------------[ cut here ]------------
kernel BUG at mm/page_table_check.c:157!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 23462 Comm: syz.0.2044 Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__page_table_check_zero+0x274/0x350 mm/page_table_check.c:157
Code: c1 0f 8c 39 fe ff ff 48 89 df e8 77 26 f3 ff e9 2c fe ff ff e8 9d 60 89 ff 90 0f 0b e8 95 60 89 ff 90 0f 0b e8 8d 60 89 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 55 65 89
RSP: 0018:ffffc90010bdf6c0 EFLAGS: 00010293
RAX: ffffffff820b79d3 RBX: dffffc0000000000 RCX: ffff8880263b3c00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801e97c04c
RBP: ffff88801e97c04c R08: ffff88801e97c04f R09: 1ffff11003d2f809
R10: dffffc0000000000 R11: ffffed1003d2f80a R12: ffff88801e97c000
R13: 1ffffffff34889bc R14: 000000000000000a R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0063) knlGS:00000000f5705b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000055a8dece3950 CR3: 00000000118e8000 CR4: 00000000003526f0
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:41 [inline]
 free_pages_prepare mm/page_alloc.c:1109 [inline]
 __free_pages_ok+0xab0/0xc80 mm/page_alloc.c:1250
 dec_usb_memory_use_count+0x259/0x350 drivers/usb/core/devio.c:198
 mmap_region+0x2073/0x2940 mm/mmap.c:1577
 do_mmap+0x8f0/0x1000 mm/mmap.c:496
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fa6579
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 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f570555c EFLAGS: 00000206 ORIG_RAX: 00000000000000c0
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000400000
RDX: 000000000000000f RSI: 0000000000011012 RDI: 0000000000000006
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__page_table_check_zero+0x274/0x350 mm/page_table_check.c:157
Code: c1 0f 8c 39 fe ff ff 48 89 df e8 77 26 f3 ff e9 2c fe ff ff e8 9d 60 89 ff 90 0f 0b e8 95 60 89 ff 90 0f 0b e8 8d 60 89 ff 90 <0f> 0b f3 0f 1e fa 4c 89 f6 48 81 e6 ff 0f 00 00 31 ff e8 55 65 89
RSP: 0018:ffffc90010bdf6c0 EFLAGS: 00010293
RAX: ffffffff820b79d3 RBX: dffffc0000000000 RCX: ffff8880263b3c00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801e97c04c
RBP: ffff88801e97c04c R08: ffff88801e97c04f R09: 1ffff11003d2f809
R10: dffffc0000000000 R11: ffffed1003d2f80a R12: ffff88801e97c000
R13: 1ffffffff34889bc R14: 000000000000000a R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8700000(0063) knlGS:00000000f5705b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007ffffcd157c8 CR3: 00000000118e8000 CR4: 00000000003526f0
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                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop