------------[ cut here ]------------ WARNING: CPU: 0 PID: 10009 at arch/x86/include/asm/fpu/internal.h:539 __fpregs_load_activate arch/x86/include/asm/fpu/internal.h:539 [inline] WARNING: CPU: 0 PID: 10009 at arch/x86/include/asm/fpu/internal.h:539 switch_fpu_return+0x437/0x4f0 arch/x86/kernel/fpu/core.c:343 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 10009 Comm: kworker/0:4 Not tainted 5.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events async_pf_execute Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:__fpregs_load_activate arch/x86/include/asm/fpu/internal.h:539 [inline] RIP: 0010:switch_fpu_return+0x437/0x4f0 arch/x86/kernel/fpu/core.c:343 Code: 0f 94 c6 31 ff 44 89 f6 e8 06 8f 4a 00 45 84 f6 0f 84 7f fd ff ff e8 b8 8d 4a 00 e8 a4 c9 d5 ff e9 70 fd ff ff e8 a9 8d 4a 00 <0f> 0b e9 b6 fd ff ff e8 9d 8d 4a 00 0f 0b e9 18 fd ff ff e8 91 8d RSP: 0018:ffffc900020afa80 EFLAGS: 00010293 RAX: ffff888092434500 RBX: ffff888092434500 RCX: ffffffff812a9ccf RDX: 0000000000000000 RSI: ffffffff812aa047 RDI: 0000000000000005 RBP: ffffc900020afb10 R08: ffff888092434500 R09: ffffed10124868a1 R10: ffffed10124868a0 R11: ffff888092434507 R12: 1ffff92000415f51 R13: ffff888092435a00 R14: 0000000000200000 R15: ffffc900020afae8 kvm_arch_vcpu_load+0x66e/0x950 arch/x86/kvm/x86.c:3463 vcpu_load+0x43/0x90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:201 kvm_unload_vcpu_mmu arch/x86/kvm/x86.c:9543 [inline] kvm_free_vcpus arch/x86/kvm/x86.c:9558 [inline] kvm_arch_destroy_vm+0x184/0x5f0 arch/x86/kvm/x86.c:9663 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:816 [inline] kvm_put_kvm+0x5a5/0xcc0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:837 async_pf_execute+0x3bf/0x800 arch/x86/kvm/../../../virt/kvm/async_pf.c:101 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264 worker_thread+0x98/0xe40 kernel/workqueue.c:2410 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..