kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3327 Comm: syzkaller267338 Not tainted 4.15.0-rc4-mm1+ #49
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76
RSP: 0018:ffff8801db207ca8 EFLAGS: 00010006
RAX: ffff8801c2c88440 RBX: 00000000001606f0 RCX: ffffffff811a4922
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0
RBP: ffff8801db207ca8 R08: 0000000000000000 R09: ffffea0007113400
R10: 000000000002ff50 R11: 0000000000000000 R12: 0000000000000006
R13: ffff8801c2c88440 R14: ffff8801db21a130 R15: ffff8801db21a130
FS:  00007fafffa43700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001c4159004 CR4: 00000000001626f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __write_cr4 arch/x86/include/asm/paravirt.h:76 [inline]
 __cr4_set arch/x86/include/asm/tlbflush.h:252 [inline]
 cr4_clear_bits arch/x86/include/asm/tlbflush.h:275 [inline]
 kvm_cpu_vmxoff arch/x86/kvm/vmx.c:3737 [inline]
 hardware_disable+0x34a/0x4b0 arch/x86/kvm/vmx.c:3743
 kvm_arch_hardware_disable+0x35/0xd0 arch/x86/kvm/x86.c:8115
 hardware_disable_nolock+0x30/0x40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3284
 flush_smp_call_function_queue+0x1f4/0x570 kernel/smp.c:243
 generic_smp_call_function_single_interrupt+0x13/0x30 kernel/smp.c:192
 smp_call_function_single_interrupt+0x103/0x640 arch/x86/kernel/smp.c:295
 call_function_single_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:942
 </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:page_expected_state mm/page_alloc.c:920 [inline]
RIP: 0010:free_pages_check mm/page_alloc.c:961 [inline]
RIP: 0010:free_pages_prepare mm/page_alloc.c:1043 [inline]
RIP: 0010:__free_pages_ok+0x1870/0x31e0 mm/page_alloc.c:1260
RSP: 0018:ffff8801c2c86de8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
RAX: dffffc0000000000 RBX: ffffea0007113400 RCX: 00000000ffffffff
RDX: ffff8801c2c86f70 RSI: ffff8801c2c86f70 RDI: ffffea0007113258
RBP: ffff8801c2c875d8 R08: 0000000000000000 R09: ffffea0007113400
R10: 000000000002ff50 R11: 0000000000000000 R12: ffff8801c2c875b0
R13: 0000000000000000 R14: ffffea0007113240 R15: 0000000000000000
 __free_pages+0xd8/0x150 mm/page_alloc.c:4306
 free_thread_stack kernel/fork.c:268 [inline]
 release_task_stack kernel/fork.c:355 [inline]
 put_task_stack+0xf2/0x270 kernel/fork.c:366
 finish_task_switch+0x4eb/0x740 kernel/sched/core.c:2684
 context_switch kernel/sched/core.c:2803 [inline]
 __schedule+0x8f3/0x2060 kernel/sched/core.c:3376
 preempt_schedule_common+0x22/0x60 kernel/sched/core.c:3515
 _cond_resched+0x1d/0x30 kernel/sched/core.c:4852
 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:34 [inline]
 percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
 cgroup_threadgroup_change_begin include/linux/cgroup-defs.h:681 [inline]
 exit_signals+0x95/0x820 kernel/signal.c:2422
 do_exit+0x2f5/0x1ad0 kernel/exit.c:815
 do_group_exit+0x149/0x400 kernel/exit.c:972
 SYSC_exit_group kernel/exit.c:983 [inline]
 SyS_exit_group+0x1d/0x20 kernel/exit.c:981
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x446db9
RSP: 002b:00007fafffa42708 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00000000006dcc24 RCX: 0000000000446db9
RDX: 0000000000446db9 RSI: 0000000000000000 RDI: 000000000000000b
RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000006dcc20 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffd5e7ee13f R14: 00007fafffa439c0 R15: 0000000000000009
Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d 
RIP: native_write_cr4+0x4/0x10 arch/x86/include/asm/special_insns.h:76 RSP: ffff8801db207ca8
---[ end trace c87c34097e2273bc ]---