Warning: Permanently added '10.128.0.202' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 484.113445][ T8429] netlink: 32 bytes leftover after parsing attributes in process `syz-executor848'. [ 721.667729][ T1647] INFO: task kworker/0:0:5 blocked for more than 143 seconds. [ 721.675368][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.684946][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.694634][ T1647] task:kworker/0:0 state:D stack:27832 pid: 5 ppid: 2 flags:0x00004000 [ 721.704970][ T1647] Workqueue: ipv6_addrconf addrconf_verify_work [ 721.712530][ T1647] Call Trace: [ 721.715855][ T1647] __schedule+0x999/0xe70 [ 721.721914][ T1647] schedule+0x14b/0x200 [ 721.726093][ T1647] schedule_preempt_disabled+0xf/0x20 [ 721.733095][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 721.739472][ T1647] ? addrconf_verify_work+0xa/0x20 [ 721.744619][ T1647] mutex_lock_nested+0x1a/0x20 [ 721.750971][ T1647] addrconf_verify_work+0xa/0x20 [ 721.755925][ T1647] process_one_work+0x789/0xfc0 [ 721.762440][ T1647] worker_thread+0xac1/0x1300 [ 721.767164][ T1647] ? rcu_lock_release+0x20/0x20 [ 721.774007][ T1647] kthread+0x39a/0x3c0 [ 721.779280][ T1647] ? rcu_lock_release+0x20/0x20 [ 721.784155][ T1647] ? kthread_blkcg+0xd0/0xd0 [ 721.791580][ T1647] ret_from_fork+0x1f/0x30 [ 721.796209][ T1647] INFO: task syz-executor848:8440 blocked for more than 143 seconds. [ 721.805945][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.813583][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.823242][ T1647] task:syz-executor848 state:D stack:28768 pid: 8440 ppid: 8420 flags:0x00004004 [ 721.833542][ T1647] Call Trace: [ 721.836842][ T1647] __schedule+0x999/0xe70 [ 721.842758][ T1647] schedule+0x14b/0x200 [ 721.846935][ T1647] schedule_preempt_disabled+0xf/0x20 [ 721.853971][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 721.860380][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 721.865605][ T1647] mutex_lock_nested+0x1a/0x20 [ 721.871938][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 721.876903][ T1647] ? _raw_spin_unlock_irq+0x2a/0x40 [ 721.883676][ T1647] ? finish_task_switch+0x140/0x5f0 [ 721.890333][ T1647] ? __schedule+0x9a1/0xe70 [ 721.894878][ T1647] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 721.902678][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 721.909059][ T1647] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 721.915250][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 721.922836][ T1647] ? rtnetlink_bind+0x80/0x80 [ 721.927558][ T1647] netlink_unicast+0x786/0x940 [ 721.934369][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 721.940253][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 721.945476][ T1647] ____sys_sendmsg+0x519/0x800 [ 721.951853][ T1647] ? import_iovec+0xe6/0x120 [ 721.956528][ T1647] __sys_sendmsg+0x2bf/0x370 [ 721.962988][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 721.970176][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 721.975395][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 721.982989][ T1647] do_syscall_64+0x2d/0x70 [ 721.988673][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 721.994587][ T1647] RIP: 0033:0x445b79 [ 722.000042][ T1647] RSP: 002b:00007fdfd26e7318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.009564][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca438 RCX: 0000000000445b79 [ 722.017554][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 722.027139][ T1647] RBP: 00000000004ca430 R08: 0000000000000050 R09: 0000000000000000 [ 722.036169][ T1647] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.045240][ T1647] R13: 00007ffe450575df R14: 00007fdfd26e7400 R15: 0000000000022000 [ 722.055664][ T1647] INFO: task syz-executor848:8429 blocked for more than 143 seconds. [ 722.064787][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.071628][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.081295][ T1647] task:syz-executor848 state:D stack:25728 pid: 8429 ppid: 8421 flags:0x00004004 [ 722.091596][ T1647] Call Trace: [ 722.094893][ T1647] __schedule+0x999/0xe70 [ 722.100875][ T1647] schedule+0x14b/0x200 [ 722.105051][ T1647] schedule_preempt_disabled+0xf/0x20 [ 722.112044][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 722.117366][ T1647] ? tcf_action_init_1+0x4c2/0xa80 [ 722.124192][ T1647] mutex_lock_nested+0x1a/0x20 [ 722.130023][ T1647] tcf_action_init_1+0x4c2/0xa80 [ 722.135009][ T1647] tcf_action_init+0x12f/0x4d0 [ 722.141745][ T1647] tc_ctl_action+0x2c7/0x7d0 [ 722.146407][ T1647] ? tcf_free_cookie_rcu+0x40/0x40 [ 722.153112][ T1647] rtnetlink_rcv_msg+0x887/0xd60 [ 722.159127][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.164772][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 722.171074][ T1647] ? rtnetlink_bind+0x80/0x80 [ 722.175782][ T1647] netlink_unicast+0x786/0x940 [ 722.183432][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 722.189251][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 722.194468][ T1647] ____sys_sendmsg+0x519/0x800 [ 722.200973][ T1647] ? import_iovec+0xe6/0x120 [ 722.205591][ T1647] __sys_sendmsg+0x2bf/0x370 [ 722.212152][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.219251][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.224473][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.231982][ T1647] do_syscall_64+0x2d/0x70 [ 722.236417][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.244112][ T1647] RIP: 0033:0x445b79 [ 722.249113][ T1647] RSP: 002b:00007fdfd2708318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.257549][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000445b79 [ 722.267262][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 722.276302][ T1647] RBP: 00000000004ca420 R08: 0000000000000009 R09: 0000000000000000 [ 722.285332][ T1647] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.294458][ T1647] R13: 00007ffe450575df R14: 00007fdfd2708400 R15: 0000000000022000 [ 722.303551][ T1647] INFO: task syz-executor848:8439 blocked for more than 143 seconds. [ 722.313964][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.320838][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.330483][ T1647] task:syz-executor848 state:D stack:28768 pid: 8439 ppid: 8421 flags:0x00004004 [ 722.340806][ T1647] Call Trace: [ 722.344111][ T1647] __schedule+0x999/0xe70 [ 722.350027][ T1647] schedule+0x14b/0x200 [ 722.354201][ T1647] schedule_preempt_disabled+0xf/0x20 [ 722.361167][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 722.366497][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 722.373357][ T1647] mutex_lock_nested+0x1a/0x20 [ 722.379718][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 722.384722][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.391925][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 722.396710][ T1647] ? rtnetlink_bind+0x80/0x80 [ 722.402955][ T1647] netlink_unicast+0x786/0x940 [ 722.408804][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 722.413624][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 722.420579][ T1647] ____sys_sendmsg+0x519/0x800 [ 722.425380][ T1647] ? import_iovec+0xe6/0x120 [ 722.431507][ T1647] __sys_sendmsg+0x2bf/0x370 [ 722.436187][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.444959][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.451219][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.457220][ T1647] do_syscall_64+0x2d/0x70 [ 722.463400][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.470392][ T1647] RIP: 0033:0x445b79 [ 722.474300][ T1647] RSP: 002b:00007fdfd26e7318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.484340][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca438 RCX: 0000000000445b79 [ 722.493754][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 722.502842][ T1647] RBP: 00000000004ca430 R08: 0000000000000050 R09: 0000000000000000 [ 722.511915][ T1647] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.521016][ T1647] R13: 00007ffe450575df R14: 00007fdfd26e7400 R15: 0000000000022000 [ 722.530198][ T1647] INFO: task syz-executor848:8437 blocked for more than 144 seconds. [ 722.539964][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.545868][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.555997][ T1647] task:syz-executor848 state:D stack:27344 pid: 8437 ppid: 8423 flags:0x00004004 [ 722.566279][ T1647] Call Trace: [ 722.571797][ T1647] __schedule+0x999/0xe70 [ 722.576171][ T1647] schedule+0x14b/0x200 [ 722.581909][ T1647] schedule_preempt_disabled+0xf/0x20 [ 722.587296][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 722.594203][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 722.600361][ T1647] mutex_lock_nested+0x1a/0x20 [ 722.605143][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 722.612372][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.619082][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 722.623885][ T1647] ? rtnetlink_bind+0x80/0x80 [ 722.630190][ T1647] netlink_unicast+0x786/0x940 [ 722.634993][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 722.641425][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 722.646650][ T1647] ____sys_sendmsg+0x519/0x800 [ 722.653570][ T1647] ? import_iovec+0xe6/0x120 [ 722.659503][ T1647] __sys_sendmsg+0x2bf/0x370 [ 722.664162][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.671809][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.677034][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.684588][ T1647] do_syscall_64+0x2d/0x70 [ 722.690066][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.695996][ T1647] RIP: 0033:0x445b79 [ 722.702641][ T1647] RSP: 002b:00007fdfd2708318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.712083][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000445b79 [ 722.721308][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 722.730346][ T1647] RBP: 00000000004ca420 R08: 0000000000000009 R09: 0000000000000000 [ 722.739366][ T1647] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.747352][ T1647] R13: 00007ffe450575df R14: 00007fdfd2708400 R15: 0000000000022000 [ 722.757011][ T1647] INFO: task syz-executor848:8444 blocked for more than 144 seconds. [ 722.766778][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.773630][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.783513][ T1647] task:syz-executor848 state:D stack:27552 pid: 8444 ppid: 8423 flags:0x00004004 [ 722.793918][ T1647] Call Trace: [ 722.797239][ T1647] __schedule+0x999/0xe70 [ 722.803237][ T1647] schedule+0x14b/0x200 [ 722.807415][ T1647] schedule_preempt_disabled+0xf/0x20 [ 722.814557][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 722.820983][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 722.826130][ T1647] mutex_lock_nested+0x1a/0x20 [ 722.833669][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 722.839706][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.845304][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 722.851991][ T1647] ? rtnetlink_bind+0x80/0x80 [ 722.856701][ T1647] netlink_unicast+0x786/0x940 [ 722.863022][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 722.869016][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 722.874235][ T1647] ____sys_sendmsg+0x519/0x800 [ 722.880549][ T1647] ? import_iovec+0xe6/0x120 [ 722.885180][ T1647] __sys_sendmsg+0x2bf/0x370 [ 722.891363][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.897362][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.904190][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.911365][ T1647] do_syscall_64+0x2d/0x70 [ 722.915802][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.923708][ T1647] RIP: 0033:0x445b79 [ 722.927622][ T1647] RSP: 002b:00007fdfd26e7318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.937090][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca438 RCX: 0000000000445b79 [ 722.946796][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 722.955813][ T1647] RBP: 00000000004ca430 R08: 0000000000000050 R09: 0000000000000000 [ 722.966083][ T1647] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.975114][ T1647] R13: 00007ffe450575df R14: 00007fdfd26e7400 R15: 0000000000022000 [ 722.984466][ T1647] INFO: task syz-executor848:8436 blocked for more than 144 seconds. [ 722.994468][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 723.001455][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.011191][ T1647] task:syz-executor848 state:D stack:28768 pid: 8436 ppid: 8427 flags:0x00004004 [ 723.021487][ T1647] Call Trace: [ 723.024785][ T1647] __schedule+0x999/0xe70 [ 723.030820][ T1647] schedule+0x14b/0x200 [ 723.035022][ T1647] schedule_preempt_disabled+0xf/0x20 [ 723.041969][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 723.047317][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.054008][ T1647] mutex_lock_nested+0x1a/0x20 [ 723.059806][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.064809][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.072094][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 723.076884][ T1647] ? rtnetlink_bind+0x80/0x80 [ 723.083716][ T1647] netlink_unicast+0x786/0x940 [ 723.090696][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 723.095494][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 723.102362][ T1647] ____sys_sendmsg+0x519/0x800 [ 723.107149][ T1647] ? import_iovec+0xe6/0x120 [ 723.113279][ T1647] __sys_sendmsg+0x2bf/0x370 [ 723.118961][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.124961][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.131698][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.138704][ T1647] do_syscall_64+0x2d/0x70 [ 723.143143][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.150597][ T1647] RIP: 0033:0x445b79 [ 723.154507][ T1647] RSP: 002b:00007fdfd2708318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.164482][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000445b79 [ 723.173508][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 723.182554][ T1647] RBP: 00000000004ca420 R08: 0000000000000009 R09: 0000000000000000 [ 723.191604][ T1647] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.200687][ T1647] R13: 00007ffe450575df R14: 00007fdfd2708400 R15: 0000000000022000 [ 723.209737][ T1647] INFO: task syz-executor848:8442 blocked for more than 144 seconds. [ 723.220616][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 723.226514][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.236663][ T1647] task:syz-executor848 state:D stack:28768 pid: 8442 ppid: 8427 flags:0x00004004 [ 723.247276][ T1647] Call Trace: [ 723.251641][ T1647] __schedule+0x999/0xe70 [ 723.256014][ T1647] schedule+0x14b/0x200 [ 723.261881][ T1647] schedule_preempt_disabled+0xf/0x20 [ 723.267270][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 723.274128][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.280317][ T1647] mutex_lock_nested+0x1a/0x20 [ 723.285098][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.291630][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.297224][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 723.303607][ T1647] ? rtnetlink_bind+0x80/0x80 [ 723.309327][ T1647] netlink_unicast+0x786/0x940 [ 723.314125][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 723.320865][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 723.326085][ T1647] ____sys_sendmsg+0x519/0x800 [ 723.332403][ T1647] ? import_iovec+0xe6/0x120 [ 723.337021][ T1647] __sys_sendmsg+0x2bf/0x370 [ 723.343400][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.352091][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.357318][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.365117][ T1647] do_syscall_64+0x2d/0x70 [ 723.370579][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.376500][ T1647] RIP: 0033:0x445b79 [ 723.382162][ T1647] RSP: 002b:00007fdfd26e7318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.391630][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca438 RCX: 0000000000445b79 [ 723.400665][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 723.409676][ T1647] RBP: 00000000004ca430 R08: 0000000000000050 R09: 0000000000000000 [ 723.422168][ T1647] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.431186][ T1647] R13: 00007ffe450575df R14: 00007fdfd26e7400 R15: 0000000000022000 [ 723.440255][ T1647] INFO: task syz-executor848:8434 blocked for more than 145 seconds. [ 723.449947][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 723.455876][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.466019][ T1647] task:syz-executor848 state:D stack:27344 pid: 8434 ppid: 8426 flags:0x00004004 [ 723.476335][ T1647] Call Trace: [ 723.481849][ T1647] __schedule+0x999/0xe70 [ 723.486243][ T1647] schedule+0x14b/0x200 [ 723.491996][ T1647] schedule_preempt_disabled+0xf/0x20 [ 723.497397][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 723.504471][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.510663][ T1647] mutex_lock_nested+0x1a/0x20 [ 723.515466][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.522020][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.527612][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 723.533947][ T1647] ? rtnetlink_bind+0x80/0x80 [ 723.540172][ T1647] netlink_unicast+0x786/0x940 [ 723.544982][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 723.551336][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 723.556556][ T1647] ____sys_sendmsg+0x519/0x800 [ 723.562930][ T1647] ? import_iovec+0xe6/0x120 [ 723.567555][ T1647] __sys_sendmsg+0x2bf/0x370 [ 723.573764][ T1647] ? _raw_spin_unlock_irq+0x1f/0x40 [ 723.580026][ T1647] ? finish_task_switch+0x141/0x5f0 [ 723.585274][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.592815][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.599083][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.605085][ T1647] do_syscall_64+0x2d/0x70 [ 723.612325][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.619279][ T1647] RIP: 0033:0x445b79 [ 723.623190][ T1647] RSP: 002b:00007fdfd2708318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.633199][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000445b79 [ 723.642358][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 723.651443][ T1647] RBP: 00000000004ca420 R08: 0000000000000009 R09: 0000000000000000 [ 723.660483][ T1647] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.669504][ T1647] R13: 00007ffe450575df R14: 00007fdfd2708400 R15: 0000000000022000 [ 723.677546][ T1647] INFO: task syz-executor848:8443 blocked for more than 145 seconds. [ 723.688097][ T1647] Not tainted 5.11.0-rc6-syzkaller #0 [ 723.694019][ T1647] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.704194][ T1647] task:syz-executor848 state:D stack:28768 pid: 8443 ppid: 8426 flags:0x00004004 [ 723.714527][ T1647] Call Trace: [ 723.718838][ T1647] __schedule+0x999/0xe70 [ 723.723205][ T1647] schedule+0x14b/0x200 [ 723.727367][ T1647] schedule_preempt_disabled+0xf/0x20 [ 723.734871][ T1647] __mutex_lock_common+0x124f/0x2f00 [ 723.742505][ T1647] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.748681][ T1647] mutex_lock_nested+0x1a/0x20 [ 723.753460][ T1647] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.760038][ T1647] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.765632][ T1647] netlink_rcv_skb+0x190/0x3a0 [ 723.772698][ T1647] ? rtnetlink_bind+0x80/0x80 [ 723.777410][ T1647] netlink_unicast+0x786/0x940 [ 723.783838][ T1647] netlink_sendmsg+0x9ae/0xd50 [ 723.789658][ T1647] ? netlink_getsockopt+0xa50/0xa50 [ 723.794879][ T1647] ____sys_sendmsg+0x519/0x800 [ 723.801221][ T1647] ? import_iovec+0xe6/0x120 [ 723.805837][ T1647] __sys_sendmsg+0x2bf/0x370 [ 723.812012][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.819134][ T1647] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.824356][ T1647] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.832030][ T1647] do_syscall_64+0x2d/0x70 [ 723.836474][ T1647] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.843952][ T1647] RIP: 0033:0x445b79 [ 723.848893][ T1647] RSP: 002b:00007fdfd26e7318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.857329][ T1647] RAX: ffffffffffffffda RBX: 00000000004ca438 RCX: 0000000000445b79 [ 723.866906][ T1647] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 723.877267][ T1647] RBP: 00000000004ca430 R08: 0000000000000050 R09: 0000000000000000 [ 723.886330][ T1647] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.895383][ T1647] R13: 00007ffe450575df R14: 00007fdfd26e7400 R15: 0000000000022000 [ 723.904521][ T1647] [ 723.904521][ T1647] Showing all locks held in the system: [ 723.914740][ T1647] 3 locks held by kworker/0:0/5: [ 723.921510][ T1647] #0: ffff888146e59538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 723.933592][ T1647] #1: ffffc90000ca7d78 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 723.944871][ T1647] #2: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 723.955386][ T1647] 1 lock held by khungtaskd/1647: [ 723.961483][ T1647] #0: ffffffff8c711740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 723.972146][ T1647] 1 lock held by in:imklog/8119: [ 723.977094][ T1647] #0: ffff888012938870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 [ 723.988314][ T1647] 1 lock held by syz-executor848/8428: [ 723.993777][ T1647] 1 lock held by syz-executor848/8440: [ 724.001960][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.012510][ T1647] 1 lock held by syz-executor848/8429: [ 724.019518][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: tcf_action_init_1+0x4c2/0xa80 [ 724.029957][ T1647] 1 lock held by syz-executor848/8439: [ 724.035433][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.046564][ T1647] 1 lock held by syz-executor848/8437: [ 724.053216][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.063696][ T1647] 1 lock held by syz-executor848/8444: [ 724.070252][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.080779][ T1647] 1 lock held by syz-executor848/8436: [ 724.086267][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.097253][ T1647] 1 lock held by syz-executor848/8442: [ 724.103814][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.114325][ T1647] 1 lock held by syz-executor848/8434: [ 724.120841][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.132465][ T1647] 1 lock held by syz-executor848/8443: [ 724.138966][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.149418][ T1647] 1 lock held by syz-executor848/8435: [ 724.154884][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.165899][ T1647] 1 lock held by syz-executor848/8441: [ 724.172406][ T1647] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.183068][ T1647] [ 724.185404][ T1647] ============================================= [ 724.185404][ T1647] [ 724.195415][ T1647] NMI backtrace for cpu 1 [ 724.199838][ T1647] CPU: 1 PID: 1647 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 724.208167][ T1647] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 724.218227][ T1647] Call Trace: [ 724.221517][ T1647] dump_stack+0x137/0x1be [ 724.225948][ T1647] ? nmi_cpu_backtrace+0x94/0x190 [ 724.230982][ T1647] ? asan.module_dtor+0x20/0x20 [ 724.235893][ T1647] nmi_cpu_backtrace+0x16c/0x190 [ 724.240836][ T1647] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 724.246923][ T1647] nmi_trigger_cpumask_backtrace+0x191/0x2f0 [ 724.252920][ T1647] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 724.259030][ T1647] watchdog+0xce9/0xd30 [ 724.263276][ T1647] ? hungtask_pm_notify+0x50/0x50 [ 724.268304][ T1647] kthread+0x39a/0x3c0 [ 724.272396][ T1647] ? hungtask_pm_notify+0x50/0x50 [ 724.277464][ T1647] ? kthread_blkcg+0xd0/0xd0 [ 724.282058][ T1647] ret_from_fork+0x1f/0x30 [ 724.286637][ T1647] Sending NMI from CPU 1 to CPUs 0: [ 724.292581][ C0] NMI backtrace for cpu 0 [ 724.292589][ C0] CPU: 0 PID: 8428 Comm: syz-executor848 Not tainted 5.11.0-rc6-syzkaller #0 [ 724.292594][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 724.292600][ C0] RIP: 0010:__lock_acquire+0x872/0x5e90 [ 724.292606][ C0] Code: b6 04 10 84 c0 0f 85 c8 00 00 00 8b 03 66 41 39 c4 89 c3 41 0f 4e dc 66 85 c0 41 0f 44 dc 49 ff c6 48 8b 44 24 48 0f b6 04 10 <84> c0 0f 85 c7 00 00 00 48 8b 44 24 20 48 63 00 49 83 c7 28 41 ff [ 724.292614][ C0] RSP: 0018:ffffc9000101eef0 EFLAGS: 00000002 [ 724.292624][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff815b7bef [ 724.292629][ C0] RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff8f90c498 [ 724.292634][ C0] RBP: ffffc9000101f0a0 R08: dffffc0000000000 R09: fffffbfff1f21894 [ 724.292639][ C0] R10: fffffbfff1f21894 R11: 0000000000000000 R12: 0000000000000004 [ 724.292644][ C0] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888021fa4128 [ 724.292649][ C0] FS: 00007fdfd2708700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 724.292654][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 724.292659][ C0] CR2: 00007fbe95025000 CR3: 0000000019645000 CR4: 00000000001506f0 [ 724.292664][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 724.292669][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 724.292673][ C0] Call Trace: [ 724.292676][ C0] ? finish_task_switch+0x140/0x5f0 [ 724.292680][ C0] ? rcu_read_lock_sched_held+0x41/0xb0 [ 724.292684][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 724.292688][ C0] lock_acquire+0x114/0x5e0 [ 724.292691][ C0] ? tcf_idr_check_alloc+0xa4/0x380 [ 724.292695][ C0] __mutex_lock_common+0x173/0x2f00 [ 724.292699][ C0] ? tcf_idr_check_alloc+0xa4/0x380 [ 724.292703][ C0] ? tcf_idr_check_alloc+0x9a/0x380 [ 724.292706][ C0] ? tcf_idr_check_alloc+0xa4/0x380 [ 724.292710][ C0] ? __mutex_unlock_slowpath+0x12d/0x520 [ 724.292714][ C0] mutex_lock_nested+0x1a/0x20 [ 724.292718][ C0] tcf_idr_check_alloc+0xa4/0x380 [ 724.292721][ C0] tcf_connmark_init+0x165/0x7b0 [ 724.292725][ C0] ? tcf_connmark_search+0x40/0x40 [ 724.292729][ C0] tcf_action_init_1+0x7e8/0xa80 [ 724.292732][ C0] ? __nla_parse+0x3c/0x50 [ 724.292736][ C0] tcf_action_init+0x12f/0x4d0 [ 724.292739][ C0] tc_ctl_action+0x2c7/0x7d0 [ 724.292743][ C0] ? tcf_free_cookie_rcu+0x40/0x40 [ 724.292747][ C0] rtnetlink_rcv_msg+0x887/0xd60 [ 724.292750][ C0] ? rcu_read_lock_sched_held+0x41/0xb0 [ 724.292754][ C0] netlink_rcv_skb+0x190/0x3a0 [ 724.292758][ C0] ? rtnetlink_bind+0x80/0x80 [ 724.292761][ C0] netlink_unicast+0x786/0x940 [ 724.292765][ C0] netlink_sendmsg+0x9ae/0xd50 [ 724.292769][ C0] ? netlink_getsockopt+0xa50/0xa50 [ 724.292772][ C0] ____sys_sendmsg+0x519/0x800 [ 724.292776][ C0] ? import_iovec+0xe6/0x120 [ 724.292779][ C0] __sys_sendmsg+0x2bf/0x370 [ 724.292783][ C0] ? syscall_enter_from_user_mode+0x24/0x190 [ 724.292787][ C0] ? lockdep_hardirqs_on+0x8d/0x130 [ 724.292791][ C0] ? syscall_enter_from_user_mode+0x24/0x190 [ 724.292795][ C0] do_syscall_64+0x2d/0x70 [ 724.292799][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 724.292802][ C0] RIP: 0033:0x445b79 [ 724.292808][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 [ 724.292816][ C0] RSP: 002b:00007fdfd2708318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 724.292825][ C0] RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000445b79 [ 724.292829][ C0] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 724.292834][ C0] RBP: 00000000004ca420 R08: 0000000000000009 R09: 0000000000000000 [ 724.292839][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 724.292845][ C0] R13: 00007ffe450575df R14: 00007fdfd2708400 R15: 0000000000022000 [ 724.294595][ T1647] Kernel panic - not syncing: hung_task: blocked tasks [ 724.679204][ T1647] CPU: 1 PID: 1647 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 724.687531][ T1647] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 724.697599][ T1647] Call Trace: [ 724.700887][ T1647] dump_stack+0x137/0x1be [ 724.705226][ T1647] ? panic+0x1f3/0x800 [ 724.709399][ T1647] panic+0x291/0x800 [ 724.713312][ T1647] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 724.719465][ T1647] ? nmi_trigger_cpumask_backtrace+0x29b/0x2f0 [ 724.725635][ T1647] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 724.731836][ T1647] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2f0 [ 724.738000][ T1647] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 724.744082][ T1647] watchdog+0xd29/0xd30 [ 724.748254][ T1647] ? hungtask_pm_notify+0x50/0x50 [ 724.753305][ T1647] kthread+0x39a/0x3c0 [ 724.757379][ T1647] ? hungtask_pm_notify+0x50/0x50 [ 724.762402][ T1647] ? kthread_blkcg+0xd0/0xd0 [ 724.766998][ T1647] ret_from_fork+0x1f/0x30 [ 724.772071][ T1647] Kernel Offset: disabled [ 724.776414][ T1647] Rebooting in 86400 seconds..