.485729][ T1652] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 716.493189][ T1652] addrconf_dad_work+0xa3/0x1280 [ 716.498138][ T1652] ? addrconf_dad_completed+0xc60/0xc60 [ 716.504103][ T1652] process_one_work+0x933/0x15a0 [ 716.510687][ T1652] ? lock_release+0x710/0x710 [ 716.515362][ T1652] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.521077][ T1652] ? rwlock_bug.part.0+0x90/0x90 [ 716.526014][ T1652] ? _raw_spin_lock_irq+0x41/0x50 [ 716.532738][ T1652] worker_thread+0x64c/0x1120 [ 716.537427][ T1652] ? __kthread_parkme+0x13f/0x1e0 [ 716.542715][ T1652] ? process_one_work+0x15a0/0x15a0 [ 716.547910][ T1652] kthread+0x3b1/0x4a0 [ 716.553510][ T1652] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 716.559720][ T1652] ret_from_fork+0x1f/0x30 [ 716.564170][ T1652] INFO: task kworker/1:0:8537 blocked for more than 143 seconds. [ 716.573470][ T1652] Not tainted 5.10.0-rc7-syzkaller #0 [ 716.579647][ T1652] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 716.588315][ T1652] task:kworker/1:0 state:D stack:27608 pid: 8537 ppid: 2 flags:0x00004000 [ 716.599182][ T1652] Workqueue: events linkwatch_event [ 716.604396][ T1652] Call Trace: [ 716.607681][ T1652] __schedule+0x893/0x2130 [ 716.612274][ T1652] ? io_schedule_timeout+0x140/0x140 [ 716.617564][ T1652] ? _raw_spin_unlock_irq+0x1f/0x40 [ 716.624084][ T1652] ? lockdep_hardirqs_on+0x79/0x100 [ 716.629437][ T1652] schedule+0xcf/0x270 [ 716.633509][ T1652] schedule_preempt_disabled+0xf/0x20 [ 716.640406][ T1652] __mutex_lock+0x3e2/0x10e0 [ 716.645005][ T1652] ? linkwatch_event+0xb/0x60 [ 716.649887][ T1652] ? mutex_lock_io_nested+0xf60/0xf60 [ 716.655295][ T1652] ? lock_release+0x710/0x710 [ 716.661524][ T1652] linkwatch_event+0xb/0x60 [ 716.666033][ T1652] process_one_work+0x933/0x15a0 [ 716.671199][ T1652] ? lock_release+0x710/0x710 [ 716.675893][ T1652] ? pwq_dec_nr_in_flight+0x320/0x320 [ 716.682726][ T1652] ? rwlock_bug.part.0+0x90/0x90 [ 716.687662][ T1652] ? _raw_spin_lock_irq+0x41/0x50 [ 716.692886][ T1652] worker_thread+0x64c/0x1120 [ 716.697569][ T1652] ? __kthread_parkme+0x13f/0x1e0 [ 716.704045][ T1652] ? process_one_work+0x15a0/0x15a0 [ 716.709558][ T1652] kthread+0x3b1/0x4a0 [ 716.713635][ T1652] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 716.721172][ T1652] ret_from_fork+0x1f/0x30 [ 716.725656][ T1652] [ 716.725656][ T1652] Showing all locks held in the system: [ 716.733531][ T1652] 1 lock held by khungtaskd/1652: [ 716.740189][ T1652] #0: ffffffff8b337a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 716.750230][ T1652] 3 locks held by kworker/1:2/3080: [ 716.755417][ T1652] #0: ffff88814758bd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 716.767951][ T1652] #1: ffffc9000201fda8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 716.781752][ T1652] #2: ffffffff8c92dc88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa3/0x1280 [ 716.791363][ T1652] 1 lock held by in:imklog/8173: [ 716.796292][ T1652] #0: ffff88801b13f4f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 716.806967][ T1652] 3 locks held by kworker/0:2/8469: [ 716.812323][ T1652] #0: ffff88814758bd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 716.824816][ T1652] #1: ffffc900014afda8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 716.837245][ T1652] #2: ffffffff8c92dc88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa3/0x1280 [ 716.848172][ T1652] 3 locks held by kworker/1:0/8537: [ 716.853504][ T1652] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 716.865346][ T1652] #1: ffffc900018afda8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 716.875862][ T1652] #2: ffffffff8c92dc88 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 [ 716.886424][ T1652] 1 lock held by syz-executor200/8689: [ 716.892047][ T1652] [ 716.894386][ T1652] ============================================= [ 716.894386][ T1652] [ 716.904116][ T1652] NMI backtrace for cpu 1 [ 716.908446][ T1652] CPU: 1 PID: 1652 Comm: khungtaskd Not tainted 5.10.0-rc7-syzkaller #0 [ 716.916841][ T1652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.926879][ T1652] Call Trace: [ 716.930157][ T1652] dump_stack+0x107/0x163 [ 716.934479][ T1652] nmi_cpu_backtrace.cold+0x44/0xd7 [ 716.939669][ T1652] ? lapic_can_unplug_cpu+0x80/0x80 [ 716.944855][ T1652] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 716.950826][ T1652] watchdog+0xd43/0xfa0 [ 716.954992][ T1652] ? reset_hung_task_detector+0x30/0x30 [ 716.960528][ T1652] kthread+0x3b1/0x4a0 [ 716.964589][ T1652] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 716.970470][ T1652] ret_from_fork+0x1f/0x30 [ 716.975059][ T1652] Sending NMI from CPU 1 to CPUs 0: [ 716.981078][ C0] NMI backtrace for cpu 0 [ 716.981083][ C0] CPU: 0 PID: 8689 Comm: syz-executor200 Not tainted 5.10.0-rc7-syzkaller #0 [ 716.981088][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 716.981099][ C0] RIP: 0010:lock_is_held_type+0xc2/0x100 [ 716.981108][ C0] Code: 03 44 39 f0 41 0f 94 c4 48 c7 c7 c0 60 4b 89 e8 d4 0b 00 00 b8 ff ff ff ff 65 0f c1 05 67 2f 18 77 83 f8 01 75 23 ff 34 24 9d <48> 83 c4 08 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 e4 eb [ 716.981112][ C0] RSP: 0018:ffffc90001b9eb68 EFLAGS: 00000202 [ 716.981120][ C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff19da93b [ 716.981124][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 716.981129][ C0] RBP: ffffffff8b337960 R08: ffffffff8713aa78 R09: ffff8881474d3007 [ 716.981133][ C0] R10: ffffed1028e9a600 R11: 0000000000000000 R12: 0000000000000000 [ 716.981138][ C0] R13: ffff88801a4da358 R14: 00000000ffffffff R15: ffff88801a4da358 [ 716.981142][ C0] FS: 0000000000aa7880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 716.981146][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 716.981151][ C0] CR2: 00007f811ee03000 CR3: 0000000013e95000 CR4: 00000000001506f0 [ 716.981155][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 716.981159][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 716.981162][ C0] Call Trace: [ 716.981165][ C0] ___might_sleep+0x236/0x2b0 [ 716.981168][ C0] __mutex_lock+0xa9/0x10e0 [ 716.981171][ C0] ? tcf_idr_check_alloc+0x78/0x3b0 [ 716.981175][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 716.981178][ C0] ? mutex_lock_io_nested+0xf60/0xf60 [ 716.981181][ C0] ? __mutex_unlock_slowpath+0xe2/0x610 [ 716.981185][ C0] ? __sanitizer_cov_trace_pc+0x9/0x60 [ 716.981188][ C0] ? wait_for_completion+0x260/0x260 [ 716.981192][ C0] tcf_idr_check_alloc+0x78/0x3b0 [ 716.981195][ C0] tcf_police_init+0x347/0x13a0 [ 716.981198][ C0] ? tcf_police_cleanup+0x60/0x60 [ 716.981201][ C0] ? find_held_lock+0x2d/0x110 [ 716.981204][ C0] ? tc_lookup_action_n+0xcd/0xf0 [ 716.981207][ C0] ? __kernel_text_address+0x9/0x30 [ 716.981217][ C0] tcf_action_init_1+0x1a3/0x990 [ 716.981220][ C0] ? tcf_action_dump_old+0x80/0x80 [ 716.981224][ C0] ? stack_trace_consume_entry+0x160/0x160 [ 716.981227][ C0] ? kasan_save_stack+0x32/0x40 [ 716.981230][ C0] ? kasan_save_stack+0x32/0x40 [ 716.981233][ C0] ? kasan_save_stack+0x1b/0x40 [ 716.981237][ C0] ? __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 716.981240][ C0] ? fw_change+0x91b/0x13e0 [ 716.981243][ C0] ? tc_new_tfilter+0x1394/0x2120 [ 716.981246][ C0] ? netlink_rcv_skb+0x153/0x420 [ 716.981249][ C0] ? netlink_unicast+0x533/0x7d0 [ 716.981252][ C0] ? netlink_sendmsg+0x856/0xd90 [ 716.981255][ C0] ? sock_sendmsg+0xcf/0x120 [ 716.981258][ C0] ? ____sys_sendmsg+0x331/0x810 [ 716.981261][ C0] ? ___sys_sendmsg+0xf3/0x170 [ 716.981264][ C0] tcf_exts_validate+0x138/0x420 [ 716.981267][ C0] ? tcf_exts_destroy+0xc0/0xc0 [ 716.981270][ C0] fw_set_parms+0x13d/0xaa0 [ 716.981273][ C0] ? fw_delete+0x8c0/0x8c0 [ 716.981277][ C0] ? kasan_unpoison_shadow+0x33/0x40 [ 716.981279][ C0] fw_change+0xa30/0x13e0 [ 716.981282][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 716.981284][ C0] ? fw_set_parms+0xaa0/0xaa0 [ 716.981287][ C0] tc_new_tfilter+0x1394/0x2120 [ 716.981289][ C0] ? fw_set_parms+0xaa0/0xaa0 [ 716.981292][ C0] ? tc_del_tfilter+0x15b0/0x15b0 [ 716.981295][ C0] ? tc_del_tfilter+0x15b0/0x15b0 [ 716.981297][ C0] rtnetlink_rcv_msg+0x80e/0xad0 [ 716.981300][ C0] ? rtnetlink_put_metrics+0x510/0x510 [ 716.981303][ C0] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 716.981305][ C0] netlink_rcv_skb+0x153/0x420 [ 716.981308][ C0] ? rtnetlink_put_metrics+0x510/0x510 [ 716.981311][ C0] ? netlink_ack+0xaa0/0xaa0 [ 716.981314][ C0] ? netlink_deliver_tap+0x227/0xb70 [ 716.981316][ C0] netlink_unicast+0x533/0x7d0 [ 716.981319][ C0] ? netlink_attachskb+0x810/0x810 [ 716.981321][ C0] ? __phys_addr_symbol+0x2c/0x70 [ 716.981324][ C0] ? __check_object_size+0x171/0x3f0 [ 716.981327][ C0] netlink_sendmsg+0x856/0xd90 [ 716.981329][ C0] ? netlink_unicast+0x7d0/0x7d0 [ 716.981332][ C0] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 716.981335][ C0] ? netlink_unicast+0x7d0/0x7d0 [ 716.981337][ C0] sock_sendmsg+0xcf/0x120 [ 716.981340][ C0] ____sys_sendmsg+0x331/0x810 [ 716.981343][ C0] ? kernel_sendmsg+0x50/0x50 [ 716.981345][ C0] ? do_recvmmsg+0x6c0/0x6c0 [ 716.981348][ C0] ? __lock_acquire+0x16b7/0x5500 [ 716.981350][ C0] ___sys_sendmsg+0xf3/0x170 [ 716.981353][ C0] ? sendmsg_copy_msghdr+0x160/0x160 [ 716.981355][ C0] ? find_held_lock+0x2d/0x110 [ 716.981358][ C0] ? __might_fault+0xd3/0x180 [ 716.981361][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 716.981363][ C0] __sys_sendmmsg+0x195/0x470 [ 716.981366][ C0] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 716.981369][ C0] ? sockfd_lookup_light+0xc5/0x180 [ 716.981371][ C0] ? __sys_sendmsg+0x10c/0x1b0 [ 716.981374][ C0] ? __sys_sendmsg_sock+0xb0/0xb0 [ 716.981376][ C0] __x64_sys_sendmmsg+0x99/0x100 [ 716.981379][ C0] ? syscall_enter_from_user_mode+0x1d/0x50 [ 716.981382][ C0] do_syscall_64+0x2d/0x70 [ 716.981385][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 716.981387][ C0] RIP: 0033:0x4458a9 [ 716.981395][ C0] Code: e8 6c 05 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 9b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 716.981398][ C0] RSP: 002b:00007ffd5bd433b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 716.981405][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004458a9 [ 716.981409][ C0] RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003 [ 716.981413][ C0] RBP: 00007ffd5bd433c0 R08: 0000000000000000 R09: 0000000000000000 [ 716.981416][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000078844 [ 716.981420][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 716.983827][ T1652] Kernel panic - not syncing: hung_task: blocked tasks [ 717.568907][ T1652] CPU: 1 PID: 1652 Comm: khungtaskd Not tainted 5.10.0-rc7-syzkaller #0 [ 717.577220][ T1652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 717.587265][ T1652] Call Trace: [ 717.590548][ T1652] dump_stack+0x107/0x163 [ 717.594868][ T1652] panic+0x306/0x73d [ 717.598756][ T1652] ? __warn_printk+0xf3/0xf3 [ 717.603349][ T1652] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.608544][ T1652] ? preempt_schedule_thunk+0x16/0x18 [ 717.613922][ T1652] ? watchdog.cold+0x5/0x158 [ 717.618502][ T1652] ? watchdog+0xa80/0xfa0 [ 717.622824][ T1652] watchdog.cold+0x16/0x158 [ 717.627316][ T1652] ? reset_hung_task_detector+0x30/0x30 [ 717.632860][ T1652] kthread+0x3b1/0x4a0 [ 717.637011][ T1652] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 717.642907][ T1652] ret_from_fork+0x1f/0x30 [ 717.648136][ T1652] Kernel Offset: disabled [ 717.652462][ T1652] Rebooting in 86400 seconds..