R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
------------[ cut here ]------------
kernel BUG at mm/page_table_check.c:148!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 2 PID: 6136 Comm: syz-executor.3 Not tainted 6.4.0-syzkaller-01647-g6e2332e0ab53 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:__page_table_check_zero+0x40a/0x5d0 mm/page_table_check.c:148
Code: 0f 84 f0 fc ff ff e8 65 25 a2 ff 48 83 eb 01 48 89 dd e9 ea fc ff ff e8 54 25 a2 ff 0f 0b e8 4d 25 a2 ff 0f 0b e8 46 25 a2 ff <0f> 0b e8 3f 25 a2 ff 49 8b 6c 24 08 31 ff 48 89 eb 83 e3 01 48 89
RSP: 0018:ffffc90002a57ac0 EFLAGS: 00010212
RAX: 0000000000025f74 RBX: 0000000000000001 RCX: ffffc9000c403000
RDX: 0000000000040000 RSI: ffffffff81e281aa RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888013c6c900
R13: 0000000000000002 R14: 0000000000000004 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7f7eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7353168 CR3: 000000001d447000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 page_table_check_free include/linux/page_table_check.h:46 [inline]
 free_pages_prepare mm/page_alloc.c:1309 [inline]
 free_unref_page_prepare+0x70f/0xcb0 mm/page_alloc.c:2577
 free_unref_page+0x33/0x370 mm/page_alloc.c:2672
 hcd_buffer_free_pages+0xe8/0x180 drivers/usb/core/buffer.c:210
 dec_usb_memory_use_count+0x27a/0x400 drivers/usb/core/devio.c:198
 mmap_region+0x1ae0/0x28e0 mm/mmap.c:2770
 do_mmap+0x837/0xf60 mm/mmap.c:1394
 vm_mmap_pgoff+0x1a2/0x3b0 mm/util.c:543
 ksys_mmap_pgoff+0x42b/0x5b0 mm/mmap.c:1440
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f83579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7f7e5cc EFLAGS: 00000296 ORIG_RAX: 00000000000000c0
RAX: ffffffffffffffda RBX: 0000000020ffb000 RCX: 0000000000003000
RDX: 0000000000000006 RSI: 0000000000000012 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__page_table_check_zero+0x40a/0x5d0 mm/page_table_check.c:148
Code: 0f 84 f0 fc ff ff e8 65 25 a2 ff 48 83 eb 01 48 89 dd e9 ea fc ff ff e8 54 25 a2 ff 0f 0b e8 4d 25 a2 ff 0f 0b e8 46 25 a2 ff <0f> 0b e8 3f 25 a2 ff 49 8b 6c 24 08 31 ff 48 89 eb 83 e3 01 48 89
RSP: 0018:ffffc90002a57ac0 EFLAGS: 00010212
RAX: 0000000000025f74 RBX: 0000000000000001 RCX: ffffc9000c403000
RDX: 0000000000040000 RSI: ffffffff81e281aa RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888013c6c900
R13: 0000000000000002 R14: 0000000000000004 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7f7eb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7353168 CR3: 000000001d447000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	retq
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi