BUG: Bad page map in process syz-executor.1  pte:ffff8881a0f971c0 pmd:185877067
addr:00007f30d4039000 vm_flags:00000871 anon_vma:0000000000000000 mapping:ffff8881e9148cd0 index:f9
file:syz-executor.1 fault:ext4_filemap_fault mmap:ext4_file_mmap readpage:ext4_readpage
CPU: 1 PID: 19945 Comm: syz-executor.1 Not tainted 5.4.242-syzkaller-00017-g487daef44f9f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x241 lib/dump_stack.c:118
 print_bad_pte+0x511/0x530 mm/memory.c:559
 vm_normal_page+0x135/0x1d0 mm/memory.c:648
 zap_pte_range mm/memory.c:1077 [inline]
 zap_pmd_range mm/memory.c:1221 [inline]
 zap_pud_range mm/memory.c:1250 [inline]
 zap_p4d_range mm/memory.c:1271 [inline]
 unmap_page_range+0xc00/0x2620 mm/memory.c:1292
 unmap_single_vma mm/memory.c:1337 [inline]
 unmap_vmas+0x355/0x4b0 mm/memory.c:1369
 exit_mmap+0x2bc/0x520 mm/mmap.c:3186
 __mmput+0x8e/0x2c0 kernel/fork.c:1093
 exit_mm kernel/exit.c:536 [inline]
 do_exit+0xc08/0x2bc0 kernel/exit.c:846
 do_group_exit+0x138/0x300 kernel/exit.c:982
 __do_sys_exit_group kernel/exit.c:993 [inline]
 __se_sys_exit_group kernel/exit.c:991 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:991
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1