EXT4-fs error (device loop5): ext4_map_blocks:579: inode #12: block 80: comm syz-executor.5: lblock 0 mapped to illegal pblock 80 (length 1)
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kernel BUG at fs/ext4/ext4.h:3241!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13260 Comm: syz-executor.5 Not tainted 6.4.0-rc1-syzkaller-00001-gba0ad6ed89fd #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 00 20 63 8a be 06 03 00 00 48 c7 c7 60 20 63 8a c6 05 8b 42 35 0c 01 e8 31 b7 35 ff e9 7e fd ff ff e8 47 ea 54 ff <0f> 0b e8 f0 af a7 ff e9 8f fc ff ff e8 e6 af a7 ff e9 c9 fc ff ff
RSP: 0018:ffffc9000b5378b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000ffffebac RCX: 0000000000000000
RDX: ffff88801f07bb80 RSI: ffffffff822f5a99 RDI: 0000000000000004
RBP: ffff888040a8e000 R08: 0000000000000004 R09: 0000000000000001
R10: 00000000ffffebac R11: 0000000000000000 R12: ffff888040a8c000
R13: ffff888040a8c678 R14: 0000000000000001 R15: ffff888074839cb0
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8a3fa04000 CR3: 0000000030401000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 ext4_mb_load_buddy_gfp+0xc9/0x13c0 fs/ext4/mballoc.c:1446
 ext4_discard_preallocations+0x521/0xf60 fs/ext4/mballoc.c:5226
 ext4_release_file+0x2ee/0x370 fs/ext4/file.c:166
 __fput+0x27c/0xa90 fs/file_table.c:321
 task_work_run+0x16f/0x270 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xad3/0x2960 kernel/exit.c:871
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1021
 get_signal+0x2315/0x25b0 kernel/signal.c:2874
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb4a408c169
Code: Unable to access opcode bytes at 0x7fb4a408c13f.
RSP: 002b:00007fb4a4dab218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fb4a41abf88 RCX: 00007fb4a408c169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb4a41abf88
RBP: 00007fb4a41abf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb4a41abf8c
R13: 00007ffea9374adf R14: 00007fb4a4dab300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_get_group_info+0x3c9/0x430 fs/ext4/ext4.h:3241
Code: ff 48 c7 c2 00 20 63 8a be 06 03 00 00 48 c7 c7 60 20 63 8a c6 05 8b 42 35 0c 01 e8 31 b7 35 ff e9 7e fd ff ff e8 47 ea 54 ff <0f> 0b e8 f0 af a7 ff e9 8f fc ff ff e8 e6 af a7 ff e9 c9 fc ff ff
RSP: 0018:ffffc9000b5378b0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000ffffebac RCX: 0000000000000000
RDX: ffff88801f07bb80 RSI: ffffffff822f5a99 RDI: 0000000000000004
RBP: ffff888040a8e000 R08: 0000000000000004 R09: 0000000000000001
R10: 00000000ffffebac R11: 0000000000000000 R12: ffff888040a8c000
R13: ffff888040a8c678 R14: 0000000000000001 R15: ffff888074839cb0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f01fc4d56be CR3: 000000007aa01000 CR4: 0000000000350ef0