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: 3134 Comm: udevd Not tainted 4.15.0-rc4+ #230
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:ffff8801db407ca8 EFLAGS: 00010006
RAX: ffff8801cb01e600 RBX: 00000000001606f0 RCX: ffffffff811a2c72
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0
RBP: ffff8801db407ca8 R08: 1ffff10039644eea R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006
R13: ffff8801cb01e600 R14: ffff8801db415850 R15: ffff8801db415850
FS:  00007f9e7f2e87a0(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e7f2ee000 CR3: 00000001cb24f002 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:180 [inline]
 cr4_clear_bits arch/x86/include/asm/tlbflush.h:203 [inline]
 kvm_cpu_vmxoff arch/x86/kvm/vmx.c:3582 [inline]
 hardware_disable+0x34a/0x4b0 arch/x86/kvm/vmx.c:3588
 kvm_arch_hardware_disable+0x35/0xd0 arch/x86/kvm/x86.c:7982
 hardware_disable_nolock+0x30/0x40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3310
 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:926
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:777 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:150 [inline]
RIP: 0010:qlist_free_all+0xa9/0x160 mm/kasan/quarantine.c:166
RSP: 0018:ffff8801cb2278e0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04
RAX: 0000000000000007 RBX: 0000000000000282 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffff8801cb01eea0 RDI: 0000000000000282
RBP: ffff8801cb227918 R08: 1ffff10039644eea R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801db000dc0 R14: ffff8801c9f2c2c0 R15: ffffffff85ec8220
 quarantine_reduce+0x141/0x170 mm/kasan/quarantine.c:259
 kasan_kmalloc+0xca/0xe0 mm/kasan/kasan.c:536
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:489
 slab_post_alloc_hook mm/slab.h:442 [inline]
 slab_alloc_node mm/slab.c:3325 [inline]
 kmem_cache_alloc_node_trace+0x139/0x750 mm/slab.c:3651
 __do_kmalloc_node mm/slab.c:3671 [inline]
 __kmalloc_node+0x33/0x70 mm/slab.c:3679
 kmalloc_node include/linux/slab.h:541 [inline]
 kvmalloc_node+0x99/0xd0 mm/util.c:397
 kvmalloc include/linux/mm.h:541 [inline]
 seq_buf_alloc fs/seq_file.c:29 [inline]
 seq_read+0x7cd/0x13d0 fs/seq_file.c:205
 kernfs_fop_read+0x455/0x610 fs/kernfs/file.c:252
 __vfs_read+0xef/0xa00 fs/read_write.c:411
 vfs_read+0x11e/0x350 fs/read_write.c:447
 SYSC_read fs/read_write.c:573 [inline]
 SyS_read+0xef/0x220 fs/read_write.c:566
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x7f9e7e9f0310
RSP: 002b:00007ffdf25380b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000002358030 RCX: 00007f9e7e9f0310
RDX: 0000000000001000 RSI: 00007f9e7f2ef000 RDI: 0000000000000005
RBP: 000000000239fb80 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000002375457 R14: 0000000002358030 R15: 000000000000000b
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: ffff8801db407ca8
---[ end trace de28628d026e1034 ]---