------------[ cut here ]------------
WARNING: CPU: 1 PID: 4123 at arch/x86/mm/pat/memtype.c:1099 untrack_pfn+0x247/0x290 arch/x86/mm/pat/memtype.c:1099
Modules linked in:
CPU: 1 PID: 4123 Comm: syz-executor.2 Not tainted 5.18.0-rc6-next-20220516-syzkaller #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 e9 44 43 00 4c 89 ee 4c 89 e7 e8 ae dd ff ff e8 d9 44 43 00 48 85 db 0f 85 58 ff ff ff eb 82 e8 c9 44 43 00 <0f> 0b e9 76 ff ff ff 48 89 df e8 2a e7 8f 00 e9 98 fe ff ff e8 30
RSP: 0000:ffffc90005adf730 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880681c9e58 RCX: 0000000000000000
RDX: ffff8880247a3a80 RSI: ffffffff81376717 RDI: 0000000000000003
RBP: 1ffff92000b5bee6 R08: 0000000000000000 R09: 000000000000000a
R10: ffffffff813765e6 R11: 0000000000000004 R12: 00000000ffffffea
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880681c9e78
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000079cc9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 unmap_single_vma+0x1b4/0x350 mm/memory.c:1670
 unmap_vmas+0x21e/0x370 mm/memory.c:1732
 exit_mmap+0x1ec/0x740 mm/mmap.c:3220
 __mmput+0x128/0x4c0 kernel/fork.c:1180
 mmput+0x5c/0x70 kernel/fork.c:1201
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0xa18/0x2a00 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x2542/0x2600 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:307
 exc_page_fault+0xc6/0x180 arch/x86/mm/fault.c:1543
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fa9ec026d60
Code: Unable to access opcode bytes at RIP 0x7fa9ec026d36.
RSP: 002b:00007fa9ed156b38 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa9ec089132
RDX: 00007fa9ed156b40 RSI: 00007fa9ed156c70 RDI: 000000000000000b
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000008011 R11: 0000000000000206 R12: 0000000020000940
R13: 0000000020ffc000 R14: 0000000020000740 R15: 0000000020ff2000
 </TASK>