[....] 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. [ 62.136828][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 62.136837][ T26] audit: type=1800 audit(1567645719.810:29): pid=9598 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 62.163446][ T26] audit: type=1800 audit(1567645719.810:30): pid=9598 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.443501][ T9749] 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. [ 81.471964][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 81.481590][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 81.491752][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 81.501071][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 81.510715][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 81.520528][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 81.530222][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 81.539729][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 81.549523][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 81.559160][ T9749] kvm [9749]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 81.572886][ T9749] kasan: CONFIG_KASAN_INLINE enabled [ 81.578380][ T9749] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 81.586535][ T9749] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 81.593489][ T9749] CPU: 0 PID: 9749 Comm: syz-executor126 Not tainted 5.3.0-rc7+ #0 [ 81.601449][ T9749] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.611651][ T9749] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 81.617376][ T9749] Code: c0 44 89 45 d4 4c 89 4d c8 e8 96 db 5c 00 49 8d 86 98 00 00 00 48 89 c2 48 89 45 b8 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 65 0a 00 00 4d 8b be 98 00 00 00 0f 1f 44 00 00 [ 81.637174][ T9749] RSP: 0018:ffff88809371f820 EFLAGS: 00010202 [ 81.643230][ T9749] RAX: dffffc0000000000 RBX: ffff88809371f958 RCX: 0000000000000000 [ 81.651236][ T9749] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 81.659240][ T9749] RBP: ffff88809371f878 R08: 0000000000000000 R09: 0000000000000000 [ 81.667328][ T9749] R10: fffff52000bebc70 R11: ffffc90005f5e383 R12: 0000000000000000 [ 81.675313][ T9749] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809445aff0 [ 81.683479][ T9749] FS: 00005555560ed880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.692666][ T9749] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.699494][ T9749] CR2: 0000000000000000 CR3: 0000000098e68000 CR4: 00000000001426f0 [ 81.707586][ T9749] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.715788][ T9749] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.723986][ T9749] Call Trace: [ 81.727380][ T9749] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.733611][ T9749] kvm_apic_set_irq+0x10b/0x170 [ 81.738453][ T9749] kvm_hv_process_stimers+0xd55/0x1a10 [ 81.744106][ T9749] ? kvm_hv_irq_routing_update+0x410/0x410 [ 81.749902][ T9749] ? lock_acquire+0x190/0x410 [ 81.754573][ T9749] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.760899][ T9749] ? __kasan_check_write+0x14/0x20 [ 81.766178][ T9749] vcpu_enter_guest+0x4d2/0x5e90 [ 81.771105][ T9749] ? handle_emulation_failure+0x4e0/0x4e0 [ 81.776810][ T9749] ? lock_acquire+0x190/0x410 [ 81.781523][ T9749] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 81.787709][ T9749] kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 81.793333][ T9749] ? kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 81.799077][ T9749] kvm_vcpu_ioctl+0x4dc/0xfd0 [ 81.803747][ T9749] ? kvm_write_guest_cached+0x40/0x40 [ 81.809239][ T9749] ? tomoyo_path_number_perm+0x263/0x520 [ 81.814994][ T9749] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 81.820790][ T9749] ? put_unused_fd+0x62/0x80 [ 81.825377][ T9749] ? rwlock_bug.part.0+0x90/0x90 [ 81.830393][ T9749] ? put_unused_fd+0x4f/0x80 [ 81.834977][ T9749] ? kvm_write_guest_cached+0x40/0x40 [ 81.840467][ T9749] do_vfs_ioctl+0xdb6/0x13e0 [ 81.845046][ T9749] ? ioctl_preallocate+0x210/0x210 [ 81.850144][ T9749] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 81.855852][ T9749] ? __fget_light+0x1a9/0x230 [ 81.860524][ T9749] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.866755][ T9749] ? tomoyo_file_ioctl+0x23/0x30 [ 81.871678][ T9749] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.877907][ T9749] ? security_file_ioctl+0x8d/0xc0 [ 81.883093][ T9749] ksys_ioctl+0xab/0xd0 [ 81.887233][ T9749] __x64_sys_ioctl+0x73/0xb0 [ 81.891815][ T9749] do_syscall_64+0xfd/0x6a0 [ 81.896323][ T9749] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.902322][ T9749] RIP: 0033:0x442a19 [ 81.906224][ T9749] 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 [ 81.926618][ T9749] RSP: 002b:00007ffc21fa0e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 81.935257][ T9749] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 81.943744][ T9749] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 81.951771][ T9749] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 81.959776][ T9749] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 81.968019][ T9749] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 81.976188][ T9749] Modules linked in: [ 81.980224][ T9749] ---[ end trace 8565178e392fdd45 ]--- [ 81.986433][ T9749] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 81.992426][ T9749] Code: c0 44 89 45 d4 4c 89 4d c8 e8 96 db 5c 00 49 8d 86 98 00 00 00 48 89 c2 48 89 45 b8 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 65 0a 00 00 4d 8b be 98 00 00 00 0f 1f 44 00 00 [ 82.012644][ T9749] RSP: 0018:ffff88809371f820 EFLAGS: 00010202 [ 82.018876][ T9749] RAX: dffffc0000000000 RBX: ffff88809371f958 RCX: 0000000000000000 [ 82.026915][ T9749] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 82.035153][ T9749] RBP: ffff88809371f878 R08: 0000000000000000 R09: 0000000000000000 [ 82.043204][ T9749] R10: fffff52000bebc70 R11: ffffc90005f5e383 R12: 0000000000000000 [ 82.051382][ T9749] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809445aff0 [ 82.059435][ T9749] FS: 00005555560ed880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.068392][ T9749] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.074991][ T9749] CR2: 0000000000000000 CR3: 0000000098e68000 CR4: 00000000001426f0 [ 82.082998][ T9749] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.091102][ T9749] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.099244][ T9749] Kernel panic - not syncing: Fatal exception [ 82.107277][ T9749] Kernel Offset: disabled [ 82.111614][ T9749] Rebooting in 86400 seconds..