[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.203' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.047803][ T6828] 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. [ 70.088038][ T6828] ------------[ cut here ]------------ [ 70.093912][ T6828] WARNING: CPU: 1 PID: 6828 at include/linux/entry-kvm.h:75 kvm_arch_vcpu_ioctl_run+0x5af/0x17f0 [ 70.104914][ T6828] Kernel panic - not syncing: panic_on_warn set ... [ 70.111499][ T6828] CPU: 1 PID: 6828 Comm: syz-executor167 Not tainted 5.8.0-rc7-next-20200731-syzkaller #0 [ 70.121360][ T6828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.131398][ T6828] Call Trace: [ 70.134667][ T6828] dump_stack+0x18f/0x20d [ 70.138978][ T6828] panic+0x2e3/0x75c [ 70.142851][ T6828] ? __warn_printk+0xf3/0xf3 [ 70.147421][ T6828] ? printk+0xba/0xed [ 70.151380][ T6828] ? log_store.cold+0x16/0x16 [ 70.156033][ T6828] ? __warn.cold+0x5/0x4a [ 70.160337][ T6828] ? __warn+0xd6/0x1f2 [ 70.164383][ T6828] ? kvm_arch_vcpu_ioctl_run+0x5af/0x17f0 [ 70.170277][ T6828] __warn.cold+0x20/0x4a [ 70.174500][ T6828] ? kvm_arch_vcpu_ioctl_run+0x5af/0x17f0 [ 70.180195][ T6828] report_bug+0x1bd/0x210 [ 70.184506][ T6828] handle_bug+0x38/0x90 [ 70.188640][ T6828] exc_invalid_op+0x14/0x40 [ 70.193127][ T6828] asm_exc_invalid_op+0x12/0x20 [ 70.197954][ T6828] RIP: 0010:kvm_arch_vcpu_ioctl_run+0x5af/0x17f0 [ 70.204256][ T6828] Code: d7 74 64 00 45 85 e4 74 23 e8 4d 78 64 00 65 44 8b 25 f1 44 f2 7e 31 ff 44 89 e6 e8 bb 74 64 00 45 85 e4 74 07 e8 31 78 64 00 <0f> 0b e8 2a 78 64 00 48 8b 44 24 08 80 38 00 0f 85 1e 0f 00 00 48 [ 70.223837][ T6828] RSP: 0018:ffffc90005337d18 EFLAGS: 00010293 [ 70.229882][ T6828] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff810fc7d5 [ 70.237829][ T6828] RDX: ffff888094b5c1c0 RSI: ffffffff810fc7df RDI: 0000000000000005 [ 70.245780][ T6828] RBP: ffff8880957a4040 R08: 0000000000000001 R09: ffff8880957a407f [ 70.253737][ T6828] R10: 0000000000000000 R11: 1ffffffff184a3f1 R12: 0000000000000001 [ 70.261697][ T6828] R13: ffff8880957a4424 R14: ffff8880957a4130 R15: ffff8880957a43d0 [ 70.269657][ T6828] ? kvm_arch_vcpu_ioctl_run+0x5a5/0x17f0 [ 70.275351][ T6828] ? kvm_arch_vcpu_ioctl_run+0x5af/0x17f0 [ 70.281148][ T6828] ? kvm_arch_vcpu_ioctl_run+0x5af/0x17f0 [ 70.286945][ T6828] kvm_vcpu_ioctl+0x467/0xdf0 [ 70.291601][ T6828] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 70.297383][ T6828] ? generic_block_fiemap+0x60/0x60 [ 70.302595][ T6828] ? __up_read+0x1a1/0x7b0 [ 70.306991][ T6828] ? _down_write_nest_lock+0x150/0x150 [ 70.312429][ T6828] ? lock_is_held_type+0xbb/0xf0 [ 70.317355][ T6828] ? kvm_gfn_to_hva_cache_init+0x1a0/0x1a0 [ 70.323154][ T6828] __x64_sys_ioctl+0x193/0x200 [ 70.327899][ T6828] do_syscall_64+0x2d/0x70 [ 70.332294][ T6828] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.338167][ T6828] RIP: 0033:0x4412d9 [ 70.342041][ T6828] Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 70.361621][ T6828] RSP: 002b:00007ffe7d58e948 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.370009][ T6828] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412d9 [ 70.377957][ T6828] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 70.385926][ T6828] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 70.393873][ T6828] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402080 [ 70.401835][ T6828] R13: 0000000000402110 R14: 0000000000000000 R15: 0000000000000000 [ 70.410703][ T6828] Kernel Offset: disabled [ 70.415084][ T6828] Rebooting in 86400 seconds..