WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 paravirt_write_msr arch/x86/include/asm/paravirt.h:21 [inline]
WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 wrmsrl arch/x86/include/asm/paravirt.h:149 [inline]
WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 load_seg_legacy arch/x86/kernel/process_64.c:255 [inline]
WARNING: CPU: 1 PID: 3582 at ./arch/x86/include/asm/fpu/internal.h:340 __switch_to+0x10bd/0x13c0 arch/x86/kernel/process_64.c:455
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3582 Comm: syzkaller749144 Not tainted 4.15.0-rc6+ #245
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
Shutting down cpus with NMI
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user m[ emo r y3 3.ac1c17es59s7
]
Kernel Offset: disabled
---[ end trace f3dd3601839eaae9 ]---
Rebooting in 86400 seconds..