EXT4-fs error (device loop1): ext4_map_blocks:617: inode #3: block 41: comm syz.1.2991: lblock 1 mapped to illegal pblock 41 (length 1)
EXT4-fs error (device loop1): ext4_map_blocks:617: inode #4: block 12: comm syz.1.2991: lblock 1 mapped to illegal pblock 12 (length 1)
EXT4-fs error (device loop1): __ext4_get_inode_loc:4710: comm syz.1.2991: Invalid inode table block 1298143203 in block_group 0
EXT4-fs error (device loop1) in ext4_reserve_inode_write:6099: Corrupt filesystem
------------[ cut here ]------------
kernel BUG at fs/ext4/ext4.h:2984!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12178 Comm: syz.1.2991 Not tainted 5.4.274-syzkaller-00003-g51e9abf68baf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2984 [inline]
RIP: 0010:ext4_mb_find_by_goal+0xba1/0xbe0 fs/ext4/mballoc.c:1830
Code: fc ff ff 48 8b 4c 24 28 80 e1 07 80 c1 03 38 c1 0f 8c 22 fc ff ff 48 8b 7c 24 28 e8 99 74 c8 ff e9 13 fc ff ff e8 8f 8f 98 ff <0f> 0b e8 d8 44 6f ff e8 83 8f 98 ff 0f 0b e8 7c 8f 98 ff 0f 0b e8
RSP: 0018:ffff8881e6a4eb60 EFLAGS: 00010283
RAX: ffffffff81cbac91 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc90001548000 RSI: 000000000003becf RDI: 000000000003bed0
RBP: ffff8881e6a4ec70 R08: ffffffff81cba211 R09: ffffed103b120be9
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881d24123f0 R14: 0000000000000001 R15: 1ffff1103a48247e
FS:  00007f23cd6e56c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23c52e3000 CR3: 00000001e3f2e000 CR4: 00000000003426b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_mb_regular_allocator+0x229/0x10d0 fs/ext4/mballoc.c:2132
 ext4_mb_new_blocks+0x59a/0x2d10 fs/ext4/mballoc.c:4604
 ext4_ext_map_blocks+0x1e70/0x7450 fs/ext4/extents.c:4511
 ext4_map_blocks+0xa2f/0x1ba0 fs/ext4/inode.c:661
 _ext4_get_block+0x21b/0x610 fs/ext4/inode.c:802
 ext4_block_write_begin+0x68a/0x1390 fs/ext4/inode.c:1213
 ext4_write_begin+0x5ba/0x1900 fs/ext4/inode.c:1351
 generic_perform_write+0x2c7/0x560 mm/filemap.c:3450
 __generic_file_write_iter+0x224/0x530 mm/filemap.c:3579
 ext4_file_write_iter+0x499/0x10e0 fs/ext4/file.c:270
 call_write_iter include/linux/fs.h:1989 [inline]
 new_sync_write fs/read_write.c:483 [inline]
 __vfs_write+0x5d3/0x750 fs/read_write.c:496
 vfs_write+0x206/0x4e0 fs/read_write.c:558
 ksys_write+0x199/0x2c0 fs/read_write.c:611
 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f23ce463b99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f23cd6e5048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f23ce5f1fa0 RCX: 00007f23ce463b99
RDX: 000000000000fecc RSI: 0000000020000140 RDI: 000000000000000a
RBP: 00007f23ce4e477e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f23ce5f1fa0 R15: 00007fff4c8be1b8
Modules linked in: