BUG: using __this_cpu_write() in preemptible [00000000] code: syz.0.17/5962
caller is kvm_set_cpu_l1tf_flush_l1d arch/x86/include/asm/kvm_host.h:2486 [inline]
caller is x86_emulate_instruction+0x1a4/0x1f70 arch/x86/kvm/x86.c:9405
CPU: 1 UID: 0 PID: 5962 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 check_preemption_disabled+0x10a/0x120 lib/smp_processor_id.c:47
 kvm_set_cpu_l1tf_flush_l1d arch/x86/include/asm/kvm_host.h:2486 [inline]
 x86_emulate_instruction+0x1a4/0x1f70 arch/x86/kvm/x86.c:9405
 kvm_mmu_page_fault+0x91a/0xb70 arch/x86/kvm/mmu/mmu.c:6385
 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6624 [inline]
 vmx_handle_exit+0x10a4/0x18c0 arch/x86/kvm/vmx/vmx.c:6641
 vcpu_enter_guest arch/x86/kvm/x86.c:11461 [inline]
 vcpu_run+0x4359/0x6fc0 arch/x86/kvm/x86.c:11619
 kvm_arch_vcpu_ioctl_run+0xfc9/0x1940 arch/x86/kvm/x86.c:11958
 kvm_vcpu_ioctl+0x95c/0xe90 virt/kvm/kvm_main.c:4476
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0f9698eec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff7c8600c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0f96be5fa0 RCX: 00007f0f9698eec9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007f0f96a11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0f96be5fa0 R14: 00007f0f96be5fa0 R15: 0000000000000003
 </TASK>