------------[ cut here ]------------
WARNING: CPU: 0 PID: 16249 at arch/x86/mm/pat/memtype.c:1099 untrack_pfn+0x247/0x290 arch/x86/mm/pat/memtype.c:1099
Modules linked in:
CPU: 0 PID: 16249 Comm: syz-executor.3 Not tainted 5.18.0-syzkaller-11338-g2c5ca23f7414 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:untrack_pfn+0x247/0x290 arch/x86/mm/pat/memtype.c:1099
Code: 84 6c ff ff ff e8 89 3a 43 00 4c 89 ee 4c 89 e7 e8 ae dd ff ff e8 79 3a 43 00 48 85 db 0f 85 58 ff ff ff eb 82 e8 69 3a 43 00 <0f> 0b e9 76 ff ff ff 48 89 df e8 8a fa 8f 00 e9 98 fe ff ff e8 c0
RSP: 0018:ffffc9000a0e76f8 EFLAGS: 00010212
RAX: 0000000000000ab6 RBX: ffff88801e80a630 RCX: ffffc900061a4000
RDX: 0000000000040000 RSI: ffffffff81373737 RDI: 0000000000000005
RBP: 1ffff9200141cedf R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffea R11: 0000000000000001 R12: 00000000ffffffea
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88801e80a680
FS:  00007f94ff1c6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f94ff1c5ff8 CR3: 00000000203d4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unmap_single_vma+0x1ba/0x360 mm/memory.c:1662
 unmap_vmas+0x18c/0x310 mm/memory.c:1723
 exit_mmap+0x1c4/0x4a0 mm/mmap.c:3162
 __mmput+0x122/0x4b0 kernel/fork.c:1187
 mmput+0x56/0x60 kernel/fork.c:1208
 dup_mm+0xd73/0x1390 kernel/fork.c:1540
 copy_mm kernel/fork.c:1576 [inline]
 copy_process+0x3b1c/0x6ff0 kernel/fork.c:2237
 kernel_clone+0xe7/0xab0 kernel/fork.c:2642
 __do_sys_clone+0xc8/0x110 kernel/fork.c:2759
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f94fe089109
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f94ff1c6118 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f94fe19bf60 RCX: 00007f94fe089109
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f94ff1c61d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f94fe6cfb1f R14: 00007f94ff1c6300 R15: 0000000000022000
 </TASK>