------------[ cut here ]------------ WARNING: CPU: 1 PID: 13583 at ./arch/x86/include/asm/fpu/internal.h:368 copy_kernel_to_xregs /syzkaller/managers/android-49-kasan-gce/kernel/./arch/x86/include/asm/fpu/internal.h:368 [inline] WARNING: CPU: 1 PID: 13583 at ./arch/x86/include/asm/fpu/internal.h:368 __copy_kernel_to_fpregs /syzkaller/managers/android-49-kasan-gce/kernel/./arch/x86/include/asm/fpu/internal.h:451 [inline] WARNING: CPU: 1 PID: 13583 at ./arch/x86/include/asm/fpu/internal.h:368 copy_kernel_to_fpregs /syzkaller/managers/android-49-kasan-gce/kernel/./arch/x86/include/asm/fpu/internal.h:475 [inline] WARNING: CPU: 1 PID: 13583 at ./arch/x86/include/asm/fpu/internal.h:368 switch_fpu_finish /syzkaller/managers/android-49-kasan-gce/kernel/./arch/x86/include/asm/fpu/internal.h:649 [inline] WARNING: CPU: 1 PID: 13583 at ./arch/x86/include/asm/fpu/internal.h:368 __switch_to+0x6e2/0x1990 /syzkaller/managers/android-49-kasan-gce/kernel/arch/x86/kernel/process_64.c:420 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 13583 Comm: syz-executor2 Not tainted 4.9.41-gdb02484 #20 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cb40f750 ffffffff81d92609 ffffffff83a46b40 ffff8801cb40f828 ffffffff83a16500 ffffffff8104f3c2 0000000000000009 ffff8801cb40f818 ffffffff8142ddf1 0000000041b58ab3 ffffffff84184100 ffffffff8142dc35 Call Trace: Shutting down cpus with NMI Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..