EXT4-fs error (device loop5): ext4_map_blocks:607: inode #2: block 13: comm syz-executor.5: lblock 0 mapped to illegal pblock 13 (length 1)
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kernel BUG at fs/ext4/ext4.h:3332!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 12574 Comm: syz-executor.5 Not tainted 6.3.0-syzkaller-00436-g173ea743bf7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3332
Code: 4f ff 8b 74 24 04 48 c7 c7 e0 b0 0b 8d 4c 89 f2 e8 dc 60 2e 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 77 2c 4f 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:ffffc9001662f6b0 EFLAGS: 00010293
RAX: ffffffff823b6e89 RBX: 00000000fffdbe5b RCX: ffff888026bcba80
RDX: 0000000000000000 RSI: 00000000fffdbe5b RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffff823b6b59 R09: ffffed100e854c40
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100429e0cf
R13: dffffc0000000000 R14: ffff88803697a000 R15: ffff8880214f0678
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac7f386058 CR3: 00000000408fb000 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+0x84d/0x10e0 fs/ext4/mballoc.c:5021
 ext4_release_file+0x16e/0x300 fs/ext4/file.c:166
 __fput+0x3b7/0x890 fs/file_table.c:321
 task_work_run+0x24a/0x300 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x68f/0x2290 kernel/exit.c:869
 do_group_exit+0x206/0x2c0 kernel/exit.c:1019
 get_signal+0x1701/0x17e0 kernel/signal.c:2859
 arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe97168c169
Code: Unable to access opcode bytes at 0x7fe97168c13f.
RSP: 002b:00007fe972453168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffff8b RBX: 00007fe9717ac050 RCX: 00007fe97168c169
RDX: 0000000020000140 RSI: 0000000020000180 RDI: 0000000020000080
RBP: 00007fe9716e7ca1 R08: 00000000200002c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc8f66e43f R14: 00007fe972453300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_get_group_info+0x399/0x3a0 fs/ext4/ext4.h:3332
Code: 4f ff 8b 74 24 04 48 c7 c7 e0 b0 0b 8d 4c 89 f2 e8 dc 60 2e 02 43 80 3c 2c 00 0f 85 23 fd ff ff e9 26 fd ff ff e8 77 2c 4f 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:ffffc9001662f6b0 EFLAGS: 00010293
RAX: ffffffff823b6e89 RBX: 00000000fffdbe5b RCX: ffff888026bcba80
RDX: 0000000000000000 RSI: 00000000fffdbe5b RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffff823b6b59 R09: ffffed100e854c40
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100429e0cf
R13: dffffc0000000000 R14: ffff88803697a000 R15: ffff8880214f0678
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd209cdb230 CR3: 00000000408fb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400