[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.112605][ T26] audit: type=1800 audit(1556030481.656:25): pid=7717 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 38.143298][ T26] audit: type=1800 audit(1556030481.656:26): pid=7717 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.185309][ T26] audit: type=1800 audit(1556030481.656:27): pid=7717 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 '10.128.1.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 50.095938][ T7872] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. [ 50.122710][ T7872] kasan: CONFIG_KASAN_INLINE enabled [ 50.128126][ T7872] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 50.136201][ T7872] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 50.143127][ T7872] CPU: 0 PID: 7872 Comm: syz-executor233 Not tainted 5.1.0-rc6-next-20190423 #29 [ 50.152209][ T7872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.162260][ T7872] RIP: 0010:vcpu_enter_guest+0xbcd/0x5fb0 [ 50.167983][ T7872] Code: 48 c1 ea 03 80 3c 02 00 0f 85 6f 48 00 00 49 8b 9f b0 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 39 48 00 00 8b 5b 78 31 ff 89 [ 50.187596][ T7872] RSP: 0018:ffff88808bd4fa00 EFLAGS: 00010006 [ 50.193668][ T7872] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff810d1ec9 [ 50.201626][ T7872] RDX: 000000000000000f RSI: ffffffff810ceef2 RDI: 0000000000000078 [ 50.209600][ T7872] RBP: ffff88808bd4fb10 R08: ffff8880a912e580 R09: ffffed1015d05dd0 [ 50.217563][ T7872] R10: ffffed1015d05dcf R11: ffff8880ae82ee7b R12: ffff88808f3e006c [ 50.225539][ T7872] R13: 0000000000000001 R14: ffff88808f3e0070 R15: ffff88808f3e0040 [ 50.233513][ T7872] FS: 00007f7adb927700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 50.242447][ T7872] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.249017][ T7872] CR2: 00007fa0427eb000 CR3: 00000000939e4000 CR4: 00000000001426f0 [ 50.256971][ T7872] Call Trace: [ 50.260259][ T7872] ? emulator_read_emulated+0x50/0x50 [ 50.265630][ T7872] ? lock_acquire+0x16f/0x3f0 [ 50.270299][ T7872] ? kvm_arch_vcpu_ioctl_run+0x240/0x1750 [ 50.276010][ T7872] kvm_arch_vcpu_ioctl_run+0x425/0x1750 [ 50.278908][ T7874] kobject: 'kvm' (0000000026f06c37): kobject_uevent_env [ 50.281550][ T7872] ? kvm_arch_vcpu_ioctl_run+0x425/0x1750 [ 50.281567][ T7872] kvm_vcpu_ioctl+0x4dc/0xf90 [ 50.281587][ T7872] ? kvm_set_memory_region+0x50/0x50 [ 50.288558][ T7874] kobject: 'kvm' (0000000026f06c37): fill_kobj_path: path = '/devices/virtual/misc/kvm' [ 50.294266][ T7872] ? tomoyo_path_number_perm+0x263/0x520 [ 50.294281][ T7872] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 50.294299][ T7872] ? __fget+0x35a/0x550 [ 50.294314][ T7872] ? kvm_set_memory_region+0x50/0x50 [ 50.294336][ T7872] do_vfs_ioctl+0xd6e/0x1390 [ 50.311994][ T7873] kasan: CONFIG_KASAN_INLINE enabled [ 50.314002][ T7872] ? ioctl_preallocate+0x210/0x210 [ 50.319635][ T7873] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 50.325469][ T7872] ? __fget+0x381/0x550 [ 50.362084][ T7872] ? ksys_dup3+0x3e0/0x3e0 [ 50.366518][ T7872] ? tomoyo_file_ioctl+0x23/0x30 [ 50.371470][ T7872] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.377733][ T7872] ? security_file_ioctl+0x93/0xc0 [ 50.382857][ T7872] ksys_ioctl+0xab/0xd0 [ 50.387036][ T7872] __x64_sys_ioctl+0x73/0xb0 [ 50.391640][ T7872] do_syscall_64+0x103/0x670 [ 50.396246][ T7872] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.402148][ T7872] RIP: 0033:0x446779 [ 50.406048][ T7872] Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.425740][ T7872] RSP: 002b:00007f7adb926db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.434156][ T7872] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 0000000000446779 [ 50.442219][ T7872] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 50.450194][ T7872] RBP: 00000000006dbc40 R08: 0000000000000000 R09: 0000000000000000 [ 50.458168][ T7872] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc4c [ 50.466148][ T7872] R13: 00007fff1cfa7c1f R14: 00007f7adb9279c0 R15: 20c49ba5e353f7cf [ 50.474133][ T7872] Modules linked in: [ 50.478047][ T7872] ---[ end trace da6276bd16a5f99d ]--- [ 50.478059][ T7873] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 50.478082][ T7873] CPU: 1 PID: 7873 Comm: syz-executor233 Tainted: G D 5.1.0-rc6-next-20190423 #29 [ 50.483536][ T7872] RIP: 0010:vcpu_enter_guest+0xbcd/0x5fb0 [ 50.490486][ T7873] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.500991][ T7872] Code: 48 c1 ea 03 80 3c 02 00 0f 85 6f 48 00 00 49 8b 9f b0 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 39 48 00 00 8b 5b 78 31 ff 89 [ 50.506715][ T7873] RIP: 0010:vcpu_enter_guest+0xbcd/0x5fb0 [ 50.516760][ T7872] RSP: 0018:ffff88808bd4fa00 EFLAGS: 00010006 [ 50.536385][ T7873] Code: 48 c1 ea 03 80 3c 02 00 0f 85 6f 48 00 00 49 8b 9f b0 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 39 48 00 00 8b 5b 78 31 ff 89 [ 50.542202][ T7872] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff810d1ec9 [ 50.548266][ T7873] RSP: 0018:ffff88808e07fa00 EFLAGS: 00010006 [ 50.567887][ T7872] RDX: 000000000000000f RSI: ffffffff810ceef2 RDI: 0000000000000078 [ 50.575876][ T7873] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff810d1ec9 [ 50.581941][ T7872] RBP: ffff88808bd4fb10 R08: ffff8880a912e580 R09: ffffed1015d05dd0 [ 50.589910][ T7873] RDX: 000000000000000f RSI: ffffffff810ceef2 RDI: 0000000000000078 [ 50.597888][ T7872] R10: ffffed1015d05dcf R11: ffff8880ae82ee7b R12: ffff88808f3e006c [ 50.605859][ T7873] RBP: ffff88808e07fb10 R08: ffff88808c30a380 R09: fffff52000bc0e01 [ 50.605878][ T7873] R10: fffff52000bc0e00 R11: ffffc90005e07003 R12: ffff8880966280ac [ 50.613854][ T7872] R13: 0000000000000001 R14: ffff88808f3e0070 R15: ffff88808f3e0040 [ 50.621830][ T7873] R13: 0000000000000001 R14: ffff8880966280b0 R15: ffff888096628080 [ 50.629806][ T7872] FS: 00007f7adb927700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 50.637781][ T7873] FS: 00007f7adb906700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 50.645789][ T7872] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.653759][ T7873] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.662688][ T7872] CR2: 00007fa0427eb000 CR3: 00000000939e4000 CR4: 00000000001426f0 [ 50.671634][ T7873] CR2: 00007fa0427ea000 CR3: 00000000939e4000 CR4: 00000000001426e0 [ 50.678195][ T7872] Kernel panic - not syncing: Fatal exception [ 50.684778][ T7873] Call Trace: [ 50.710217][ T7873] ? emulator_read_emulated+0x50/0x50 [ 50.715611][ T7873] ? lock_acquire+0x16f/0x3f0 [ 50.720484][ T7873] ? kvm_arch_vcpu_ioctl_run+0x240/0x1750 [ 50.726215][ T7873] ? __local_bh_enable_ip+0x15a/0x270 [ 50.731613][ T7873] kvm_arch_vcpu_ioctl_run+0x425/0x1750 [ 50.737172][ T7873] ? kvm_arch_vcpu_ioctl_run+0x425/0x1750 [ 50.742903][ T7873] kvm_vcpu_ioctl+0x4dc/0xf90 [ 50.747612][ T7873] ? kvm_set_memory_region+0x50/0x50 [ 50.752926][ T7873] ? tomoyo_path_number_perm+0x263/0x520 [ 50.758570][ T7873] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 50.764398][ T7873] ? kvm_set_memory_region+0x50/0x50 [ 50.769694][ T7873] do_vfs_ioctl+0xd6e/0x1390 [ 50.774301][ T7873] ? ioctl_preallocate+0x210/0x210 [ 50.779421][ T7873] ? __fget+0x381/0x550 [ 50.783592][ T7873] ? ksys_dup3+0x3e0/0x3e0 [ 50.788022][ T7873] ? tomoyo_file_ioctl+0x23/0x30 [ 50.792973][ T7873] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.799234][ T7873] ? security_file_ioctl+0x93/0xc0 [ 50.804357][ T7873] ksys_ioctl+0xab/0xd0 [ 50.808518][ T7873] __x64_sys_ioctl+0x73/0xb0 [ 50.813116][ T7873] do_syscall_64+0x103/0x670 [ 50.817719][ T7873] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.823625][ T7873] RIP: 0033:0x446779 [ 50.827523][ T7873] Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.847222][ T7873] RSP: 002b:00007f7adb905db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 50.855643][ T7873] RAX: ffffffffffffffda RBX: 00000000006dbc58 RCX: 0000000000446779 [ 50.863706][ T7873] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000008 [ 50.871681][ T7873] RBP: 00000000006dbc50 R08: 0000000000000000 R09: 0000000000000000 [ 50.879673][ T7873] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc5c [ 50.887661][ T7873] R13: 00007fff1cfa7c1f R14: 00007f7adb9069c0 R15: 20c49ba5e353f7cf [ 50.895663][ T7873] Modules linked in: [ 50.899571][ T7873] ---[ end trace da6276bd16a5f99e ]--- [ 50.905054][ T7873] RIP: 0010:vcpu_enter_guest+0xbcd/0x5fb0 [ 50.910785][ T7873] Code: 48 c1 ea 03 80 3c 02 00 0f 85 6f 48 00 00 49 8b 9f b0 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 39 48 00 00 8b 5b 78 31 ff 89 [ 50.930391][ T7873] RSP: 0018:ffff88808bd4fa00 EFLAGS: 00010006 [ 50.936458][ T7873] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff810d1ec9 [ 50.944432][ T7873] RDX: 000000000000000f RSI: ffffffff810ceef2 RDI: 0000000000000078 [ 50.952406][ T7873] RBP: ffff88808bd4fb10 R08: ffff8880a912e580 R09: ffffed1015d05dd0 [ 50.960381][ T7873] R10: ffffed1015d05dcf R11: ffff8880ae82ee7b R12: ffff88808f3e006c [ 50.968360][ T7873] R13: 0000000000000001 R14: ffff88808f3e0070 R15: ffff88808f3e0040 [ 50.976337][ T7873] FS: 00007f7adb906700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 50.985273][ T7873] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.991860][ T7873] CR2: 00007fa0427ea000 CR3: 00000000939e4000 CR4: 00000000001426e0 [ 51.812819][ T7872] Shutting down cpus with NMI [ 51.818275][ T7872] Kernel Offset: disabled [ 51.822623][ T7872] Rebooting in 86400 seconds..