[....] 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. [ 64.369605][ T26] kauditd_printk_skb: 8 callbacks suppressed [ 64.369616][ T26] audit: type=1800 audit(1567650326.578:29): pid=9672 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 [ 64.403129][ T26] audit: type=1800 audit(1567650326.578:30): pid=9672 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 '10.128.10.24' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.880161][ T9824] 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. [ 75.908137][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 75.917560][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 75.926989][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 75.936288][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 75.945655][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 75.954979][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 75.964438][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 75.973948][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 75.983424][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 75.992868][ T9824] kvm [9824]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 76.006084][ T9824] kasan: CONFIG_KASAN_INLINE enabled [ 76.011395][ T9824] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 76.019546][ T9824] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 76.026518][ T9824] CPU: 0 PID: 9824 Comm: syz-executor690 Not tainted 5.3.0-rc7+ #0 [ 76.034381][ T9824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.044431][ T9824] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 76.050043][ T9824] 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 [ 76.069635][ T9824] RSP: 0018:ffff888093ba7820 EFLAGS: 00010202 [ 76.075680][ T9824] RAX: dffffc0000000000 RBX: ffff888093ba7958 RCX: 0000000000000000 [ 76.083633][ T9824] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 76.091587][ T9824] RBP: ffff888093ba7878 R08: 0000000000000000 R09: 0000000000000000 [ 76.099535][ T9824] R10: fffff52000be8c70 R11: ffffc90005f46383 R12: 0000000000000000 [ 76.107665][ T9824] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888093cdaff0 [ 76.115612][ T9824] FS: 0000555555b45880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 76.124516][ T9824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.131249][ T9824] CR2: 0000000000000000 CR3: 0000000093d3e000 CR4: 00000000001426f0 [ 76.139201][ T9824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.147150][ T9824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.155117][ T9824] Call Trace: [ 76.158396][ T9824] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.164613][ T9824] kvm_apic_set_irq+0x10b/0x170 [ 76.170051][ T9824] kvm_hv_process_stimers+0xd55/0x1a10 [ 76.175938][ T9824] ? kvm_hv_irq_routing_update+0x410/0x410 [ 76.181740][ T9824] ? lock_acquire+0x190/0x410 [ 76.186401][ T9824] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.192636][ T9824] ? __kasan_check_write+0x14/0x20 [ 76.197728][ T9824] vcpu_enter_guest+0x4d2/0x5e90 [ 76.202649][ T9824] ? mark_held_locks+0xf0/0xf0 [ 76.207387][ T9824] ? kvm_vcpu_ioctl+0x181/0xfd0 [ 76.212218][ T9824] ? handle_emulation_failure+0x4e0/0x4e0 [ 76.217931][ T9824] ? lock_acquire+0x190/0x410 [ 76.222598][ T9824] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 76.228731][ T9824] kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 76.234255][ T9824] ? kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 76.240006][ T9824] kvm_vcpu_ioctl+0x4dc/0xfd0 [ 76.244664][ T9824] ? kvm_write_guest_cached+0x40/0x40 [ 76.250012][ T9824] ? tomoyo_path_number_perm+0x263/0x520 [ 76.255622][ T9824] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 76.261410][ T9824] ? put_unused_fd+0x62/0x80 [ 76.265991][ T9824] ? rwlock_bug.part.0+0x90/0x90 [ 76.270905][ T9824] ? put_unused_fd+0x4f/0x80 [ 76.275488][ T9824] ? kvm_write_guest_cached+0x40/0x40 [ 76.280834][ T9824] do_vfs_ioctl+0xdb6/0x13e0 [ 76.285401][ T9824] ? ioctl_preallocate+0x210/0x210 [ 76.290493][ T9824] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 76.296185][ T9824] ? __fget_light+0x1a9/0x230 [ 76.300859][ T9824] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 76.307406][ T9824] ? tomoyo_file_ioctl+0x23/0x30 [ 76.312338][ T9824] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.318556][ T9824] ? security_file_ioctl+0x8d/0xc0 [ 76.323735][ T9824] ksys_ioctl+0xab/0xd0 [ 76.327909][ T9824] __x64_sys_ioctl+0x73/0xb0 [ 76.332477][ T9824] do_syscall_64+0xfd/0x6a0 [ 76.336971][ T9824] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.342840][ T9824] RIP: 0033:0x442a19 [ 76.346713][ T9824] 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 [ 76.366294][ T9824] RSP: 002b:00007fff1f651978 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 76.374681][ T9824] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000442a19 [ 76.382627][ T9824] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 76.390575][ T9824] RBP: 00000000006cd018 R08: 00000000004002c8 R09: 00000000004002c8 [ 76.398522][ T9824] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403ac0 [ 76.406470][ T9824] R13: 0000000000403b50 R14: 0000000000000000 R15: 0000000000000000 [ 76.414426][ T9824] Modules linked in: [ 76.418472][ T9824] ---[ end trace e959df2fa9ea55d4 ]--- [ 76.423936][ T9824] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 76.429616][ T9824] 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 [ 76.449247][ T9824] RSP: 0018:ffff888093ba7820 EFLAGS: 00010202 [ 76.455304][ T9824] RAX: dffffc0000000000 RBX: ffff888093ba7958 RCX: 0000000000000000 [ 76.463287][ T9824] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 76.471285][ T9824] RBP: ffff888093ba7878 R08: 0000000000000000 R09: 0000000000000000 [ 76.479280][ T9824] R10: fffff52000be8c70 R11: ffffc90005f46383 R12: 0000000000000000 [ 76.487282][ T9824] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888093cdaff0 [ 76.495243][ T9824] FS: 0000555555b45880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 76.504195][ T9824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.510791][ T9824] CR2: 0000000000000000 CR3: 0000000093d3e000 CR4: 00000000001426f0 [ 76.518776][ T9824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.526735][ T9824] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.534726][ T9824] Kernel panic - not syncing: Fatal exception [ 76.542276][ T9824] Kernel Offset: disabled [ 76.546615][ T9824] Rebooting in 86400 seconds..