WARNING: CPU: 0 PID: 3203 at arch/x86/kvm/x86.c:7375 kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3203 Comm: syzkaller815535 Not tainted 4.15.0-rc4-next-20171221+ #78 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 panic+0x1e4/0x41c kernel/panic.c:183 __warn+0x1dc/0x200 kernel/panic.c:547 report_bug+0x211/0x2d0 lib/bug.c:184 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:177 fixup_bug arch/x86/kernel/traps.c:246 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:295 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079 RIP: 0010:kvm_arch_vcpu_ioctl_run+0x1c7/0x5cb0 arch/x86/kvm/x86.c:7375 RSP: 0018:ffff8801c7fa76b0 EFLAGS: 00010293 RAX: ffff8801c6590480 RBX: ffff88016c604000 RCX: ffffffff810df6b7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880172191a20 RBP: ffff8801c7fa7a40 R08: 1ffff1002e432ddb R09: 0000000000000001 R10: ffff8801c7fa7690 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8801d2a86980 R14: ffff880172191800 R15: ffff880172191800 kvm_vcpu_ioctl+0x6f1/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2554 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x446ec9 RSP: 002b:00007f45612f2cb8 EFLAGS: 00000293 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000006dcc6c RCX: 0000000000446ec9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000290 RBP: 00000000006dcc68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007fff1af89c9f R14: 00007f45612f39c0 R15: 000000000000000c Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..