EXT4-fs error (device loop3): ext4_mb_generate_buddy:1152: group 0, block bitmap and bg descriptor inconsistent: 0 vs 150994969 free clusters
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kernel BUG at fs/ext4/inode.c:2746!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 951 Comm: syz-executor300 Not tainted 5.15.173-syzkaller-00206-gf7ce2ffd2f33 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ext4_writepages+0x3fe6/0x4000 fs/ext4/inode.c:2745
Code: 89 de e8 0d 60 87 ff 45 84 f6 75 2c e8 73 5d 87 ff 49 be 00 00 00 00 00 fc ff df 4c 8b 64 24 50 e9 e4 c5 ff ff e8 5a 5d 87 ff <0f> 0b e8 53 5d 87 ff e8 da 79 17 ff eb 9b e8 47 5d 87 ff e8 ce 79
RSP: 0018:ffffc90001d07040 EFLAGS: 00010293
RAX: ffffffff81e90df6 RBX: 0000008000000000 RCX: ffff88811b978000
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90001d07450 R08: ffffffff81e90566 R09: ffffed1024b052f7
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90001d07680
R13: 0000000000000000 R14: 000000d410000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 0000000006a0f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x40e/0x670 mm/page-writeback.c:2388
 filemap_fdatawrite_wbc+0x248/0x2a0 mm/filemap.c:404
 __filemap_fdatawrite_range mm/filemap.c:437 [inline]
 __filemap_fdatawrite mm/filemap.c:443 [inline]
 filemap_flush+0x10c/0x150 mm/filemap.c:470
 ext4_alloc_da_blocks+0x77/0x1a0 fs/ext4/inode.c:3163
 ext4_release_file+0x84/0x310 fs/ext4/file.c:143
 __fput+0x228/0x8c0 fs/file_table.c:280
 ____fput+0x15/0x20 fs/file_table.c:308
 task_work_run+0x129/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xc48/0x2ca0 kernel/exit.c:880
 do_group_exit+0x141/0x310 kernel/exit.c:1002
 get_signal+0x7a3/0x1630 kernel/signal.c:2907
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 exc_page_fault+0x47a/0x7f0 arch/x86/mm/fault.c:1568
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7fb083948f9d
Code: Unable to access opcode bytes at RIP 0x7fb083948f73.
RSP: 002b:00007fb08390ca70 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000030 RSI: 00007fb0839c606b RDI: 0000000020000380
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 00007fb0839c606b
R13: 0000000000000002 R14: 00007fb08390d000 R15: 00007fb08390d140
 </TASK>
Modules linked in:
---[ end trace ca6b75ba42047f82 ]---
RIP: 0010:ext4_writepages+0x3fe6/0x4000 fs/ext4/inode.c:2745
Code: 89 de e8 0d 60 87 ff 45 84 f6 75 2c e8 73 5d 87 ff 49 be 00 00 00 00 00 fc ff df 4c 8b 64 24 50 e9 e4 c5 ff ff e8 5a 5d 87 ff <0f> 0b e8 53 5d 87 ff e8 da 79 17 ff eb 9b e8 47 5d 87 ff e8 ce 79
RSP: 0018:ffffc90001d07040 EFLAGS: 00010293
RAX: ffffffff81e90df6 RBX: 0000008000000000 RCX: ffff88811b978000
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90001d07450 R08: ffffffff81e90566 R09: ffffed1024b052f7
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90001d07680
R13: 0000000000000000 R14: 000000d410000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb08390dd58 CR3: 000000011975b000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400