[ 65.121666][ T26] audit: type=1800 audit(1561893944.476:24): pid=9150 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 65.873756][ T26] audit: type=1800 audit(1561893945.356:25): pid=9150 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 65.912062][ T26] audit: type=1800 audit(1561893945.356:26): pid=9150 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 78.674120][ T9302] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. [ 78.713364][ T9302] BUG: unable to handle page fault for address: ffffed12f97c241f [ 78.721099][ T9302] #PF: supervisor read access in kernel mode [ 78.727057][ T9302] #PF: error_code(0x0000) - not-present page [ 78.735190][ T9302] PGD 21fff0067 P4D 21fff0067 PUD 0 [ 78.740494][ T9302] Oops: 0000 [#1] PREEMPT SMP KASAN [ 78.745669][ T9302] CPU: 0 PID: 9302 Comm: syz-executor225 Not tainted 5.2.0-rc6-next-20190628 #25 [ 78.754758][ T9302] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.764808][ T9302] RIP: 0010:coalesced_mmio_write+0x28a/0x4d0 [ 78.770787][ T9302] Code: 38 d0 7c 08 84 d2 0f 85 55 02 00 00 41 8b 47 04 48 8d 14 40 49 8d 7c d7 08 48 ba 00 00 00 00 00 fc ff df 48 89 fe 48 c1 ee 03 <80> 3c 16 00 0f 85 1b 02 00 00 48 8d 14 40 48 be 00 00 00 00 00 fc [ 78.790377][ T9302] RSP: 0018:ffff888095967168 EFLAGS: 00010a02 [ 78.796445][ T9302] RAX: 00000000f7d5760a RBX: 0000000000000000 RCX: ffffffff81083dfa [ 78.804398][ T9302] RDX: dffffc0000000000 RSI: 1ffff112f97c241f RDI: ffff8897cbe120f8 [ 78.812345][ T9302] RBP: ffff8880959671b8 R08: ffff888095d52080 R09: 0000000000000000 [ 78.820295][ T9302] R10: ffffed1012b2ce1a R11: 0000000000000003 R12: 0000000000000001 [ 78.828255][ T9302] R13: ffff8880a1c3ce10 R14: 0000000000000001 R15: ffff88808fde1000 [ 78.836210][ T9302] FS: 00005555570fb940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.845117][ T9302] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.851677][ T9302] CR2: ffffed12f97c241f CR3: 000000009307b000 CR4: 00000000001526f0 [ 78.859629][ T9302] Call Trace: [ 78.862918][ T9302] ? coalesced_mmio_destructor+0x170/0x170 [ 78.868705][ T9302] __kvm_io_bus_write+0x29b/0x380 [ 78.873800][ T9302] kvm_io_bus_write+0x15c/0x290 [ 78.878633][ T9302] ? __bpf_trace_kvm_async_get_page_class+0x30/0x30 [ 78.885200][ T9302] write_mmio+0x18e/0x510 [ 78.889509][ T9302] emulator_read_write_onepage+0x429/0xd80 [ 78.896279][ T9302] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.902500][ T9302] emulator_read_write+0x1b7/0x5a0 [ 78.907607][ T9302] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.913832][ T9302] emulator_write_emulated+0x3c/0x50 [ 78.919104][ T9302] segmented_write+0xf0/0x150 [ 78.923766][ T9302] ? em_fxsave+0x50/0x50 [ 78.927986][ T9302] ? memcpy+0x46/0x50 [ 78.931949][ T9302] writeback+0x3f4/0x6a0 [ 78.936205][ T9302] ? __emulate_int_real+0x6c0/0x6c0 [ 78.941386][ T9302] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.947606][ T9302] ? fastop+0x19a/0x220 [ 78.951745][ T9302] ? em_salc+0x8/0x8 [ 78.955619][ T9302] x86_emulate_insn+0x1911/0x4620 [ 78.960651][ T9302] ? init_decode_cache+0xc0/0xc0 [ 78.965660][ T9302] x86_emulate_instruction+0x70b/0x1cf0 [ 78.971188][ T9302] ? nonpaging_page_fault+0x5c0/0x5c0 [ 78.976549][ T9302] ? stack_trace_consume_entry+0x190/0x190 [ 78.982337][ T9302] ? write_emulate+0x40/0x40 [ 78.986903][ T9302] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 78.992599][ T9302] ? mmio_info_in_cache+0x143/0x560 [ 78.997833][ T9302] kvm_mmu_page_fault+0x370/0x1890 [ 79.002929][ T9302] ? kasan_check_read+0x11/0x20 [ 79.007757][ T9302] ? mark_lock+0xc0/0x11e0 [ 79.012150][ T9302] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 79.018366][ T9302] ? __kvm_mmu_zap_all+0x350/0x350 [ 79.023452][ T9302] ? mark_lock+0xc0/0x11e0 [ 79.027853][ T9302] handle_ept_violation+0x1e1/0x530 [ 79.033029][ T9302] ? handle_pause+0x500/0x500 [ 79.037704][ T9302] vmx_handle_exit+0x299/0x15a0 [ 79.042550][ T9302] vcpu_enter_guest+0xf74/0x5d90 [ 79.047465][ T9302] ? enter_smm+0x2080/0x2080 [ 79.052395][ T9302] ? lock_acquire+0x190/0x410 [ 79.057051][ T9302] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 79.063183][ T9302] kvm_arch_vcpu_ioctl_run+0x463/0x1790 [ 79.068706][ T9302] ? kvm_arch_vcpu_ioctl_run+0x463/0x1790 [ 79.074405][ T9302] kvm_vcpu_ioctl+0x4dc/0xfc0 [ 79.079059][ T9302] ? kvm_vcpu_block+0xd80/0xd80 [ 79.083886][ T9302] ? tomoyo_path_number_perm+0x263/0x520 [ 79.089529][ T9302] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 79.095315][ T9302] ? find_held_lock+0x35/0x130 [ 79.100073][ T9302] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 79.105775][ T9302] ? __set_current_blocked+0xd6/0x110 [ 79.111127][ T9302] ? kvm_vcpu_block+0xd80/0xd80 [ 79.115969][ T9302] do_vfs_ioctl+0xdb6/0x13e0 [ 79.120560][ T9302] ? ioctl_preallocate+0x210/0x210 [ 79.125647][ T9302] ? __fdget+0x1b/0x20 [ 79.129693][ T9302] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.135914][ T9302] ? sockfd_lookup_light+0xcb/0x180 [ 79.141092][ T9302] ? __sys_sendmsg+0x131/0x1d0 [ 79.145831][ T9302] ? __sys_sendmsg_sock+0xd0/0xd0 [ 79.150844][ T9302] ? tomoyo_file_ioctl+0x23/0x30 [ 79.155761][ T9302] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.161979][ T9302] ? security_file_ioctl+0x8d/0xc0 [ 79.167064][ T9302] ksys_ioctl+0xab/0xd0 [ 79.171199][ T9302] __x64_sys_ioctl+0x73/0xb0 [ 79.175770][ T9302] do_syscall_64+0xfd/0x6a0 [ 79.180255][ T9302] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.186129][ T9302] RIP: 0033:0x4444e9 [ 79.190002][ T9302] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 1b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 79.209767][ T9302] RSP: 002b:00007ffdc5f54e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 79.218174][ T9302] RAX: ffffffffffffffda RBX: 00007ffdc5f54e50 RCX: 00000000004444e9 [ 79.226125][ T9302] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 79.234090][ T9302] RBP: 0000000000000000 R08: 0000000000402240 R09: 0000000000402240 [ 79.242061][ T9302] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000405590 [ 79.250012][ T9302] R13: 0000000000405620 R14: 0000000000000000 R15: 0000000000000000 [ 79.257965][ T9302] Modules linked in: [ 79.261842][ T9302] CR2: ffffed12f97c241f [ 79.265977][ T9302] ---[ end trace 1377fbcddaf2f288 ]--- [ 79.271444][ T9302] RIP: 0010:coalesced_mmio_write+0x28a/0x4d0 [ 79.277402][ T9302] Code: 38 d0 7c 08 84 d2 0f 85 55 02 00 00 41 8b 47 04 48 8d 14 40 49 8d 7c d7 08 48 ba 00 00 00 00 00 fc ff df 48 89 fe 48 c1 ee 03 <80> 3c 16 00 0f 85 1b 02 00 00 48 8d 14 40 48 be 00 00 00 00 00 fc [ 79.297004][ T9302] RSP: 0018:ffff888095967168 EFLAGS: 00010a02 [ 79.303073][ T9302] RAX: 00000000f7d5760a RBX: 0000000000000000 RCX: ffffffff81083dfa [ 79.311043][ T9302] RDX: dffffc0000000000 RSI: 1ffff112f97c241f RDI: ffff8897cbe120f8 [ 79.318994][ T9302] RBP: ffff8880959671b8 R08: ffff888095d52080 R09: 0000000000000000 [ 79.326942][ T9302] R10: ffffed1012b2ce1a R11: 0000000000000003 R12: 0000000000000001 [ 79.334905][ T9302] R13: ffff8880a1c3ce10 R14: 0000000000000001 R15: ffff88808fde1000 [ 79.342877][ T9302] FS: 00005555570fb940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 79.351785][ T9302] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.358351][ T9302] CR2: ffffed12f97c241f CR3: 000000009307b000 CR4: 00000000001526f0 [ 79.366313][ T9302] Kernel panic - not syncing: Fatal exception [ 79.373470][ T9302] Kernel Offset: disabled [ 79.377810][ T9302] Rebooting in 86400 seconds..