[info] Using makefile-style concurrent boot in runlevel 2. [ 61.537623][ T26] audit: type=1800 audit(1568142964.712:21): pid=9196 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 61.575467][ T26] audit: type=1800 audit(1568142964.712:22): pid=9196 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.0.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.778669][ T9349] 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. [ 72.832995][ T9349] ================================================================== [ 72.841079][ T9349] BUG: KASAN: slab-out-of-bounds in handle_vmptrld+0xca0/0xda0 [ 72.848824][ T9349] Read of size 4 at addr ffff888095d2d000 by task syz-executor955/9349 [ 72.857041][ T9349] [ 72.859361][ T9349] CPU: 1 PID: 9349 Comm: syz-executor955 Not tainted 5.3.0-rc8+ #0 [ 72.867507][ T9349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.877645][ T9349] Call Trace: [ 72.880922][ T9349] dump_stack+0x1d8/0x2f8 [ 72.885255][ T9349] print_address_description+0x75/0x5b0 [ 72.890882][ T9349] ? vprintk_default+0x28/0x30 [ 72.895733][ T9349] ? vprintk_func+0x158/0x170 [ 72.900384][ T9349] ? printk+0x62/0x8d [ 72.904428][ T9349] __kasan_report+0x14b/0x1c0 [ 72.909084][ T9349] ? handle_vmptrld+0xca0/0xda0 [ 72.913998][ T9349] kasan_report+0x26/0x50 [ 72.918397][ T9349] __asan_report_load_n_noabort+0xf/0x20 [ 72.924124][ T9349] handle_vmptrld+0xca0/0xda0 [ 72.928810][ T9349] ? trace_lock_acquire+0x159/0x1d0 [ 72.934069][ T9349] ? handle_vmlaunch+0x20/0x20 [ 72.938905][ T9349] vmx_handle_exit+0x3c8/0xd50 [ 72.943732][ T9349] vcpu_enter_guest+0x3f8d/0x54b0 [ 72.948845][ T9349] ? kvm_check_async_pf_completion+0x35b/0x370 [ 72.955084][ T9349] vcpu_run+0x393/0xd40 [ 72.959340][ T9349] kvm_arch_vcpu_ioctl_run+0x636/0x900 [ 72.965385][ T9349] kvm_vcpu_ioctl+0x6cf/0xaf0 [ 72.970133][ T9349] ? kvm_vm_release+0x50/0x50 [ 72.974827][ T9349] do_vfs_ioctl+0x744/0x1730 [ 72.979485][ T9349] ? debug_smp_processor_id+0x1c/0x20 [ 72.984847][ T9349] ? fpregs_assert_state_consistent+0xb7/0xe0 [ 72.991201][ T9349] ? tomoyo_file_ioctl+0x23/0x30 [ 72.996275][ T9349] ? security_file_ioctl+0xa1/0xd0 [ 73.002460][ T9349] __x64_sys_ioctl+0xe3/0x120 [ 73.007221][ T9349] do_syscall_64+0xfe/0x140 [ 73.011918][ T9349] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.017786][ T9349] RIP: 0033:0x447269 [ 73.021750][ T9349] 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 3b d0 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.041507][ T9349] RSP: 002b:00007ffe7b94b748 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.049904][ T9349] RAX: ffffffffffffffda RBX: 00007ffe7b94b750 RCX: 0000000000447269 [ 73.057855][ T9349] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 73.065812][ T9349] RBP: 0000000000000000 R08: 0000000020003800 R09: 0000000000400e80 [ 73.073762][ T9349] R10: 00007ffe7b949b90 R11: 0000000000000246 R12: 0000000000404730 [ 73.081714][ T9349] R13: 00000000004047c0 R14: 0000000000000000 R15: 0000000000000000 [ 73.089756][ T9349] [ 73.092065][ T9349] Allocated by task 9349: [ 73.096372][ T9349] __kasan_kmalloc+0x11c/0x1b0 [ 73.101191][ T9349] kasan_kmalloc+0x9/0x10 [ 73.105581][ T9349] __kmalloc+0x254/0x340 [ 73.109825][ T9349] hcd_buffer_alloc+0x1a8/0x250 [ 73.114662][ T9349] usb_alloc_coherent+0x62/0x80 [ 73.119578][ T9349] usbdev_mmap+0x1bc/0x590 [ 73.124056][ T9349] mmap_region+0x17a4/0x1cb0 [ 73.128633][ T9349] do_mmap+0x9ef/0x1020 [ 73.132787][ T9349] vm_mmap_pgoff+0x13d/0x1d0 [ 73.137362][ T9349] ksys_mmap_pgoff+0x46b/0x560 [ 73.142111][ T9349] __x64_sys_mmap+0x103/0x120 [ 73.146866][ T9349] do_syscall_64+0xfe/0x140 [ 73.151467][ T9349] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.157436][ T9349] [ 73.159757][ T9349] Freed by task 8855: [ 73.163803][ T9349] __kasan_slab_free+0x12a/0x1e0 [ 73.168892][ T9349] kasan_slab_free+0xe/0x10 [ 73.173509][ T9349] kfree+0x115/0x200 [ 73.177413][ T9349] tomoyo_init_log+0x1d9f/0x1e70 [ 73.182596][ T9349] tomoyo_supervisor+0x2c7/0x1330 [ 73.187777][ T9349] tomoyo_env_perm+0x121/0x1a0 [ 73.192787][ T9349] tomoyo_find_next_domain+0x1685/0x1ca0 [ 73.198422][ T9349] tomoyo_bprm_check_security+0xe3/0x130 [ 73.204152][ T9349] security_bprm_check+0x55/0xb0 [ 73.209088][ T9349] search_binary_handler+0x6a/0x660 [ 73.214483][ T9349] __do_execve_file+0x1497/0x1c50 [ 73.219514][ T9349] __x64_sys_execve+0x94/0xb0 [ 73.224188][ T9349] do_syscall_64+0xfe/0x140 [ 73.228894][ T9349] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.234859][ T9349] [ 73.237173][ T9349] The buggy address belongs to the object at ffff888095d2d480 [ 73.237173][ T9349] which belongs to the cache kmalloc-8k of size 8192 [ 73.251393][ T9349] The buggy address is located 1152 bytes to the left of [ 73.251393][ T9349] 8192-byte region [ffff888095d2d480, ffff888095d2f480) [ 73.265423][ T9349] The buggy address belongs to the page: [ 73.271128][ T9349] page:ffffea0002574b00 refcount:2 mapcount:0 mapping:ffff8880aa4021c0 index:0x0 compound_mapcount: 0 [ 73.282157][ T9349] flags: 0x1fffc0000010200(slab|head) [ 73.287514][ T9349] raw: 01fffc0000010200 ffffea0002572208 ffffea000256f108 ffff8880aa4021c0 [ 73.296167][ T9349] raw: 0000000000000000 ffff888095d2d480 0000000200000001 0000000000000000 [ 73.304877][ T9349] page dumped because: kasan: bad access detected [ 73.311285][ T9349] [ 73.313593][ T9349] Memory state around the buggy address: [ 73.319754][ T9349] ffff888095d2cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 73.328315][ T9349] ffff888095d2cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 73.336367][ T9349] >ffff888095d2d000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 73.344499][ T9349] ^ [ 73.348632][ T9349] ffff888095d2d080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 73.356666][ T9349] ffff888095d2d100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 73.364707][ T9349] ================================================================== [ 73.373149][ T9349] Kernel panic - not syncing: panic_on_warn set ... [ 73.379834][ T9349] CPU: 1 PID: 9349 Comm: syz-executor955 Tainted: G B 5.3.0-rc8+ #0 [ 73.389103][ T9349] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.399255][ T9349] Call Trace: [ 73.402527][ T9349] dump_stack+0x1d8/0x2f8 [ 73.406919][ T9349] panic+0x25c/0x799 [ 73.410803][ T9349] ? __kasan_report+0x195/0x1c0 [ 73.415626][ T9349] ? trace_hardirqs_on+0x34/0x80 [ 73.420535][ T9349] ? __kasan_report+0x195/0x1c0 [ 73.425456][ T9349] __kasan_report+0x1bb/0x1c0 [ 73.430112][ T9349] ? handle_vmptrld+0xca0/0xda0 [ 73.434945][ T9349] kasan_report+0x26/0x50 [ 73.439249][ T9349] __asan_report_load_n_noabort+0xf/0x20 [ 73.444863][ T9349] handle_vmptrld+0xca0/0xda0 [ 73.449516][ T9349] ? trace_lock_acquire+0x159/0x1d0 [ 73.454689][ T9349] ? handle_vmlaunch+0x20/0x20 [ 73.459519][ T9349] vmx_handle_exit+0x3c8/0xd50 [ 73.464345][ T9349] vcpu_enter_guest+0x3f8d/0x54b0 [ 73.469448][ T9349] ? kvm_check_async_pf_completion+0x35b/0x370 [ 73.475589][ T9349] vcpu_run+0x393/0xd40 [ 73.479830][ T9349] kvm_arch_vcpu_ioctl_run+0x636/0x900 [ 73.485273][ T9349] kvm_vcpu_ioctl+0x6cf/0xaf0 [ 73.489937][ T9349] ? kvm_vm_release+0x50/0x50 [ 73.494861][ T9349] do_vfs_ioctl+0x744/0x1730 [ 73.499433][ T9349] ? debug_smp_processor_id+0x1c/0x20 [ 73.504863][ T9349] ? fpregs_assert_state_consistent+0xb7/0xe0 [ 73.510995][ T9349] ? tomoyo_file_ioctl+0x23/0x30 [ 73.515924][ T9349] ? security_file_ioctl+0xa1/0xd0 [ 73.521038][ T9349] __x64_sys_ioctl+0xe3/0x120 [ 73.525704][ T9349] do_syscall_64+0xfe/0x140 [ 73.530363][ T9349] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.536651][ T9349] RIP: 0033:0x447269 [ 73.540958][ T9349] 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 3b d0 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.561727][ T9349] RSP: 002b:00007ffe7b94b748 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 73.570220][ T9349] RAX: ffffffffffffffda RBX: 00007ffe7b94b750 RCX: 0000000000447269 [ 73.578268][ T9349] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 73.586413][ T9349] RBP: 0000000000000000 R08: 0000000020003800 R09: 0000000000400e80 [ 73.594369][ T9349] R10: 00007ffe7b949b90 R11: 0000000000000246 R12: 0000000000404730 [ 73.602416][ T9349] R13: 00000000004047c0 R14: 0000000000000000 R15: 0000000000000000 [ 73.612412][ T9349] Kernel Offset: disabled [ 73.616750][ T9349] Rebooting in 86400 seconds..