[....] 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. [ 61.751735][ T27] kauditd_printk_skb: 7 callbacks suppressed [ 61.751744][ T27] audit: type=1800 audit(1567645443.807:29): pid=9546 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 [ 61.784682][ T27] audit: type=1800 audit(1567645443.807:30): pid=9546 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 '10.128.0.219' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.854477][ T9698] 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. [ 71.881823][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x20 [ 71.891144][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x40 [ 71.900384][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x60 [ 71.909677][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x80 [ 71.919324][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x94 [ 71.928605][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x48c [ 71.937982][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000004 data 0x4ac [ 71.947332][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000005 data 0x1520 [ 71.956769][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000006 data 0x15d4 [ 71.966218][ T9698] kvm [9698]: vcpu0, guest rIP: 0xcc Hyper-V uhandled wrmsr: 0x40000007 data 0x15c4 [ 71.979338][ T9698] kasan: CONFIG_KASAN_INLINE enabled [ 71.984647][ T9698] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 71.992724][ T9698] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 71.999644][ T9698] CPU: 1 PID: 9698 Comm: syz-executor493 Not tainted 5.3.0-rc7+ #0 [ 72.007514][ T9698] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.017567][ T9698] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 72.023181][ T9698] 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 [ 72.042758][ T9698] RSP: 0018:ffff888090ebf8d0 EFLAGS: 00010202 [ 72.048798][ T9698] RAX: dffffc0000000000 RBX: ffff888090ebfa08 RCX: 0000000000000000 [ 72.056747][ T9698] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 72.064693][ T9698] RBP: ffff888090ebf928 R08: 0000000000000000 R09: 0000000000000000 [ 72.072645][ T9698] R10: fffff52000be8870 R11: ffffc90005f44383 R12: 0000000000000000 [ 72.080608][ T9698] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809015aff0 [ 72.088583][ T9698] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 72.097485][ T9698] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.104049][ T9698] CR2: 0000000000000000 CR3: 000000008b349000 CR4: 00000000001426e0 [ 72.112004][ T9698] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.119958][ T9698] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.127920][ T9698] Call Trace: [ 72.131200][ T9698] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.137506][ T9698] kvm_apic_set_irq+0x10b/0x170 [ 72.142334][ T9698] kvm_hv_process_stimers+0xd55/0x1a10 [ 72.147769][ T9698] ? kvm_hv_irq_routing_update+0x410/0x410 [ 72.154515][ T9698] ? lock_acquire+0x190/0x410 [ 72.159174][ T9698] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.165477][ T9698] ? __kasan_check_write+0x14/0x20 [ 72.170563][ T9698] vcpu_enter_guest+0x4d2/0x5e90 [ 72.175487][ T9698] ? mark_held_locks+0xf0/0xf0 [ 72.180237][ T9698] ? handle_emulation_failure+0x4e0/0x4e0 [ 72.185928][ T9698] ? lock_acquire+0x190/0x410 [ 72.190588][ T9698] ? kvm_check_async_pf_completion+0x2d8/0x440 [ 72.196722][ T9698] kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 72.202255][ T9698] ? kvm_arch_vcpu_ioctl_run+0x464/0x1750 [ 72.207951][ T9698] kvm_vcpu_ioctl+0x4dc/0xfd0 [ 72.212602][ T9698] ? kvm_write_guest_cached+0x40/0x40 [ 72.217948][ T9698] ? put_unused_fd+0x4f/0x80 [ 72.222520][ T9698] kvm_vcpu_compat_ioctl+0x1c4/0x3a0 [ 72.227812][ T9698] ? kvm_vcpu_ioctl+0xfd0/0xfd0 [ 72.232650][ T9698] ? tomoyo_file_ioctl+0x23/0x30 [ 72.237569][ T9698] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.243879][ T9698] ? security_file_ioctl+0x8d/0xc0 [ 72.248981][ T9698] ? kvm_vcpu_ioctl+0xfd0/0xfd0 [ 72.253814][ T9698] __ia32_compat_sys_ioctl+0x195/0x620 [ 72.259271][ T9698] do_fast_syscall_32+0x27b/0xdb3 [ 72.264273][ T9698] entry_SYSENTER_compat+0x70/0x7f [ 72.269369][ T9698] RIP: 0023:0xf7f22a29 [ 72.273429][ T9698] Code: b8 80 96 98 00 eb cc 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 72.293012][ T9698] RSP: 002b:00000000ffcb422c EFLAGS: 00000217 ORIG_RAX: 0000000000000036 [ 72.301400][ T9698] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000000ae80 [ 72.309353][ T9698] RDX: 0000000000000000 RSI: 0000000000000036 RDI: 00000000ffffffff [ 72.317308][ T9698] RBP: 000000004020ae46 R08: 0000000000000000 R09: 0000000000000000 [ 72.325268][ T9698] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 72.333219][ T9698] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 72.341170][ T9698] Modules linked in: [ 72.345510][ T9698] ---[ end trace 8941dc8aa89cfd24 ]--- [ 72.350990][ T9698] RIP: 0010:__apic_accept_irq+0x46/0xbc0 [ 72.356601][ T9698] 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 [ 72.376477][ T9698] RSP: 0018:ffff888090ebf8d0 EFLAGS: 00010202 [ 72.382607][ T9698] RAX: dffffc0000000000 RBX: ffff888090ebfa08 RCX: 0000000000000000 [ 72.390569][ T9698] RDX: 0000000000000013 RSI: ffffffff811599ba RDI: 0000000000000000 [ 72.398589][ T9698] RBP: ffff888090ebf928 R08: 0000000000000000 R09: 0000000000000000 [ 72.406583][ T9698] R10: fffff52000be8870 R11: ffffc90005f44383 R12: 0000000000000000 [ 72.414573][ T9698] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88809015aff0 [ 72.422558][ T9698] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000057f61840 [ 72.431492][ T9698] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 72.438064][ T9698] CR2: 0000000000000000 CR3: 000000008b349000 CR4: 00000000001426e0 [ 72.446054][ T9698] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.454200][ T9698] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.462285][ T9698] Kernel panic - not syncing: Fatal exception [ 72.469690][ T9698] Kernel Offset: disabled [ 72.474009][ T9698] Rebooting in 86400 seconds..