EXT4-fs error (device loop2): __ext4_get_inode_loc:4490: comm syz-executor.2: Invalid inode table block 0 in block_group 0
EXT4-fs error (device loop2) in ext4_reserve_inode_write:5841: Corrupt filesystem
EXT4-fs error (device loop2): __ext4_ext_dirty:202: inode #19: comm syz-executor.2: mark_inode_dirty error
------------[ cut here ]------------
kernel BUG at fs/ext4/ext4.h:3331!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 9707 Comm: syz-executor.2 Not tainted 6.1.20-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3331
Code: 4e ff 8b 74 24 04 48 c7 c7 00 dd 0b 8d 4c 89 f2 e8 0c a9 2a 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 47 ed 4e ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00
RSP: 0018:ffffc9000cf173b0 EFLAGS: 00010283
RAX: ffffffff823b73d9 RBX: 00000000fffffac6 RCX: 0000000000040000
RDX: ffffc900066d9000 RSI: 0000000000017c31 RDI: 0000000000017c32
RBP: 0000000000000001 R08: ffffffff823b70a9 R09: ffffed101178f73c
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100e4718cf
R13: dffffc0000000000 R14: ffff88802539a000 R15: ffff88807238c678
FS:  00007f0e6b3fe700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020100000 CR3: 000000001e2bc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_mb_load_buddy_gfp+0xc3/0x820 fs/ext4/mballoc.c:1448
 ext4_discard_preallocations+0x8d5/0x1230 fs/ext4/mballoc.c:5021
 ext4_truncate+0xa91/0x1470 fs/ext4/inode.c:4269
 ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline]
 ext4_write_begin+0xb36/0x1060 fs/ext4/inode.c:1262
 ext4_da_write_begin+0x4a3/0xac0 fs/ext4/inode.c:2986
 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3754
 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285
 ext4_file_write_iter+0x1d2/0x18f0
 call_write_iter include/linux/fs.h:2205 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7ae/0xba0 fs/read_write.c:584
 ksys_write+0x19c/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0e6c88c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0e6b3fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0e6c9abf80 RCX: 00007f0e6c88c0f9
RDX: 000000000208e24b RSI: 0000000020000000 RDI: 0000000000000006
RBP: 00007f0e6c8e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7afa0a7f R14: 00007f0e6b3fe300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3331
Code: 4e ff 8b 74 24 04 48 c7 c7 00 dd 0b 8d 4c 89 f2 e8 0c a9 2a 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 47 ed 4e ff <0f> 0b 0f 1f 44 00 00 55 41 57 41 56 41 54 53 48 89 fb 49 bf 00 00
RSP: 0018:ffffc9000cf173b0 EFLAGS: 00010283
RAX: ffffffff823b73d9 RBX: 00000000fffffac6 RCX: 0000000000040000
RDX: ffffc900066d9000 RSI: 0000000000017c31 RDI: 0000000000017c32
RBP: 0000000000000001 R08: ffffffff823b70a9 R09: ffffed101178f73c
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100e4718cf
R13: dffffc0000000000 R14: ffff88802539a000 R15: ffff88807238c678
FS:  00007f0e6b3fe700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020100000 CR3: 000000001e2bc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400