loop3: detected capacity change from 0 to 2048
EXT4-fs error (device loop3): ext4_map_blocks:703: inode #18: block 345: comm syz-executor.3: lblock 233 mapped to illegal pblock 345 (length 1)
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kernel BUG at fs/ext4/ext4.h:3241!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5383 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-13164-g78b421b6a7c6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:ext4_get_group_info+0x3c9/0x430 fs/ext4/ext4.h:3241
Code: ff 48 c7 c2 40 25 63 8a be 06 03 00 00 48 c7 c7 a0 25 63 8a c6 05 6b 13 35 0c 01 e8 51 99 35 ff e9 7e fd ff ff e8 17 d2 54 ff <0f> 0b e8 30 a1 a7 ff e9 8f fc ff ff e8 26 a1 a7 ff e9 c9 fc ff ff
RSP: 0018:ffffc9000525f5f8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000fffff3f1 RCX: 0000000000000000
RDX: ffff888025021dc0 RSI: ffffffff822f8bb9 RDI: 0000000000000004
RBP: ffff88806f414000 R08: 0000000000000004 R09: 0000000000000001
R10: 00000000fffff3f1 R11: 000000000000000f R12: ffff88806f412000
R13: ffff88806f412678 R14: 0000000000000001 R15: ffff888079e30d98
FS:  00007fe0d2466700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020075000 CR3: 000000006e71e000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 ext4_mb_load_buddy_gfp+0xc9/0x13c0 fs/ext4/mballoc.c:1446