EXT4-fs error (device loop1): ext4_mb_generate_buddy:748: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters
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kernel BUG at fs/ext4/inode.c:2844!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 636 Comm: syz-executor.1 Not tainted 5.4.268-syzkaller-00003-g2d5d8240a7cb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: d1 9b ff 31 ff 89 de e8 78 d1 9b ff 45 84 f6 75 2e e8 5e cf 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 4a cf 9b ff <0f> 0b e8 43 cf 9b ff 0f 0b e8 3c cf 9b ff e8 57 dc 37 ff eb 99 e8
RSP: 0018:ffff8881e915f7c0 EFLAGS: 00010293
RAX: ffffffff81c877d6 RBX: 0000010000000000 RCX: ffff8881e9becec0
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881e915fbb0 R08: ffffffff81c84426 R09: ffffed1039d8167d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881cec0b490
R13: 0000000000000001 R14: 0000019410000000 R15: dffffc0000000000
FS:  0000555556806480(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200037b8 CR3: 00000001ea5f1000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0x12b/0x270 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x33c/0x3f0 mm/filemap.c:421
 ext4_release_file+0x7d/0x300 fs/ext4/file.c:89
 __fput+0x262/0x680 fs/file_table.c:281
 task_work_run+0x140/0x170 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x190/0x1a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode+0x199/0x200 arch/x86/entry/common.c:194
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Modules linked in:
---[ end trace a6b5fefc5675827d ]---
RIP: 0010:ext4_writepages+0x3c96/0x3cc0 fs/ext4/inode.c:2843
Code: d1 9b ff 31 ff 89 de e8 78 d1 9b ff 45 84 f6 75 2e e8 5e cf 9b ff 49 bf 00 00 00 00 00 fc ff df e9 1d f9 ff ff e8 4a cf 9b ff <0f> 0b e8 43 cf 9b ff 0f 0b e8 3c cf 9b ff e8 57 dc 37 ff eb 99 e8
RSP: 0018:ffff8881e915f7c0 EFLAGS: 00010293
RAX: ffffffff81c877d6 RBX: 0000010000000000 RCX: ffff8881e9becec0
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881e915fbb0 R08: ffffffff81c84426 R09: ffffed1039d8167d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881cec0b490
R13: 0000000000000001 R14: 0000019410000000 R15: dffffc0000000000
FS:  0000555556806480(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200037b8 CR3: 00000001ea5f1000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400