[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.028356][ T26] audit: type=1800 audit(1574814734.727:25): pid=8595 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.076679][ T26] audit: type=1800 audit(1574814734.737:26): pid=8595 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.113625][ T26] audit: type=1800 audit(1574814734.737:27): pid=8595 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.18' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 541.610174][ T1071] INFO: task syz-executor436:8751 blocked for more than 143 seconds. [ 541.618839][ T1071] Not tainted 5.4.0-syzkaller #0 [ 541.624363][ T1071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 541.633099][ T1071] syz-executor436 D27416 8751 8749 0x00004004 [ 541.639594][ T1071] Call Trace: [ 541.643030][ T1071] __schedule+0x909/0x1ee0 [ 541.647470][ T1071] ? __sched_text_start+0x8/0x8 [ 541.652393][ T1071] ? preempt_schedule+0x4b/0x60 [ 541.657863][ T1071] schedule+0xdc/0x2b0 [ 541.662064][ T1071] __lock_sock+0x165/0x290 [ 541.666504][ T1071] ? __sk_dst_check+0x2e0/0x2e0 [ 541.671430][ T1071] ? finish_wait+0x260/0x260 [ 541.676114][ T1071] lock_sock_nested+0xfe/0x120 [ 541.681033][ T1071] virtio_transport_release+0xc4/0xcb0 [ 541.686500][ T1071] ? virtio_transport_close_timeout+0x130/0x130 [ 541.692896][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 541.698266][ T1071] ? lock_sock_nested+0xe2/0x120 [ 541.703251][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 541.708763][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 541.714213][ T1071] ? lock_sock_nested+0x9a/0x120 [ 541.719179][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 541.724280][ T1071] ? lock_sock_nested+0x9a/0x120 [ 541.729226][ T1071] vsock_assign_transport+0xea/0x330 [ 541.734598][ T1071] vsock_stream_connect+0x2b3/0xbe0 [ 541.740004][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 541.746417][ T1071] ? vsock_dgram_connect+0x470/0x470 [ 541.751913][ T1071] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 541.757564][ T1071] ? finish_wait+0x260/0x260 [ 541.762256][ T1071] ? apparmor_socket_connect+0xb6/0x160 [ 541.768076][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 541.774403][ T1071] __sys_connect+0x264/0x330 [ 541.779013][ T1071] ? __ia32_sys_accept+0xb0/0xb0 [ 541.784034][ T1071] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 541.790056][ T1071] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 541.796288][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 541.802565][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 541.808018][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 541.813536][ T1071] ? do_syscall_64+0x26/0x760 [ 541.818209][ T1071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 541.824332][ T1071] ? do_syscall_64+0x26/0x760 [ 541.829006][ T1071] __x64_sys_connect+0x73/0xb0 [ 541.833828][ T1071] do_syscall_64+0xfa/0x760 [ 541.838342][ T1071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 541.844878][ T1071] RIP: 0033:0x4412c9 [ 541.848779][ T1071] Code: Bad RIP value. [ 541.852887][ T1071] RSP: 002b:00007fffaee3b488 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 541.861339][ T1071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 541.869294][ T1071] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 541.877310][ T1071] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 541.885311][ T1071] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 541.893320][ T1071] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 541.901337][ T1071] INFO: task syz-executor436:8756 blocked for more than 143 seconds. [ 541.909398][ T1071] Not tainted 5.4.0-syzkaller #0 [ 541.914936][ T1071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 541.923645][ T1071] syz-executor436 D28160 8756 8755 0x00000004 [ 541.930027][ T1071] Call Trace: [ 541.933318][ T1071] __schedule+0x909/0x1ee0 [ 541.937717][ T1071] ? __sched_text_start+0x8/0x8 [ 541.942629][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 541.947916][ T1071] ? __lock_sock+0x160/0x290 [ 541.952561][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 541.957599][ T1071] schedule+0xdc/0x2b0 [ 541.961856][ T1071] __lock_sock+0x165/0x290 [ 541.966302][ T1071] ? __sk_dst_check+0x2e0/0x2e0 [ 541.971224][ T1071] ? finish_wait+0x260/0x260 [ 541.975821][ T1071] lock_sock_nested+0xfe/0x120 [ 541.980767][ T1071] virtio_transport_release+0xc4/0xcb0 [ 541.986235][ T1071] ? virtio_transport_close_timeout+0x130/0x130 [ 541.992546][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 541.997936][ T1071] ? lock_sock_nested+0xe2/0x120 [ 542.002936][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 542.008305][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 542.013674][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.018613][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 542.023715][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.028667][ T1071] vsock_assign_transport+0xea/0x330 [ 542.034022][ T1071] vsock_stream_connect+0x2b3/0xbe0 [ 542.039234][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 542.045531][ T1071] ? vsock_dgram_connect+0x470/0x470 [ 542.050848][ T1071] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 542.056467][ T1071] ? finish_wait+0x260/0x260 [ 542.061105][ T1071] ? apparmor_socket_connect+0xb6/0x160 [ 542.066648][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 542.072948][ T1071] __sys_connect+0x264/0x330 [ 542.077534][ T1071] ? __ia32_sys_accept+0xb0/0xb0 [ 542.082587][ T1071] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 542.088583][ T1071] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 542.094887][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 542.101184][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 542.106724][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 542.112228][ T1071] ? do_syscall_64+0x26/0x760 [ 542.116907][ T1071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 542.123021][ T1071] ? do_syscall_64+0x26/0x760 [ 542.127695][ T1071] __x64_sys_connect+0x73/0xb0 [ 542.132521][ T1071] do_syscall_64+0xfa/0x760 [ 542.137037][ T1071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 542.142976][ T1071] RIP: 0033:0x4412c9 [ 542.146868][ T1071] Code: Bad RIP value. [ 542.150967][ T1071] RSP: 002b:00007fffaee3b488 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 542.159380][ T1071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 542.167426][ T1071] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 542.175536][ T1071] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 542.183552][ T1071] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 542.191554][ T1071] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 542.200531][ T1071] INFO: task syz-executor436:8757 blocked for more than 143 seconds. [ 542.208955][ T1071] Not tainted 5.4.0-syzkaller #0 [ 542.214499][ T1071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 542.223204][ T1071] syz-executor436 D28160 8757 8753 0x00000004 [ 542.229615][ T1071] Call Trace: [ 542.232953][ T1071] __schedule+0x909/0x1ee0 [ 542.237729][ T1071] ? __sched_text_start+0x8/0x8 [ 542.242630][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 542.247931][ T1071] ? __lock_sock+0x160/0x290 [ 542.252563][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 542.257677][ T1071] schedule+0xdc/0x2b0 [ 542.261804][ T1071] __lock_sock+0x165/0x290 [ 542.266227][ T1071] ? __sk_dst_check+0x2e0/0x2e0 [ 542.271234][ T1071] ? finish_wait+0x260/0x260 [ 542.275833][ T1071] lock_sock_nested+0xfe/0x120 [ 542.280995][ T1071] virtio_transport_release+0xc4/0xcb0 [ 542.286558][ T1071] ? virtio_transport_close_timeout+0x130/0x130 [ 542.292848][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 542.298214][ T1071] ? lock_sock_nested+0xe2/0x120 [ 542.303497][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 542.308878][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 542.314252][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.319189][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 542.324260][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.329203][ T1071] vsock_assign_transport+0xea/0x330 [ 542.334541][ T1071] vsock_stream_connect+0x2b3/0xbe0 [ 542.339741][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 542.346749][ T1071] ? vsock_dgram_connect+0x470/0x470 [ 542.352197][ T1071] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 542.358086][ T1071] ? finish_wait+0x260/0x260 [ 542.362757][ T1071] ? apparmor_socket_connect+0xb6/0x160 [ 542.368333][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 542.374690][ T1071] __sys_connect+0x264/0x330 [ 542.379375][ T1071] ? __ia32_sys_accept+0xb0/0xb0 [ 542.384413][ T1071] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 542.390457][ T1071] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 542.396706][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 542.402992][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 542.408464][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 542.414027][ T1071] ? do_syscall_64+0x26/0x760 [ 542.418723][ T1071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 542.424975][ T1071] ? do_syscall_64+0x26/0x760 [ 542.429686][ T1071] __x64_sys_connect+0x73/0xb0 [ 542.434504][ T1071] do_syscall_64+0xfa/0x760 [ 542.439010][ T1071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 542.445066][ T1071] RIP: 0033:0x4412c9 [ 542.448973][ T1071] Code: Bad RIP value. [ 542.453106][ T1071] RSP: 002b:00007fffaee3b488 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 542.461563][ T1071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 542.469707][ T1071] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 542.477999][ T1071] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 542.486185][ T1071] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 542.494241][ T1071] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 542.502274][ T1071] INFO: task syz-executor436:8758 blocked for more than 144 seconds. [ 542.510376][ T1071] Not tainted 5.4.0-syzkaller #0 [ 542.515915][ T1071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 542.525142][ T1071] syz-executor436 D28160 8758 8750 0x00000004 [ 542.531510][ T1071] Call Trace: [ 542.534918][ T1071] __schedule+0x909/0x1ee0 [ 542.539339][ T1071] ? __sched_text_start+0x8/0x8 [ 542.544269][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 542.549569][ T1071] ? __lock_sock+0x160/0x290 [ 542.554249][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 542.559292][ T1071] schedule+0xdc/0x2b0 [ 542.563524][ T1071] __lock_sock+0x165/0x290 [ 542.567959][ T1071] ? __sk_dst_check+0x2e0/0x2e0 [ 542.572961][ T1071] ? finish_wait+0x260/0x260 [ 542.577565][ T1071] lock_sock_nested+0xfe/0x120 [ 542.583272][ T1071] virtio_transport_release+0xc4/0xcb0 [ 542.588744][ T1071] ? virtio_transport_close_timeout+0x130/0x130 [ 542.595038][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 542.600439][ T1071] ? lock_sock_nested+0xe2/0x120 [ 542.605359][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 542.610777][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 542.616061][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.621277][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 542.626322][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.631322][ T1071] vsock_assign_transport+0xea/0x330 [ 542.637571][ T1071] vsock_stream_connect+0x2b3/0xbe0 [ 542.642835][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 542.649084][ T1071] ? vsock_dgram_connect+0x470/0x470 [ 542.654526][ T1071] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 542.660207][ T1071] ? finish_wait+0x260/0x260 [ 542.664791][ T1071] ? apparmor_socket_connect+0xb6/0x160 [ 542.670382][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 542.676637][ T1071] __sys_connect+0x264/0x330 [ 542.681274][ T1071] ? __ia32_sys_accept+0xb0/0xb0 [ 542.686220][ T1071] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 542.692354][ T1071] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 542.698609][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 542.704895][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 542.710405][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 542.715858][ T1071] ? do_syscall_64+0x26/0x760 [ 542.720590][ T1071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 542.726825][ T1071] ? do_syscall_64+0x26/0x760 [ 542.732012][ T1071] __x64_sys_connect+0x73/0xb0 [ 542.736801][ T1071] do_syscall_64+0xfa/0x760 [ 542.741372][ T1071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 542.747273][ T1071] RIP: 0033:0x4412c9 [ 542.751222][ T1071] Code: Bad RIP value. [ 542.755285][ T1071] RSP: 002b:00007fffaee3b488 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 542.763756][ T1071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 542.771753][ T1071] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 542.779832][ T1071] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 542.787843][ T1071] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 542.795896][ T1071] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 542.804559][ T1071] INFO: task syz-executor436:8759 blocked for more than 144 seconds. [ 542.812672][ T1071] Not tainted 5.4.0-syzkaller #0 [ 542.818117][ T1071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 542.826882][ T1071] syz-executor436 D28160 8759 8754 0x00000004 [ 542.833266][ T1071] Call Trace: [ 542.836590][ T1071] __schedule+0x909/0x1ee0 [ 542.841252][ T1071] ? __sched_text_start+0x8/0x8 [ 542.846979][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 542.852494][ T1071] ? __lock_sock+0x160/0x290 [ 542.857173][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 542.862276][ T1071] schedule+0xdc/0x2b0 [ 542.866558][ T1071] __lock_sock+0x165/0x290 [ 542.871044][ T1071] ? __sk_dst_check+0x2e0/0x2e0 [ 542.875900][ T1071] ? finish_wait+0x260/0x260 [ 542.880558][ T1071] lock_sock_nested+0xfe/0x120 [ 542.885335][ T1071] virtio_transport_release+0xc4/0xcb0 [ 542.890847][ T1071] ? virtio_transport_close_timeout+0x130/0x130 [ 542.897142][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 542.902583][ T1071] ? lock_sock_nested+0xe2/0x120 [ 542.907525][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 542.912960][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 542.918282][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.923268][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 542.928378][ T1071] ? lock_sock_nested+0x9a/0x120 [ 542.933367][ T1071] vsock_assign_transport+0xea/0x330 [ 542.938648][ T1071] vsock_stream_connect+0x2b3/0xbe0 [ 542.943900][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 542.950168][ T1071] ? vsock_dgram_connect+0x470/0x470 [ 542.955434][ T1071] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 542.961099][ T1071] ? finish_wait+0x260/0x260 [ 542.965684][ T1071] ? apparmor_socket_connect+0xb6/0x160 [ 542.971285][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 542.977532][ T1071] __sys_connect+0x264/0x330 [ 542.982171][ T1071] ? __ia32_sys_accept+0xb0/0xb0 [ 542.987134][ T1071] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 542.993246][ T1071] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 542.999486][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 543.005785][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 543.011314][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 543.016780][ T1071] ? do_syscall_64+0x26/0x760 [ 543.021490][ T1071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 543.027561][ T1071] ? do_syscall_64+0x26/0x760 [ 543.032314][ T1071] __x64_sys_connect+0x73/0xb0 [ 543.037080][ T1071] do_syscall_64+0xfa/0x760 [ 543.041726][ T1071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 543.047614][ T1071] RIP: 0033:0x4412c9 [ 543.052953][ T1071] Code: Bad RIP value. [ 543.057033][ T1071] RSP: 002b:00007fffaee3b488 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 543.065690][ T1071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 543.073828][ T1071] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 543.081837][ T1071] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 543.089885][ T1071] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 543.097903][ T1071] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 543.105937][ T1071] INFO: task syz-executor436:8760 blocked for more than 144 seconds. [ 543.114080][ T1071] Not tainted 5.4.0-syzkaller #0 [ 543.119550][ T1071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 543.128373][ T1071] syz-executor436 D28160 8760 8752 0x00000004 [ 543.134788][ T1071] Call Trace: [ 543.138075][ T1071] __schedule+0x909/0x1ee0 [ 543.142531][ T1071] ? __sched_text_start+0x8/0x8 [ 543.147390][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 543.152728][ T1071] ? __lock_sock+0x160/0x290 [ 543.157323][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 543.162404][ T1071] schedule+0xdc/0x2b0 [ 543.166480][ T1071] __lock_sock+0x165/0x290 [ 543.171023][ T1071] ? __sk_dst_check+0x2e0/0x2e0 [ 543.175872][ T1071] ? finish_wait+0x260/0x260 [ 543.180528][ T1071] lock_sock_nested+0xfe/0x120 [ 543.185292][ T1071] virtio_transport_release+0xc4/0xcb0 [ 543.190887][ T1071] ? virtio_transport_close_timeout+0x130/0x130 [ 543.197135][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 543.202552][ T1071] ? lock_sock_nested+0xe2/0x120 [ 543.207495][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 543.212979][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 543.218287][ T1071] ? lock_sock_nested+0x9a/0x120 [ 543.223286][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 543.228316][ T1071] ? lock_sock_nested+0x9a/0x120 [ 543.233303][ T1071] vsock_assign_transport+0xea/0x330 [ 543.238585][ T1071] vsock_stream_connect+0x2b3/0xbe0 [ 543.243833][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 543.250109][ T1071] ? vsock_dgram_connect+0x470/0x470 [ 543.255378][ T1071] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 543.261052][ T1071] ? finish_wait+0x260/0x260 [ 543.265639][ T1071] ? apparmor_socket_connect+0xb6/0x160 [ 543.271237][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 543.277478][ T1071] __sys_connect+0x264/0x330 [ 543.282198][ T1071] ? __ia32_sys_accept+0xb0/0xb0 [ 543.287139][ T1071] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 543.293162][ T1071] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 543.299402][ T1071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 543.305691][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 543.311180][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 543.316619][ T1071] ? do_syscall_64+0x26/0x760 [ 543.321689][ T1071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 543.327761][ T1071] ? do_syscall_64+0x26/0x760 [ 543.332493][ T1071] __x64_sys_connect+0x73/0xb0 [ 543.337254][ T1071] do_syscall_64+0xfa/0x760 [ 543.341799][ T1071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 543.347898][ T1071] RIP: 0033:0x4412c9 [ 543.351851][ T1071] Code: Bad RIP value. [ 543.355928][ T1071] RSP: 002b:00007fffaee3b488 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 543.364383][ T1071] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 [ 543.372385][ T1071] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 543.380391][ T1071] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 543.388367][ T1071] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 [ 543.396442][ T1071] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 543.404514][ T1071] [ 543.404514][ T1071] Showing all locks held in the system: [ 543.412317][ T1071] 1 lock held by khungtaskd/1071: [ 543.417338][ T1071] #0: ffffffff88fac3c0 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 543.426929][ T1071] 1 lock held by rsyslogd/8633: [ 543.431914][ T1071] 3 locks held by getty/8723: [ 543.436592][ T1071] #0: ffff8880a4718de0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 543.445266][ T1071] #1: ffff8880a614a090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 543.454275][ T1071] #2: ffffc90005f312e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 543.464115][ T1071] 3 locks held by getty/8724: [ 543.468784][ T1071] #0: ffff8880a510d3e0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 543.477446][ T1071] #1: ffff8880a7543090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 543.486427][ T1071] #2: ffffc90005f152e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 543.496036][ T1071] 3 locks held by getty/8725: [ 543.500734][ T1071] #0: ffff88809afba420 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 543.509402][ T1071] #1: ffff8880a4a51090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 543.518937][ T1071] #2: ffffc90005f192e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 543.529169][ T1071] 3 locks held by getty/8726: [ 543.533905][ T1071] #0: ffff8880a0b1cb60 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 543.542781][ T1071] #1: ffff8880901f7090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 543.552034][ T1071] #2: ffffc90005f2d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 543.561641][ T1071] 3 locks held by getty/8727: [ 543.566300][ T1071] #0: ffff8880a0a26b20 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 543.574958][ T1071] #1: ffff8880a6155090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 543.584119][ T1071] #2: ffffc90005f212e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 543.593741][ T1071] 3 locks held by getty/8728: [ 543.598416][ T1071] #0: ffff8880a4a94620 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 543.607082][ T1071] #1: ffff8880a6004090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 543.616084][ T1071] #2: ffffc90005f392e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 543.625699][ T1071] 3 locks held by getty/8729: [ 543.630401][ T1071] #0: ffff888097afad60 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 543.638987][ T1071] #1: ffff88809a9b0090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 543.647977][ T1071] #2: ffffc90005f092e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 543.657585][ T1071] 1 lock held by syz-executor436/8751: [ 543.663165][ T1071] #0: ffff888098fd68d0 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xbe0 [ 543.672802][ T1071] 1 lock held by syz-executor436/8756: [ 543.678239][ T1071] #0: ffff8880a53b8910 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xbe0 [ 543.687869][ T1071] 1 lock held by syz-executor436/8757: [ 543.693482][ T1071] #0: ffff8880a53b8190 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xbe0 [ 543.703120][ T1071] 1 lock held by syz-executor436/8758: [ 543.708670][ T1071] #0: ffff888098fd6150 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xbe0 [ 543.718487][ T1071] 1 lock held by syz-executor436/8759: [ 543.724081][ T1071] #0: ffff8880a184c890 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xbe0 [ 543.733776][ T1071] 1 lock held by syz-executor436/8760: [ 543.739497][ T1071] #0: ffff88809dd78950 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xbe0 [ 543.749258][ T1071] [ 543.751634][ T1071] ============================================= [ 543.751634][ T1071] [ 543.760089][ T1071] NMI backtrace for cpu 0 [ 543.764419][ T1071] CPU: 0 PID: 1071 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 [ 543.772297][ T1071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 543.782338][ T1071] Call Trace: [ 543.785611][ T1071] dump_stack+0x197/0x210 [ 543.789920][ T1071] nmi_cpu_backtrace.cold+0x70/0xb2 [ 543.795107][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 543.801328][ T1071] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 543.806944][ T1071] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 543.813044][ T1071] arch_trigger_cpumask_backtrace+0x14/0x20 [ 543.818975][ T1071] watchdog+0x9d0/0xef0 [ 543.823134][ T1071] kthread+0x361/0x430 [ 543.827201][ T1071] ? reset_hung_task_detector+0x30/0x30 [ 543.832747][ T1071] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 543.838449][ T1071] ret_from_fork+0x24/0x30 [ 543.842952][ T1071] Sending NMI from CPU 0 to CPUs 1: [ 543.848230][ C1] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 [ 543.849163][ T1071] Kernel panic - not syncing: hung_task: blocked tasks [ 543.863421][ T1071] CPU: 0 PID: 1071 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 [ 543.871292][ T1071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 543.881337][ T1071] Call Trace: [ 543.884609][ T1071] dump_stack+0x197/0x210 [ 543.888937][ T1071] panic+0x2e3/0x75c [ 543.892814][ T1071] ? add_taint.cold+0x16/0x16 [ 543.897475][ T1071] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 543.903306][ T1071] ? printk_safe_flush+0xf2/0x140 [ 543.908341][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 543.914673][ T1071] ? nmi_trigger_cpumask_backtrace+0x224/0x28b [ 543.920811][ T1071] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 543.926953][ T1071] watchdog+0x9e1/0xef0 [ 543.931106][ T1071] kthread+0x361/0x430 [ 543.935154][ T1071] ? reset_hung_task_detector+0x30/0x30 [ 543.940696][ T1071] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 543.946395][ T1071] ret_from_fork+0x24/0x30 [ 543.952481][ T1071] Kernel Offset: disabled [ 543.956840][ T1071] Rebooting in 86400 seconds..