syzbot

general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
CPU: 0 PID: 3614 Comm: syz-executor358 Tainted: G        W         5.17.0-next-20220321-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:flush_workqueue+0xf8/0x1440 kernel/workqueue.c:2828
Code: ff 89 de e8 ea 02 2c 00 84 db 0f 84 28 0f 00 00 e8 fd fe 2b 00 48 8b 85 e8 fe ff ff 48 8d b8 c0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e f9 12 00 00 48 8b 85 e8 fe
RSP: 0018:ffffc90003affba8 EFLAGS: 00010202
RAX: 0000000000000038 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880184b57c0 RSI: ffffffff814caa33 RDI: 00000000000001c0
RBP: ffffc90003affd18 R08: 0000000000000002 R09: 0000000000000001
R10: ffffffff814caa26 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc90003affd70 R14: ffffc90003b29000 R15: ffffc90003b2a240
FS:  00007f26eaecd700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 00000000246a9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kvm_mmu_uninit_tdp_mmu+0x7f/0x170 arch/x86/kvm/mmu/tdp_mmu.c:51
 kvm_arch_destroy_vm+0x350/0x470 arch/x86/kvm/x86.c:11799
 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1144 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:4736 [inline]
 kvm_dev_ioctl+0x104d/0x1c00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4791
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f26eaf5dac9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f26eaecd308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f26eafe5448 RCX: 00007f26eaf5dac9
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000005
RBP: 00007f26eafe5440 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f26eafe544c
R13: 00007f26eafb3074 R14: 6d766b2f7665642f R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:flush_workqueue+0xf8/0x1440 kernel/workqueue.c:2828
Code: ff 89 de e8 ea 02 2c 00 84 db 0f 84 28 0f 00 00 e8 fd fe 2b 00 48 8b 85 e8 fe ff ff 48 8d b8 c0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e f9 12 00 00 48 8b 85 e8 fe
RSP: 0018:ffffc90003affba8 EFLAGS: 00010202

RAX: 0000000000000038 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880184b57c0 RSI: ffffffff814caa33 RDI: 00000000000001c0
RBP: ffffc90003affd18 R08: 0000000000000002 R09: 0000000000000001
R10: ffffffff814caa26 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffc90003affd70 R14: ffffc90003b29000 R15: ffffc90003b2a240
FS:  00007f26eaecd700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 00000000246a9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	ff 89 de e8 ea 02    	decl   0x2eae8de(%rcx)
   6:	2c 00                	sub    $0x0,%al
   8:	84 db                	test   %bl,%bl
   a:	0f 84 28 0f 00 00    	je     0xf38
  10:	e8 fd fe 2b 00       	callq  0x2bff12
  15:	48 8b 85 e8 fe ff ff 	mov    -0x118(%rbp),%rax
  1c:	48 8d b8 c0 01 00 00 	lea    0x1c0(%rax),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	74 08                	je     0x3b
  33:	3c 03                	cmp    $0x3,%al
  35:	0f 8e f9 12 00 00    	jle    0x1334
  3b:	48                   	rex.W
  3c:	8b                   	.byte 0x8b
  3d:	85 e8                	test   %ebp,%eax
  3f:	fe                   	.byte 0xfe