------------[ cut here ]------------
WARNING: CPU: 0 PID: 13461 at arch/x86/mm/pat/memtype.c:1060 untrack_pfn+0x24b/0x290 arch/x86/mm/pat/memtype.c:1060
Modules linked in:
CPU: 0 PID: 13461 Comm: syz-executor.0 Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:untrack_pfn+0x24b/0x290 arch/x86/mm/pat/memtype.c:1060
Code: 85 6c ff ff ff e8 b5 fb 46 00 4c 89 ee 4c 89 e7 e8 1a e2 ff ff e8 a5 fb 46 00 48 85 db 0f 85 58 ff ff ff eb 82 e8 95 fb 46 00 <0f> 0b e9 76 ff ff ff 48 89 df e8 36 03 95 00 e9 98 fe ff ff e8 fc
RSP: 0018:ffffc9000624f748 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff8880270658c0 RCX: ffffc9000d2c0000
RDX: 0000000000040000 RSI: ffffffff813a56ab RDI: 0000000000000005
RBP: 1ffff92000c49ee9 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffea R11: 0000000000000000 R12: 00000000ffffffea
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880270658e0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0063) knlGS:00000000f7f77b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000032c27000 CR3: 000000007b40f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unmap_single_vma+0x1b4/0x2a0 mm/memory.c:1624
 unmap_vmas+0x226/0x370 mm/memory.c:1685
 exit_mmap+0x18d/0x7b0 mm/mmap.c:3085
 __mmput+0x128/0x4c0 kernel/fork.c:1207
 mmput+0x60/0x70 kernel/fork.c:1229
 dup_mm kernel/fork.c:1564 [inline]
 copy_mm kernel/fork.c:1597 [inline]
 copy_process+0x4623/0x7520 kernel/fork.c:2266
 kernel_clone+0xeb/0x990 kernel/fork.c:2681
 __do_compat_sys_ia32_clone+0x9e/0xd0 arch/x86/kernel/sys_ia32.c:254
 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: 0023:0xf7f7c549
Code: 03 74 c0 01 10 05 03 74 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 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:00000000f7f7757c EFLAGS: 00000246 ORIG_RAX: 0000000000000078
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000020000200 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 74 c0 01          	add    0x1(%rax,%rax,8),%esi
   4:	10 05 03 74 b8 01    	adc    %al,0x1b87403(%rip)        # 0x1b8740d
   a:	10 06                	adc    %al,(%rsi)
   c:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
  10:	10 07                	adc    %al,(%rdi)
  12:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
  16:	10 08                	adc    %cl,(%rax)
  18:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1c:	00 00                	add    %al,(%rax)
  1e:	00 00                	add    %al,(%rax)
  20:	00 51 52             	add    %dl,0x52(%rcx)
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	retq
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  39:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi