[ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.187' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 484.027905][ T8454] netlink: 32 bytes leftover after parsing attributes in process `syz-executor224'. [ 721.612842][ T1644] INFO: task kworker/1:0:19 blocked for more than 143 seconds. [ 721.620588][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.630186][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.640473][ T1644] task:kworker/1:0 state:D stack:28960 pid: 19 ppid: 2 flags:0x00004000 [ 721.652423][ T1644] Workqueue: ipv6_addrconf addrconf_verify_work [ 721.659121][ T1644] Call Trace: [ 721.662446][ T1644] __schedule+0x999/0xe70 [ 721.669382][ T1644] schedule+0x14b/0x200 [ 721.674949][ T1644] schedule_preempt_disabled+0xf/0x20 [ 721.680357][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 721.688052][ T1644] ? addrconf_verify_work+0xa/0x20 [ 721.694671][ T1644] mutex_lock_nested+0x1a/0x20 [ 721.699478][ T1644] addrconf_verify_work+0xa/0x20 [ 721.706290][ T1644] process_one_work+0x789/0xfc0 [ 721.711338][ T1644] worker_thread+0xac1/0x1300 [ 721.718047][ T1644] ? rcu_lock_release+0x20/0x20 [ 721.724291][ T1644] kthread+0x39a/0x3c0 [ 721.728481][ T1644] ? rcu_lock_release+0x20/0x20 [ 721.735310][ T1644] ? kthread_blkcg+0xd0/0xd0 [ 721.740316][ T1644] ret_from_fork+0x1f/0x30 [ 721.746873][ T1644] INFO: task syz-executor224:8454 blocked for more than 143 seconds. [ 721.756381][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 721.762329][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 721.774583][ T1644] task:syz-executor224 state:D stack:26104 pid: 8454 ppid: 8448 flags:0x00004004 [ 721.785643][ T1644] Call Trace: [ 721.788969][ T1644] __schedule+0x999/0xe70 [ 721.795352][ T1644] schedule+0x14b/0x200 [ 721.799575][ T1644] schedule_preempt_disabled+0xf/0x20 [ 721.806897][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 721.812437][ T1644] ? tcf_action_init_1+0x4c2/0xa80 [ 721.819769][ T1644] mutex_lock_nested+0x1a/0x20 [ 721.825979][ T1644] tcf_action_init_1+0x4c2/0xa80 [ 721.830997][ T1644] tcf_action_init+0x12f/0x4d0 [ 721.837907][ T1644] tc_ctl_action+0x2c7/0x7d0 [ 721.842618][ T1644] ? tcf_free_cookie_rcu+0x40/0x40 [ 721.849996][ T1644] rtnetlink_rcv_msg+0x887/0xd60 [ 721.856697][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 721.862467][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 721.869385][ T1644] ? rtnetlink_bind+0x80/0x80 [ 721.875525][ T1644] netlink_unicast+0x786/0x940 [ 721.880367][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 721.887458][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 721.894259][ T1644] ____sys_sendmsg+0x519/0x800 [ 721.899174][ T1644] ? import_iovec+0xe6/0x120 [ 721.907032][ T1644] __sys_sendmsg+0x2bf/0x370 [ 721.911741][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 721.920656][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 721.927563][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 721.935044][ T1644] do_syscall_64+0x2d/0x70 [ 721.939631][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 721.947483][ T1644] RIP: 0033:0x445c89 [ 721.951418][ T1644] RSP: 002b:00007f5a9e3ff318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 721.961966][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 0000000000445c89 [ 721.971450][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 721.981037][ T1644] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 721.990643][ T1644] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.000092][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3ff400 R15: 0000000000022000 [ 722.009693][ T1644] INFO: task syz-executor224:8467 blocked for more than 143 seconds. [ 722.019345][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.027823][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.039181][ T1644] task:syz-executor224 state:D stack:28768 pid: 8467 ppid: 8448 flags:0x00004004 [ 722.049896][ T1644] Call Trace: [ 722.054757][ T1644] __schedule+0x999/0xe70 [ 722.059152][ T1644] schedule+0x14b/0x200 [ 722.065305][ T1644] schedule_preempt_disabled+0xf/0x20 [ 722.070718][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 722.078440][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 722.084891][ T1644] mutex_lock_nested+0x1a/0x20 [ 722.089695][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 722.096768][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.102387][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 722.109232][ T1644] ? rtnetlink_bind+0x80/0x80 [ 722.115210][ T1644] netlink_unicast+0x786/0x940 [ 722.120022][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 722.126804][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 722.132048][ T1644] ____sys_sendmsg+0x519/0x800 [ 722.138854][ T1644] ? import_iovec+0xe6/0x120 [ 722.145047][ T1644] __sys_sendmsg+0x2bf/0x370 [ 722.149734][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.157760][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.166207][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.172249][ T1644] do_syscall_64+0x2d/0x70 [ 722.178682][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.186143][ T1644] RIP: 0033:0x445c89 [ 722.190079][ T1644] RSP: 002b:00007f5a9e3de318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.200513][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb438 RCX: 0000000000445c89 [ 722.209920][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 722.219557][ T1644] RBP: 00000000004cb430 R08: 0000000000000030 R09: 0000000000000000 [ 722.229046][ T1644] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.238551][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3de400 R15: 0000000000022000 [ 722.248013][ T1644] INFO: task syz-executor224:8463 blocked for more than 143 seconds. [ 722.257450][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.264794][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.274887][ T1644] task:syz-executor224 state:D stack:28240 pid: 8463 ppid: 8451 flags:0x00004004 [ 722.285810][ T1644] Call Trace: [ 722.289154][ T1644] __schedule+0x999/0xe70 [ 722.296667][ T1644] schedule+0x14b/0x200 [ 722.300882][ T1644] schedule_preempt_disabled+0xf/0x20 [ 722.308206][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 722.314947][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 722.320217][ T1644] mutex_lock_nested+0x1a/0x20 [ 722.326910][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 722.331970][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.339791][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 722.345921][ T1644] ? rtnetlink_bind+0x80/0x80 [ 722.350687][ T1644] netlink_unicast+0x786/0x940 [ 722.357497][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 722.362359][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 722.369490][ T1644] ____sys_sendmsg+0x519/0x800 [ 722.375717][ T1644] ? import_iovec+0xe6/0x120 [ 722.380382][ T1644] __sys_sendmsg+0x2bf/0x370 [ 722.387281][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.394650][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.399898][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.408116][ T1644] do_syscall_64+0x2d/0x70 [ 722.412598][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.421219][ T1644] RIP: 0033:0x445c89 [ 722.427744][ T1644] RSP: 002b:00007f5a9e3ff318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.437666][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 0000000000445c89 [ 722.447120][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 722.456529][ T1644] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 722.465899][ T1644] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.475554][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3ff400 R15: 0000000000022000 [ 722.484935][ T1644] INFO: task syz-executor224:8469 blocked for more than 144 seconds. [ 722.494470][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.500419][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.510911][ T1644] task:syz-executor224 state:D stack:28768 pid: 8469 ppid: 8451 flags:0x00004004 [ 722.521842][ T1644] Call Trace: [ 722.526502][ T1644] __schedule+0x999/0xe70 [ 722.530889][ T1644] schedule+0x14b/0x200 [ 722.537006][ T1644] schedule_preempt_disabled+0xf/0x20 [ 722.542445][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 722.549681][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 722.557418][ T1644] mutex_lock_nested+0x1a/0x20 [ 722.562269][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 722.569099][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.576003][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 722.580816][ T1644] ? rtnetlink_bind+0x80/0x80 [ 722.587337][ T1644] netlink_unicast+0x786/0x940 [ 722.592161][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 722.598994][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 722.605451][ T1644] ____sys_sendmsg+0x519/0x800 [ 722.610282][ T1644] ? import_iovec+0xe6/0x120 [ 722.616842][ T1644] __sys_sendmsg+0x2bf/0x370 [ 722.621510][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.629347][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.635850][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.641871][ T1644] do_syscall_64+0x2d/0x70 [ 722.648189][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.655393][ T1644] RIP: 0033:0x445c89 [ 722.659342][ T1644] RSP: 002b:00007f5a9e3de318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.670211][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb438 RCX: 0000000000445c89 [ 722.679773][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 722.690525][ T1644] RBP: 00000000004cb430 R08: 0000000000000030 R09: 0000000000000000 [ 722.699985][ T1644] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.709299][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3de400 R15: 0000000000022000 [ 722.718788][ T1644] INFO: task syz-executor224:8464 blocked for more than 144 seconds. [ 722.728845][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.736421][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.746317][ T1644] task:syz-executor224 state:D stack:28768 pid: 8464 ppid: 8452 flags:0x00004004 [ 722.756938][ T1644] Call Trace: [ 722.760269][ T1644] __schedule+0x999/0xe70 [ 722.766597][ T1644] schedule+0x14b/0x200 [ 722.770803][ T1644] schedule_preempt_disabled+0xf/0x20 [ 722.778212][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 722.787354][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 722.792536][ T1644] mutex_lock_nested+0x1a/0x20 [ 722.799269][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 722.805694][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 722.811309][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 722.819434][ T1644] ? rtnetlink_bind+0x80/0x80 [ 722.825488][ T1644] netlink_unicast+0x786/0x940 [ 722.830302][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 722.837038][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 722.842275][ T1644] ____sys_sendmsg+0x519/0x800 [ 722.848951][ T1644] ? import_iovec+0xe6/0x120 [ 722.854853][ T1644] __sys_sendmsg+0x2bf/0x370 [ 722.859522][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.867441][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 722.873885][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 722.879921][ T1644] do_syscall_64+0x2d/0x70 [ 722.886268][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 722.892201][ T1644] RIP: 0033:0x445c89 [ 722.898454][ T1644] RSP: 002b:00007f5a9e3ff318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 722.908233][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 0000000000445c89 [ 722.917563][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 722.927674][ T1644] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 722.937094][ T1644] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 722.947796][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3ff400 R15: 0000000000022000 [ 722.957237][ T1644] INFO: task syz-executor224:8471 blocked for more than 144 seconds. [ 722.967350][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 722.974509][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 722.984390][ T1644] task:syz-executor224 state:D stack:28768 pid: 8471 ppid: 8452 flags:0x00004004 [ 722.994975][ T1644] Call Trace: [ 722.998303][ T1644] __schedule+0x999/0xe70 [ 723.004669][ T1644] schedule+0x14b/0x200 [ 723.008872][ T1644] schedule_preempt_disabled+0xf/0x20 [ 723.016066][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 723.021436][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.028512][ T1644] mutex_lock_nested+0x1a/0x20 [ 723.034632][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.039661][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.047161][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 723.051969][ T1644] ? rtnetlink_bind+0x80/0x80 [ 723.058696][ T1644] netlink_unicast+0x786/0x940 [ 723.064838][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 723.069648][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 723.078037][ T1644] ____sys_sendmsg+0x519/0x800 [ 723.084530][ T1644] ? import_iovec+0xe6/0x120 [ 723.089213][ T1644] __sys_sendmsg+0x2bf/0x370 [ 723.095878][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.101983][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.109396][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.116861][ T1644] do_syscall_64+0x2d/0x70 [ 723.121321][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.129097][ T1644] RIP: 0033:0x445c89 [ 723.134248][ T1644] RSP: 002b:00007f5a9e3de318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.142803][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb438 RCX: 0000000000445c89 [ 723.151220][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 723.159381][ T1644] RBP: 00000000004cb430 R08: 0000000000000030 R09: 0000000000000000 [ 723.167908][ T1644] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.176041][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3de400 R15: 0000000000022000 [ 723.184612][ T1644] INFO: task syz-executor224:8468 blocked for more than 144 seconds. [ 723.193855][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 723.199784][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.209985][ T1644] task:syz-executor224 state:D stack:28768 pid: 8468 ppid: 8455 flags:0x00004004 [ 723.219436][ T1644] Call Trace: [ 723.223232][ T1644] __schedule+0x999/0xe70 [ 723.227622][ T1644] schedule+0x14b/0x200 [ 723.231804][ T1644] schedule_preempt_disabled+0xf/0x20 [ 723.237376][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 723.243220][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.248400][ T1644] mutex_lock_nested+0x1a/0x20 [ 723.253306][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.258879][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.264609][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 723.269850][ T1644] ? rtnetlink_bind+0x80/0x80 [ 723.274758][ T1644] netlink_unicast+0x786/0x940 [ 723.279983][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 723.284904][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 723.290561][ T1644] ____sys_sendmsg+0x519/0x800 [ 723.295564][ T1644] ? import_iovec+0xe6/0x120 [ 723.300723][ T1644] __sys_sendmsg+0x2bf/0x370 [ 723.305498][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.311988][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.317986][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.324114][ T1644] do_syscall_64+0x2d/0x70 [ 723.329039][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.336641][ T1644] RIP: 0033:0x445c89 [ 723.340570][ T1644] RSP: 002b:00007f5a9e3de318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.349145][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb438 RCX: 0000000000445c89 [ 723.357995][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 723.366138][ T1644] RBP: 00000000004cb430 R08: 0000000000000030 R09: 0000000000000000 [ 723.374828][ T1644] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.382935][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3de400 R15: 0000000000022000 [ 723.391604][ T1644] INFO: task syz-executor224:8461 blocked for more than 145 seconds. [ 723.400828][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 723.406919][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.416095][ T1644] task:syz-executor224 state:D stack:28768 pid: 8461 ppid: 8453 flags:0x00004004 [ 723.425500][ T1644] Call Trace: [ 723.429207][ T1644] __schedule+0x999/0xe70 [ 723.433696][ T1644] schedule+0x14b/0x200 [ 723.438300][ T1644] schedule_preempt_disabled+0xf/0x20 [ 723.443783][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 723.449562][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.454885][ T1644] mutex_lock_nested+0x1a/0x20 [ 723.460141][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.466823][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.472450][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 723.477380][ T1644] ? rtnetlink_bind+0x80/0x80 [ 723.482622][ T1644] netlink_unicast+0x786/0x940 [ 723.487552][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 723.492905][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 723.498156][ T1644] ____sys_sendmsg+0x519/0x800 [ 723.503055][ T1644] ? import_iovec+0xe6/0x120 [ 723.508104][ T1644] __sys_sendmsg+0x2bf/0x370 [ 723.512866][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.519300][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.525211][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.531314][ T1644] do_syscall_64+0x2d/0x70 [ 723.535934][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.542456][ T1644] RIP: 0033:0x445c89 [ 723.546507][ T1644] RSP: 002b:00007f5a9e3ff318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.555538][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb428 RCX: 0000000000445c89 [ 723.563624][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 723.572083][ T1644] RBP: 00000000004cb420 R08: 0000000000000000 R09: 0000000000000000 [ 723.580241][ T1644] R10: 0000000000000000 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.588857][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3ff400 R15: 0000000000022000 [ 723.598575][ T1644] INFO: task syz-executor224:8470 blocked for more than 145 seconds. [ 723.608284][ T1644] Not tainted 5.11.0-rc6-syzkaller #0 [ 723.614341][ T1644] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.623587][ T1644] task:syz-executor224 state:D stack:28768 pid: 8470 ppid: 8453 flags:0x00004004 [ 723.632975][ T1644] Call Trace: [ 723.636690][ T1644] __schedule+0x999/0xe70 [ 723.641083][ T1644] schedule+0x14b/0x200 [ 723.645392][ T1644] schedule_preempt_disabled+0xf/0x20 [ 723.651372][ T1644] __mutex_lock_common+0x124f/0x2f00 [ 723.656861][ T1644] ? rtnetlink_rcv_msg+0x83a/0xd60 [ 723.662455][ T1644] mutex_lock_nested+0x1a/0x20 [ 723.667391][ T1644] rtnetlink_rcv_msg+0x83a/0xd60 [ 723.672926][ T1644] ? rcu_read_lock_sched_held+0x41/0xb0 [ 723.678551][ T1644] netlink_rcv_skb+0x190/0x3a0 [ 723.683445][ T1644] ? rtnetlink_bind+0x80/0x80 [ 723.688583][ T1644] netlink_unicast+0x786/0x940 [ 723.693517][ T1644] netlink_sendmsg+0x9ae/0xd50 [ 723.698716][ T1644] ? netlink_getsockopt+0xa50/0xa50 [ 723.704046][ T1644] ____sys_sendmsg+0x519/0x800 [ 723.709257][ T1644] ? import_iovec+0xe6/0x120 [ 723.714047][ T1644] __sys_sendmsg+0x2bf/0x370 [ 723.719147][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.726813][ T1644] ? lockdep_hardirqs_on+0x8d/0x130 [ 723.732060][ T1644] ? syscall_enter_from_user_mode+0x24/0x190 [ 723.738884][ T1644] do_syscall_64+0x2d/0x70 [ 723.743437][ T1644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 723.749831][ T1644] RIP: 0033:0x445c89 [ 723.753893][ T1644] RSP: 002b:00007f5a9e3de318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 723.762784][ T1644] RAX: ffffffffffffffda RBX: 00000000004cb438 RCX: 0000000000445c89 [ 723.770827][ T1644] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000004 [ 723.779555][ T1644] RBP: 00000000004cb430 R08: 0000000000000030 R09: 0000000000000000 [ 723.787684][ T1644] R10: 0000000000000008 R11: 0000000000000246 R12: 6b72616d6e6e6f63 [ 723.796319][ T1644] R13: 00007ffc36aac46f R14: 00007f5a9e3de400 R15: 0000000000022000 [ 723.804534][ T1644] [ 723.804534][ T1644] Showing all locks held in the system: [ 723.812809][ T1644] 3 locks held by kworker/1:0/19: [ 723.817874][ T1644] #0: ffff888147700938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 723.829652][ T1644] #1: ffffc90000d97d78 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 723.840096][ T1644] #2: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 [ 723.850327][ T1644] 1 lock held by khungtaskd/1644: [ 723.857105][ T1644] #0: ffffffff8c711740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 723.866802][ T1644] 1 lock held by in:imklog/8160: [ 723.872205][ T1644] #0: ffff8880195b8370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 [ 723.881768][ T1644] 1 lock held by syz-executor224/8454: [ 723.888007][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: tcf_action_init_1+0x4c2/0xa80 [ 723.897673][ T1644] 1 lock held by syz-executor224/8467: [ 723.903712][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 723.913336][ T1644] 1 lock held by syz-executor224/8463: [ 723.919398][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 723.928986][ T1644] 1 lock held by syz-executor224/8469: [ 723.935003][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 723.945212][ T1644] 1 lock held by syz-executor224/8464: [ 723.950699][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 723.960342][ T1644] 1 lock held by syz-executor224/8471: [ 723.966345][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 723.975988][ T1644] 1 lock held by syz-executor224/8462: [ 723.981891][ T1644] 1 lock held by syz-executor224/8468: [ 723.988992][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 723.998624][ T1644] 1 lock held by syz-executor224/8461: [ 724.004602][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.014262][ T1644] 1 lock held by syz-executor224/8470: [ 724.020206][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.029793][ T1644] 1 lock held by syz-executor224/8465: [ 724.035808][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.045373][ T1644] 1 lock held by syz-executor224/8472: [ 724.051282][ T1644] #0: ffffffff8d6eeb48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x83a/0xd60 [ 724.060932][ T1644] [ 724.063770][ T1644] ============================================= [ 724.063770][ T1644] [ 724.072195][ T1644] NMI backtrace for cpu 0 [ 724.076695][ T1644] CPU: 0 PID: 1644 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 724.085050][ T1644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 724.095136][ T1644] Call Trace: [ 724.098440][ T1644] dump_stack+0x137/0x1be [ 724.102953][ T1644] ? nmi_cpu_backtrace+0x94/0x190 [ 724.108021][ T1644] ? asan.module_dtor+0x20/0x20 [ 724.112991][ T1644] nmi_cpu_backtrace+0x16c/0x190 [ 724.117974][ T1644] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 724.124072][ T1644] nmi_trigger_cpumask_backtrace+0x191/0x2f0 [ 724.130083][ T1644] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 724.136181][ T1644] watchdog+0xce9/0xd30 [ 724.140467][ T1644] ? hungtask_pm_notify+0x50/0x50 [ 724.145539][ T1644] kthread+0x39a/0x3c0 [ 724.149633][ T1644] ? hungtask_pm_notify+0x50/0x50 [ 724.154713][ T1644] ? kthread_blkcg+0xd0/0xd0 [ 724.159352][ T1644] ret_from_fork+0x1f/0x30 [ 724.164733][ T1644] Sending NMI from CPU 0 to CPUs 1: [ 724.170406][ C1] NMI backtrace for cpu 1 [ 724.170416][ C1] CPU: 1 PID: 4881 Comm: systemd-journal Not tainted 5.11.0-rc6-syzkaller #0 [ 724.170426][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 724.170432][ C1] RIP: 0010:_raw_spin_unlock+0x0/0x40 [ 724.170437][ C1] Code: fd f7 49 8d 7e 18 31 f6 31 d2 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 7f 9d 10 f8 48 83 c4 08 4c 89 f7 5b 41 5e e9 40 b4 12 f8 <53> 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 4e 03 11 f8 48 89 df e8 [ 724.170446][ C1] RSP: 0018:ffffc900012a7a80 EFLAGS: 00000246 [ 724.170456][ C1] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888012528000 [ 724.170461][ C1] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88802387bdf0 [ 724.170466][ C1] RBP: 1ffff1100470f7c6 R08: ffffffff81ca9adf R09: fffff52000254f49 [ 724.170471][ C1] R10: fffff52000254f49 R11: 0000000000000000 R12: ffff88802387bd60 [ 724.170476][ C1] R13: dffffc0000000000 R14: ffff88802387bdf0 R15: ffff88802387be30 [ 724.170481][ C1] FS: 00007fbd425598c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 724.170486][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 724.170491][ C1] CR2: 00007fbd3f943018 CR3: 0000000012443000 CR4: 00000000001506e0 [ 724.170495][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 724.170500][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 724.170505][ C1] Call Trace: [ 724.170508][ C1] dput+0x1d1/0x6f0 [ 724.170511][ C1] traverse_mounts+0x407/0x690 [ 724.170515][ C1] step_into+0x146/0x1e60 [ 724.170518][ C1] ? bpf_lsm_inode_permission+0x5/0x10 [ 724.170522][ C1] ? lookup_fast+0xe1/0x6f0 [ 724.170526][ C1] ? bpf_lsm_inode_permission+0x5/0x10 [ 724.170530][ C1] walk_component+0x2b7/0x6b0 [ 724.170533][ C1] ? bpf_lsm_inode_permission+0x5/0x10 [ 724.170537][ C1] link_path_walk+0x5e7/0xc10 [ 724.170541][ C1] path_lookupat+0xab/0x970 [ 724.170544][ C1] filename_lookup+0x1b0/0x5e0 [ 724.170548][ C1] ? getname_flags+0x1fe/0x640 [ 724.170551][ C1] do_faccessat+0x396/0x870 [ 724.170555][ C1] do_syscall_64+0x2d/0x70 [ 724.170558][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 724.170570][ C1] RIP: 0033:0x7fbd418149c7 [ 724.170575][ C1] Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 [ 724.170583][ C1] RSP: 002b:00007ffe1cecb228 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 724.170592][ C1] RAX: ffffffffffffffda RBX: 00007ffe1cece250 RCX: 00007fbd418149c7 [ 724.170597][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000056054936e9a3 [ 724.170602][ C1] RBP: 00007ffe1cecb370 R08: 00005605493643e5 R09: 0000000000000018 [ 724.170607][ C1] R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 [ 724.170612][ C1] R13: 0000000000000000 R14: 000056054a8e28a0 R15: 00007ffe1cecb860 [ 724.172994][ T1644] Kernel panic - not syncing: hung_task: blocked tasks [ 724.458955][ T1644] CPU: 0 PID: 1644 Comm: khungtaskd Not tainted 5.11.0-rc6-syzkaller #0 [ 724.467313][ T1644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 724.477387][ T1644] Call Trace: [ 724.480689][ T1644] dump_stack+0x137/0x1be [ 724.485061][ T1644] ? panic+0x1f3/0x800 [ 724.489288][ T1644] panic+0x291/0x800 [ 724.493208][ T1644] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 724.499386][ T1644] ? nmi_trigger_cpumask_backtrace+0x29b/0x2f0 [ 724.505570][ T1644] ? nmi_trigger_cpumask_backtrace+0x236/0x2f0 [ 724.511759][ T1644] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2f0 [ 724.517967][ T1644] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 724.524071][ T1644] watchdog+0xd29/0xd30 [ 724.528273][ T1644] ? hungtask_pm_notify+0x50/0x50 [ 724.533327][ T1644] kthread+0x39a/0x3c0 [ 724.537456][ T1644] ? hungtask_pm_notify+0x50/0x50 [ 724.542536][ T1644] ? kthread_blkcg+0xd0/0xd0 [ 724.547159][ T1644] ret_from_fork+0x1f/0x30 [ 724.552314][ T1644] Kernel Offset: disabled [ 724.556702][ T1644] Rebooting in 86400 seconds..