EXT4-fs error (device loop0): ext4_mb_generate_buddy:1220: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters
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WARNING: CPU: 0 PID: 6348 at fs/ext4/inode.c:3930 ext4_dirty_folio+0x172/0x1b0 fs/ext4/inode.c:3930
Modules linked in:
CPU: 0 UID: 0 PID: 6348 Comm: syz.0.66 Not tainted 6.16.0-rc3-syzkaller-00042-g78f4e737a53e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ext4_dirty_folio+0x172/0x1b0 fs/ext4/inode.c:3930
Code: f4 34 4d ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7f d0 d0 ff e8 da 34 4d ff 90 0f 0b 90 eb e0 e8 cf 34 4d ff 90 <0f> 0b 90 eb a7 e8 c4 34 4d ff 48 89 df 48 c7 c6 00 63 9e 8b e8 a5
RSP: 0018:ffffc9000bdb7368 EFLAGS: 00010293
RAX: ffffffff82731751 RBX: ffffea000048d580 RCX: ffff888021725a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffffd4000091ab0 R08: ffffea000048d587 R09: 1ffffd4000091ab0
R10: dffffc0000000000 R11: fffff94000091ab1 R12: ffff888059a72168
R13: 1ffffd4000091ab1 R14: 0000000000000000 R15: ffffea000048d588
FS:  0000000000000000(0000) GS:ffff888125c83000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2e21070f40 CR3: 000000000df38000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 zap_present_folio_ptes mm/memory.c:1507 [inline]
 zap_present_ptes mm/memory.c:1590 [inline]
 do_zap_pte_range mm/memory.c:1691 [inline]
 zap_pte_range mm/memory.c:1735 [inline]
 zap_pmd_range mm/memory.c:1827 [inline]
 zap_pud_range mm/memory.c:1856 [inline]
 zap_p4d_range mm/memory.c:1877 [inline]
 unmap_page_range+0x16f2/0x41c0 mm/memory.c:1898
 unmap_single_vma mm/memory.c:1941 [inline]
 unmap_vmas+0x399/0x580 mm/memory.c:1985
 exit_mmap+0x248/0xb50 mm/mmap.c:1284
 __mmput+0x118/0x420 kernel/fork.c:1121
 exit_mm+0x1da/0x2c0 kernel/exit.c:581
 do_exit+0x648/0x22e0 kernel/exit.c:952
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1105
 get_signal+0x125e/0x1310 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2e2018e929
Code: Unable to access opcode bytes at 0x7f2e2018e8ff.
RSP: 002b:00007f2e210720e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f2e203b5fa8 RCX: 00007f2e2018e929
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2e203b5fa8
RBP: 00007f2e203b5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2e203b5fac
R13: 0000000000000000 R14: 00007ffc066f8ab0 R15: 00007ffc066f8b98
 </TASK>