EXT4-fs error (device loop0): ext4_ind_map_blocks:604: inode #19: comm syz-executor.0: Can't allocate blocks for non-extent mapped inodes with bigalloc
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kernel BUG at fs/ext4/ext4.h:3331!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4845 Comm: syz-executor.0 Not tainted 6.1.25-syzkaller-00098-g960d9828eee1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xef8/0xf10 fs/ext4/mballoc.c:1448
Code: 4e 34 c6 ff e9 de f3 ff ff e8 94 f9 7f ff 48 c7 c7 e0 fb cb 86 4c 89 ee 48 89 da e8 72 cc a8 00 e9 50 f2 ff ff e8 78 f9 7f ff <0f> 0b e8 71 f9 7f ff 0f 0b e8 6a f9 7f ff 0f 0b 0f 1f 84 00 00 00
RSP: 0018:ffffc90000b473a8 EFLAGS: 00010283
RAX: ffffffff81f4f518 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc90009195000 RSI: 00000000000161d5 RDI: 00000000000161d6
RBP: ffffc90000b47430 R08: ffffffff81f4e70c R09: ffffed10200aee1f
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000fffeabdf
R13: ffff88815f85a000 R14: ffff88814aff43c8 R15: ffff88814aff4018
FS:  00007f2659d7f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32024000 CR3: 0000000147d41000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_discard_preallocations+0x79c/0xef0 fs/ext4/mballoc.c:5021
 ext4_truncate+0x8e4/0xfb0 fs/ext4/inode.c:4271
 ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline]
 ext4_write_begin+0xa76/0xfb0 fs/ext4/inode.c:1263
 ext4_da_write_begin+0x2ff/0x920 fs/ext4/inode.c:2987
 generic_perform_write+0x2f9/0x5c0 mm/filemap.c:3765
 ext4_buffered_write_iter+0x360/0x640 fs/ext4/file.c:285
 ext4_file_write_iter+0x194/0x1cf0
 call_write_iter include/linux/fs.h:2215 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x8d1/0xe80 fs/read_write.c:584
 ksys_write+0x199/0x2c0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f265907cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2659d7f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f265919bf80 RCX: 00007f265907cae9
RDX: 000000000208e24b RSI: 0000000020000300 RDI: 0000000000000005
RBP: 00007f26590c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f265919bf80 R15: 00007ffc0b51a438
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:3331 [inline]
RIP: 0010:ext4_mb_load_buddy_gfp+0xef8/0xf10 fs/ext4/mballoc.c:1448
Code: 4e 34 c6 ff e9 de f3 ff ff e8 94 f9 7f ff 48 c7 c7 e0 fb cb 86 4c 89 ee 48 89 da e8 72 cc a8 00 e9 50 f2 ff ff e8 78 f9 7f ff <0f> 0b e8 71 f9 7f ff 0f 0b e8 6a f9 7f ff 0f 0b 0f 1f 84 00 00 00
RSP: 0018:ffffc90000b473a8 EFLAGS: 00010283
RAX: ffffffff81f4f518 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc90009195000 RSI: 00000000000161d5 RDI: 00000000000161d6
RBP: ffffc90000b47430 R08: ffffffff81f4e70c R09: ffffed10200aee1f
R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000fffeabdf
R13: ffff88815f85a000 R14: ffff88814aff43c8 R15: ffff88814aff4018
FS:  00007f2659d7f6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32024000 CR3: 0000000147d41000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400