[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.529149][ T26] audit: type=1800 audit(1575139551.797:25): pid=8771 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.549084][ T26] audit: type=1800 audit(1575139551.797:26): pid=8771 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.570222][ T26] audit: type=1800 audit(1575139551.797:27): pid=8771 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 '10.128.15.202' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 529.373305][ T1098] INFO: task syz-executor194:8927 blocked for more than 143 seconds. [ 529.381817][ T1098] Not tainted 5.4.0-syzkaller #0 [ 529.387402][ T1098] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 529.396150][ T1098] syz-executor194 D27400 8927 8925 0x20020004 [ 529.402500][ T1098] Call Trace: [ 529.405945][ T1098] __schedule+0x8e1/0x1f30 [ 529.410525][ T1098] ? __sched_text_start+0x8/0x8 [ 529.415574][ T1098] ? lockdep_hardirqs_on+0x421/0x5e0 [ 529.421143][ T1098] ? __lock_sock+0x160/0x290 [ 529.426068][ T1098] ? trace_hardirqs_on+0x67/0x240 [ 529.431236][ T1098] schedule+0xdc/0x2b0 [ 529.435565][ T1098] __lock_sock+0x165/0x290 [ 529.440038][ T1098] ? __sk_dst_check+0x2e0/0x2e0 [ 529.445244][ T1098] ? finish_wait+0x260/0x260 [ 529.450261][ T1098] lock_sock_nested+0xfe/0x120 [ 529.457080][ T1098] virtio_transport_release+0xc4/0xd50 [ 529.462739][ T1098] ? virtio_transport_close_timeout+0x220/0x220 [ 529.469448][ T1098] ? rcu_read_lock_held+0x9c/0xb0 [ 529.474674][ T1098] ? __kasan_check_read+0x11/0x20 [ 529.479743][ T1098] vsock_assign_transport+0xea/0x330 [ 529.485114][ T1098] vsock_stream_connect+0x2b3/0xc70 [ 529.490494][ T1098] ? tomoyo_socket_listen_permission+0x3b0/0x3b0 [ 529.497702][ T1098] ? vsock_dgram_connect+0x470/0x470 [ 529.503049][ T1098] ? finish_wait+0x260/0x260 [ 529.507868][ T1098] ? apparmor_socket_connect+0xb6/0x160 [ 529.513948][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 529.520261][ T1098] __sys_connect_file+0x25d/0x2e0 [ 529.525409][ T1098] ? __ia32_sys_accept+0xb0/0xb0 [ 529.531102][ T1098] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 529.536907][ T1098] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 529.543136][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 529.549689][ T1098] ? __fget_light+0x1a9/0x230 [ 529.554662][ T1098] __sys_connect+0x51/0x90 [ 529.559235][ T1098] __ia32_sys_connect+0x72/0xb0 [ 529.564324][ T1098] do_fast_syscall_32+0x27b/0xe16 [ 529.569644][ T1098] entry_SYSENTER_compat+0x70/0x7f [ 529.574936][ T1098] RIP: 0023:0xf7f6aa39 [ 529.579058][ T1098] Code: Bad RIP value. [ 529.583341][ T1098] RSP: 002b:00000000ffe66c3c EFLAGS: 00000216 ORIG_RAX: 000000000000016a [ 529.593411][ T1098] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 529.601681][ T1098] RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 [ 529.610642][ T1098] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 529.619441][ T1098] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 529.627604][ T1098] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 529.635706][ T1098] INFO: task syz-executor194:8932 blocked for more than 143 seconds. [ 529.643963][ T1098] Not tainted 5.4.0-syzkaller #0 [ 529.649625][ T1098] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 529.658474][ T1098] syz-executor194 D28144 8932 8931 0x20020004 [ 529.665002][ T1098] Call Trace: [ 529.668303][ T1098] __schedule+0x8e1/0x1f30 [ 529.673132][ T1098] ? __sched_text_start+0x8/0x8 [ 529.678180][ T1098] ? lockdep_hardirqs_on+0x421/0x5e0 [ 529.683584][ T1098] ? __lock_sock+0x160/0x290 [ 529.688186][ T1098] ? trace_hardirqs_on+0x67/0x240 [ 529.693279][ T1098] schedule+0xdc/0x2b0 [ 529.697381][ T1098] __lock_sock+0x165/0x290 [ 529.701800][ T1098] ? __sk_dst_check+0x2e0/0x2e0 [ 529.706719][ T1098] ? finish_wait+0x260/0x260 [ 529.711495][ T1098] lock_sock_nested+0xfe/0x120 [ 529.716408][ T1098] virtio_transport_release+0xc4/0xd50 [ 529.721915][ T1098] ? virtio_transport_close_timeout+0x220/0x220 [ 529.728347][ T1098] ? rcu_read_lock_held+0x9c/0xb0 [ 529.733437][ T1098] ? __kasan_check_read+0x11/0x20 [ 529.738474][ T1098] vsock_assign_transport+0xea/0x330 [ 529.743818][ T1098] vsock_stream_connect+0x2b3/0xc70 [ 529.749034][ T1098] ? tomoyo_socket_listen_permission+0x3b0/0x3b0 [ 529.755559][ T1098] ? vsock_dgram_connect+0x470/0x470 [ 529.760879][ T1098] ? finish_wait+0x260/0x260 [ 529.765669][ T1098] ? apparmor_socket_connect+0xb6/0x160 [ 529.771237][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 529.777782][ T1098] __sys_connect_file+0x25d/0x2e0 [ 529.783008][ T1098] ? __ia32_sys_accept+0xb0/0xb0 [ 529.788203][ T1098] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 529.794241][ T1098] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 529.800406][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 529.806775][ T1098] ? __fget_light+0x1a9/0x230 [ 529.811477][ T1098] __sys_connect+0x51/0x90 [ 529.816478][ T1098] __ia32_sys_connect+0x72/0xb0 [ 529.821373][ T1098] do_fast_syscall_32+0x27b/0xe16 [ 529.826717][ T1098] entry_SYSENTER_compat+0x70/0x7f [ 529.831836][ T1098] RIP: 0023:0xf7f6aa39 [ 529.835957][ T1098] Code: Bad RIP value. [ 529.840022][ T1098] RSP: 002b:00000000ffe66c3c EFLAGS: 00000212 ORIG_RAX: 000000000000016a [ 529.851792][ T1098] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 529.859846][ T1098] RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 [ 529.868238][ T1098] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 529.876367][ T1098] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 529.884414][ T1098] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 529.892559][ T1098] INFO: task syz-executor194:8933 blocked for more than 143 seconds. [ 529.900783][ T1098] Not tainted 5.4.0-syzkaller #0 [ 529.906486][ T1098] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 529.915249][ T1098] syz-executor194 D28144 8933 8930 0x20020004 [ 529.921769][ T1098] Call Trace: [ 529.925173][ T1098] __schedule+0x8e1/0x1f30 [ 529.929599][ T1098] ? __sched_text_start+0x8/0x8 [ 529.934594][ T1098] ? lockdep_hardirqs_on+0x421/0x5e0 [ 529.939901][ T1098] ? __lock_sock+0x160/0x290 [ 529.944638][ T1098] ? trace_hardirqs_on+0x67/0x240 [ 529.949663][ T1098] schedule+0xdc/0x2b0 [ 529.953779][ T1098] __lock_sock+0x165/0x290 [ 529.958194][ T1098] ? __sk_dst_check+0x2e0/0x2e0 [ 529.963196][ T1098] ? finish_wait+0x260/0x260 [ 529.967804][ T1098] lock_sock_nested+0xfe/0x120 [ 529.972554][ T1098] virtio_transport_release+0xc4/0xd50 [ 529.978186][ T1098] ? virtio_transport_close_timeout+0x220/0x220 [ 529.984471][ T1098] ? rcu_read_lock_held+0x9c/0xb0 [ 529.989492][ T1098] ? __kasan_check_read+0x11/0x20 [ 529.994555][ T1098] vsock_assign_transport+0xea/0x330 [ 529.999841][ T1098] vsock_stream_connect+0x2b3/0xc70 [ 530.005087][ T1098] ? tomoyo_socket_listen_permission+0x3b0/0x3b0 [ 530.011430][ T1098] ? vsock_dgram_connect+0x470/0x470 [ 530.016765][ T1098] ? finish_wait+0x260/0x260 [ 530.021443][ T1098] ? apparmor_socket_connect+0xb6/0x160 [ 530.027041][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.033323][ T1098] __sys_connect_file+0x25d/0x2e0 [ 530.038367][ T1098] ? __ia32_sys_accept+0xb0/0xb0 [ 530.043412][ T1098] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 530.048974][ T1098] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 530.055038][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.061299][ T1098] ? __fget_light+0x1a9/0x230 [ 530.066058][ T1098] __sys_connect+0x51/0x90 [ 530.070478][ T1098] __ia32_sys_connect+0x72/0xb0 [ 530.075387][ T1098] do_fast_syscall_32+0x27b/0xe16 [ 530.080410][ T1098] entry_SYSENTER_compat+0x70/0x7f [ 530.085557][ T1098] RIP: 0023:0xf7f6aa39 [ 530.089625][ T1098] Code: Bad RIP value. [ 530.093723][ T1098] RSP: 002b:00000000ffe66c3c EFLAGS: 00000212 ORIG_RAX: 000000000000016a [ 530.102130][ T1098] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 530.110140][ T1098] RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 [ 530.118250][ T1098] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 530.126260][ T1098] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 530.134273][ T1098] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 530.142268][ T1098] INFO: task syz-executor194:8934 blocked for more than 144 seconds. [ 530.150358][ T1098] Not tainted 5.4.0-syzkaller #0 [ 530.155838][ T1098] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 530.164545][ T1098] syz-executor194 D28144 8934 8928 0x20020004 [ 530.170879][ T1098] Call Trace: [ 530.174233][ T1098] __schedule+0x8e1/0x1f30 [ 530.178650][ T1098] ? __sched_text_start+0x8/0x8 [ 530.183573][ T1098] ? lockdep_hardirqs_on+0x421/0x5e0 [ 530.188975][ T1098] ? __lock_sock+0x160/0x290 [ 530.193627][ T1098] ? trace_hardirqs_on+0x67/0x240 [ 530.198656][ T1098] schedule+0xdc/0x2b0 [ 530.202925][ T1098] __lock_sock+0x165/0x290 [ 530.207357][ T1098] ? __sk_dst_check+0x2e0/0x2e0 [ 530.212190][ T1098] ? finish_wait+0x260/0x260 [ 530.216859][ T1098] lock_sock_nested+0xfe/0x120 [ 530.221623][ T1098] virtio_transport_release+0xc4/0xd50 [ 530.227315][ T1098] ? virtio_transport_close_timeout+0x220/0x220 [ 530.233675][ T1098] ? rcu_read_lock_held+0x9c/0xb0 [ 530.238687][ T1098] ? __kasan_check_read+0x11/0x20 [ 530.243766][ T1098] vsock_assign_transport+0xea/0x330 [ 530.249051][ T1098] vsock_stream_connect+0x2b3/0xc70 [ 530.254303][ T1098] ? tomoyo_socket_listen_permission+0x3b0/0x3b0 [ 530.260642][ T1098] ? vsock_dgram_connect+0x470/0x470 [ 530.265986][ T1098] ? finish_wait+0x260/0x260 [ 530.270596][ T1098] ? apparmor_socket_connect+0xb6/0x160 [ 530.276220][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.283628][ T1098] __sys_connect_file+0x25d/0x2e0 [ 530.288800][ T1098] ? __ia32_sys_accept+0xb0/0xb0 [ 530.293794][ T1098] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 530.299362][ T1098] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 530.305390][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.311803][ T1098] ? __fget_light+0x1a9/0x230 [ 530.316559][ T1098] __sys_connect+0x51/0x90 [ 530.320985][ T1098] __ia32_sys_connect+0x72/0xb0 [ 530.325886][ T1098] do_fast_syscall_32+0x27b/0xe16 [ 530.330914][ T1098] entry_SYSENTER_compat+0x70/0x7f [ 530.336167][ T1098] RIP: 0023:0xf7f6aa39 [ 530.340267][ T1098] Code: Bad RIP value. [ 530.344388][ T1098] RSP: 002b:00000000ffe66c3c EFLAGS: 00000212 ORIG_RAX: 000000000000016a [ 530.352797][ T1098] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 530.360828][ T1098] RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 [ 530.368848][ T1098] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 530.376891][ T1098] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 530.385156][ T1098] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 530.393208][ T1098] INFO: task syz-executor194:8935 blocked for more than 144 seconds. [ 530.401562][ T1098] Not tainted 5.4.0-syzkaller #0 [ 530.407090][ T1098] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 530.415800][ T1098] syz-executor194 D28144 8935 8926 0x20020004 [ 530.422115][ T1098] Call Trace: [ 530.425442][ T1098] __schedule+0x8e1/0x1f30 [ 530.429873][ T1098] ? __sched_text_start+0x8/0x8 [ 530.434803][ T1098] ? lockdep_hardirqs_on+0x421/0x5e0 [ 530.440202][ T1098] ? __lock_sock+0x160/0x290 [ 530.444977][ T1098] ? trace_hardirqs_on+0x67/0x240 [ 530.450191][ T1098] schedule+0xdc/0x2b0 [ 530.454313][ T1098] __lock_sock+0x165/0x290 [ 530.458731][ T1098] ? __sk_dst_check+0x2e0/0x2e0 [ 530.463633][ T1098] ? finish_wait+0x260/0x260 [ 530.468235][ T1098] lock_sock_nested+0xfe/0x120 [ 530.473191][ T1098] virtio_transport_release+0xc4/0xd50 [ 530.478652][ T1098] ? virtio_transport_close_timeout+0x220/0x220 [ 530.484934][ T1098] ? rcu_read_lock_held+0x9c/0xb0 [ 530.489956][ T1098] ? __kasan_check_read+0x11/0x20 [ 530.495061][ T1098] vsock_assign_transport+0xea/0x330 [ 530.500346][ T1098] vsock_stream_connect+0x2b3/0xc70 [ 530.505848][ T1098] ? tomoyo_socket_listen_permission+0x3b0/0x3b0 [ 530.512300][ T1098] ? vsock_dgram_connect+0x470/0x470 [ 530.517676][ T1098] ? finish_wait+0x260/0x260 [ 530.522294][ T1098] ? apparmor_socket_connect+0xb6/0x160 [ 530.527976][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.534554][ T1098] __sys_connect_file+0x25d/0x2e0 [ 530.539622][ T1098] ? __ia32_sys_accept+0xb0/0xb0 [ 530.544625][ T1098] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 530.550174][ T1098] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 530.556217][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.562453][ T1098] ? __fget_light+0x1a9/0x230 [ 530.567181][ T1098] __sys_connect+0x51/0x90 [ 530.571599][ T1098] __ia32_sys_connect+0x72/0xb0 [ 530.576507][ T1098] do_fast_syscall_32+0x27b/0xe16 [ 530.581546][ T1098] entry_SYSENTER_compat+0x70/0x7f [ 530.586689][ T1098] RIP: 0023:0xf7f6aa39 [ 530.590769][ T1098] Code: Bad RIP value. [ 530.594865][ T1098] RSP: 002b:00000000ffe66c3c EFLAGS: 00000216 ORIG_RAX: 000000000000016a [ 530.603297][ T1098] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 530.611422][ T1098] RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 [ 530.619435][ T1098] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 530.627953][ T1098] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 530.635965][ T1098] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 530.643979][ T1098] INFO: task syz-executor194:8936 blocked for more than 144 seconds. [ 530.652018][ T1098] Not tainted 5.4.0-syzkaller #0 [ 530.658024][ T1098] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 530.666762][ T1098] syz-executor194 D28144 8936 8929 0x20020004 [ 530.673225][ T1098] Call Trace: [ 530.676571][ T1098] __schedule+0x8e1/0x1f30 [ 530.680984][ T1098] ? __sched_text_start+0x8/0x8 [ 530.685872][ T1098] ? lockdep_hardirqs_on+0x421/0x5e0 [ 530.691160][ T1098] ? __lock_sock+0x160/0x290 [ 530.695790][ T1098] ? trace_hardirqs_on+0x67/0x240 [ 530.700822][ T1098] schedule+0xdc/0x2b0 [ 530.704929][ T1098] __lock_sock+0x165/0x290 [ 530.709359][ T1098] ? __sk_dst_check+0x2e0/0x2e0 [ 530.714251][ T1098] ? finish_wait+0x260/0x260 [ 530.718843][ T1098] lock_sock_nested+0xfe/0x120 [ 530.723648][ T1098] virtio_transport_release+0xc4/0xd50 [ 530.729205][ T1098] ? virtio_transport_close_timeout+0x220/0x220 [ 530.735497][ T1098] ? rcu_read_lock_held+0x9c/0xb0 [ 530.740544][ T1098] ? __kasan_check_read+0x11/0x20 [ 530.745612][ T1098] vsock_assign_transport+0xea/0x330 [ 530.750991][ T1098] vsock_stream_connect+0x2b3/0xc70 [ 530.756232][ T1098] ? tomoyo_socket_listen_permission+0x3b0/0x3b0 [ 530.762557][ T1098] ? vsock_dgram_connect+0x470/0x470 [ 530.767894][ T1098] ? finish_wait+0x260/0x260 [ 530.772483][ T1098] ? apparmor_socket_connect+0xb6/0x160 [ 530.778775][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.785076][ T1098] __sys_connect_file+0x25d/0x2e0 [ 530.790087][ T1098] ? __ia32_sys_accept+0xb0/0xb0 [ 530.795083][ T1098] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 530.801174][ T1098] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 530.807203][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 530.813487][ T1098] ? __fget_light+0x1a9/0x230 [ 530.818158][ T1098] __sys_connect+0x51/0x90 [ 530.822625][ T1098] __ia32_sys_connect+0x72/0xb0 [ 530.827540][ T1098] do_fast_syscall_32+0x27b/0xe16 [ 530.832581][ T1098] entry_SYSENTER_compat+0x70/0x7f [ 530.837838][ T1098] RIP: 0023:0xf7f6aa39 [ 530.841931][ T1098] Code: Bad RIP value. [ 530.846049][ T1098] RSP: 002b:00000000ffe66c3c EFLAGS: 00000216 ORIG_RAX: 000000000000016a [ 530.854497][ T1098] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200000c0 [ 530.862453][ T1098] RDX: 0000000000000010 RSI: 000000000000016a RDI: 0000000000000003 [ 530.870470][ T1098] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 530.878625][ T1098] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 530.886633][ T1098] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 530.894663][ T1098] [ 530.894663][ T1098] Showing all locks held in the system: [ 530.902381][ T1098] 1 lock held by khungtaskd/1098: [ 530.907538][ T1098] #0: ffffffff895a4080 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 530.916928][ T1098] 1 lock held by rsyslogd/8809: [ 530.921755][ T1098] #0: ffff8880997581a0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 530.930433][ T1098] 2 locks held by getty/8899: [ 530.935135][ T1098] #0: ffff888095437090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.944109][ T1098] #1: ffffc90005f512e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 530.954118][ T1098] 2 locks held by getty/8900: [ 530.958780][ T1098] #0: ffff8880a3df6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.967757][ T1098] #1: ffffc90005f692e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 530.977368][ T1098] 2 locks held by getty/8901: [ 530.982021][ T1098] #0: ffff888096ee1090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 530.991008][ T1098] #1: ffffc90005f452e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 531.000646][ T1098] 2 locks held by getty/8902: [ 531.005354][ T1098] #0: ffff88809252e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 531.014363][ T1098] #1: ffffc90005f5d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 531.024246][ T1098] 2 locks held by getty/8903: [ 531.028920][ T1098] #0: ffff88809bddf090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 531.037979][ T1098] #1: ffffc90005f6d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 531.047626][ T1098] 2 locks held by getty/8904: [ 531.052313][ T1098] #0: ffff88809e1d9090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 531.061313][ T1098] #1: ffffc90005f652e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 531.070997][ T1098] 2 locks held by getty/8905: [ 531.075976][ T1098] #0: ffff88808c3b7090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 531.084981][ T1098] #1: ffffc90005f3d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 531.095044][ T1098] 1 lock held by syz-executor194/8927: [ 531.100501][ T1098] #0: ffff88809ffe58d0 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 [ 531.110152][ T1098] 1 lock held by syz-executor194/8932: [ 531.115649][ T1098] #0: ffff888091fec910 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 [ 531.125330][ T1098] 1 lock held by syz-executor194/8933: [ 531.130775][ T1098] #0: ffff888091fec190 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 [ 531.140399][ T1098] 1 lock held by syz-executor194/8934: [ 531.145885][ T1098] #0: ffff8880a09a6950 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 [ 531.155532][ T1098] 1 lock held by syz-executor194/8935: [ 531.160980][ T1098] #0: ffff8880a4a08890 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 [ 531.170583][ T1098] 1 lock held by syz-executor194/8936: [ 531.176070][ T1098] #0: ffff88809ffe5150 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xc70 [ 531.185665][ T1098] [ 531.187990][ T1098] ============================================= [ 531.187990][ T1098] [ 531.196645][ T1098] NMI backtrace for cpu 0 [ 531.200975][ T1098] CPU: 0 PID: 1098 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 [ 531.208937][ T1098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 531.218977][ T1098] Call Trace: [ 531.222326][ T1098] dump_stack+0x197/0x210 [ 531.226651][ T1098] nmi_cpu_backtrace.cold+0x70/0xb2 [ 531.231886][ T1098] ? vprintk_func+0x86/0x189 [ 531.236517][ T1098] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 531.242131][ T1098] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 531.248106][ T1098] arch_trigger_cpumask_backtrace+0x14/0x20 [ 531.254013][ T1098] watchdog+0xb11/0x10c0 [ 531.258275][ T1098] kthread+0x361/0x430 [ 531.262458][ T1098] ? reset_hung_task_detector+0x30/0x30 [ 531.267993][ T1098] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 531.273708][ T1098] ret_from_fork+0x24/0x30 [ 531.278223][ T1098] Sending NMI from CPU 0 to CPUs 1: [ 531.283945][ C1] NMI backtrace for cpu 1 [ 531.283950][ C1] CPU: 1 PID: 3052 Comm: kworker/1:2 Not tainted 5.4.0-syzkaller #0 [ 531.283956][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 531.283960][ C1] Workqueue: events_power_efficient gc_worker [ 531.283967][ C1] RIP: 0010:debug_lockdep_rcu_enabled.part.0+0x2a/0x60 [ 531.283978][ C1] Code: 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 65 48 8b 1c 25 c0 1e 02 00 48 8d bb 94 08 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 10 8b 93 94 08 00 [ 531.283981][ C1] RSP: 0018:ffff88809fd3fbc8 EFLAGS: 00000807 [ 531.283994][ C1] RAX: dffffc0000000000 RBX: ffff88809fd34080 RCX: 1ffffffff146e1da [ 531.283999][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88809fd34914 [ 531.284004][ C1] RBP: ffff88809fd3fbd0 R08: 1ffffffff146dba0 R09: fffffbfff146dba1 [ 531.284008][ C1] R10: fffffbfff146dba0 R11: ffffffff8a36dd07 R12: ffffffff895a4080 [ 531.284013][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 531.284018][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 531.284022][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 531.284027][ C1] CR2: 0000000001066000 CR3: 0000000097b17000 CR4: 00000000001406e0 [ 531.284032][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 531.284036][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 531.284039][ C1] Call Trace: [ 531.284042][ C1] debug_lockdep_rcu_enabled+0x71/0xa0 [ 531.284046][ C1] lock_acquire+0x330/0x410 [ 531.284048][ C1] gc_worker+0x1a4/0xdd0 [ 531.284052][ C1] ? gc_worker+0x175/0xdd0 [ 531.284055][ C1] ? init_conntrack.isra.0+0x11a0/0x11a0 [ 531.284059][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 531.284086][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 531.284090][ C1] ? trace_hardirqs_on+0x67/0x240 [ 531.284093][ C1] process_one_work+0x9af/0x1740 [ 531.284096][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 531.284100][ C1] ? lock_acquire+0x190/0x410 [ 531.284103][ C1] worker_thread+0x98/0xe40 [ 531.284106][ C1] ? trace_hardirqs_on+0x67/0x240 [ 531.284109][ C1] kthread+0x361/0x430 [ 531.284112][ C1] ? process_one_work+0x1740/0x1740 [ 531.284116][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 531.284119][ C1] ret_from_fork+0x24/0x30 [ 531.284588][ T1098] Kernel panic - not syncing: hung_task: blocked tasks [ 531.521238][ T1098] CPU: 0 PID: 1098 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 [ 531.529119][ T1098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 531.539277][ T1098] Call Trace: [ 531.542743][ T1098] dump_stack+0x197/0x210 [ 531.547283][ T1098] panic+0x2e3/0x75c [ 531.551167][ T1098] ? add_taint.cold+0x16/0x16 [ 531.555833][ T1098] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 531.561530][ T1098] ? printk_safe_flush+0xf2/0x140 [ 531.566528][ T1098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 531.572757][ T1098] ? nmi_trigger_cpumask_backtrace+0x224/0x28b [ 531.578894][ T1098] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 531.585026][ T1098] watchdog+0xb22/0x10c0 [ 531.589252][ T1098] kthread+0x361/0x430 [ 531.593298][ T1098] ? reset_hung_task_detector+0x30/0x30 [ 531.598817][ T1098] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 531.604539][ T1098] ret_from_fork+0x24/0x30 [ 531.610811][ T1098] Kernel Offset: disabled [ 531.615578][ T1098] Rebooting in 86400 seconds..