EXT4-fs (loop0): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 32 with error 28
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2794!
EXT4-fs (loop0): This should not happen!! Data will be lost

invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 11783 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:ext4_writepages+0x2d31/0x37f0 fs/ext4/inode.c:2794
Code: 00 fc ff df 44 89 64 24 18 48 c1 ea 03 80 3c 02 00 0f 84 25 da ff ff 48 8b 3c 24 e8 89 2d b8 ff e9 17 da ff ff e8 8f 50 82 ff <0f> 0b 4c 8b b4 24 20 01 00 00 e8 80 50 82 ff 0f b6 ac 24 50 02 00
RSP: 0018:ffff8880af8a78a8 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc90005c66000
RDX: 000000000002615e RSI: ffffffff81e034e1 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff8880556b8570 R15: 0000000000000000
FS:  00007fdeed87b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020c00000 CR3: 000000009ecbb000 CR4: 00000000003426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0xe5/0x290 mm/page-writeback.c:2344
 __filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446
 ext4_alloc_da_blocks+0x207/0x360 fs/ext4/inode.c:3273
 ext4_release_file+0x1ed/0x340 fs/ext4/file.c:89
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fdeef3090c9
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:00007fdeed87b168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffe4 RBX: 00007fdeef428f80 RCX: 00007fdeef3090c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fdeef364ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000028120001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1eb08e8f R14: 00007fdeed87b300 R15: 0000000000022000
Modules linked in:
EXT4-fs (loop0): Total free blocks count 0
EXT4-fs (loop0): Free/Dirty block details
EXT4-fs (loop0): free_blocks=2415919104
EXT4-fs (loop0): dirty_blocks=32
EXT4-fs (loop0): Block reservation details
EXT4-fs (loop0): i_reserved_data_blocks=2
FAT-fs (loop4): Unrecognized mount option "ÿÿÿÿÿÿÿÿ184467440737095516150xffffffffffffffff" or missing value
EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns
kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns
EXT4-fs error (device loop1): ext4_mb_generate_buddy:744: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters
---[ end trace e6292ba4c091c71f ]---
RIP: 0010:ext4_writepages+0x2d31/0x37f0 fs/ext4/inode.c:2794
Code: 00 fc ff df 44 89 64 24 18 48 c1 ea 03 80 3c 02 00 0f 84 25 da ff ff 48 8b 3c 24 e8 89 2d b8 ff e9 17 da ff ff e8 8f 50 82 ff <0f> 0b 4c 8b b4 24 20 01 00 00 e8 80 50 82 ff 0f b6 ac 24 50 02 00
RSP: 0018:ffff8880af8a78a8 EFLAGS: 00010212
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc90005c66000
sg_write: data in/out 3171656/726 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.4 not setting count and/or reply_len properly
RDX: 000000000002615e RSI: ffffffff81e034e1 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000001
FAT-fs (loop4): Unrecognized mount option "ÿÿÿÿÿÿÿÿ184467440737095516150xffffffffffffffff" or missing value
R13: dffffc0000000000 R14: ffff8880556b8570 R15: 0000000000000000
FS:  00007fdeed87b700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff97c86fe8 CR3: 000000009ecbb000 CR4: 00000000003426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
sg_write: data in/out 3171656/726 bytes for SCSI command 0x0-- guessing data in;
   program syz-executor.4 not setting count and/or reply_len properly
DR3: 000000000000003b DR6: 00000000fffe0ff0 DR7: 0000000000000400