------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1448!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 15770 Comm: syz.5.2209 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1448 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x1de0/0x1df0 fs/ocfs2/suballoc.c:2001
Code: e4 fb ff ff e8 41 a4 11 fe 90 0f 0b e8 39 a4 11 fe 90 0f 0b e8 31 a4 11 fe 90 0f 0b e8 29 a4 11 fe 90 0f 0b e8 21 a4 11 fe 90 <0f> 0b e8 19 a4 11 fe 90 0f 0b 66 0f 1f 44 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000bcf6c40 EFLAGS: 00010287
RAX: ffffffff83ae858f RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000c15a000 RSI: 00000000000005e6 RDI: 00000000000005e7
RBP: ffffc9000bcf6eb0 R08: ffffc9000bcf6f40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000002 R12: ffff888052921e00
R13: dffffc0000000000 R14: ffffc9000bcf6f40 R15: 0000000000000000
FS:  00007f1cd57026c0(0000) GS:ffff888126022000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3c67ca CR3: 000000007758c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __ocfs2_claim_clusters+0x303/0x8f0 fs/ocfs2/suballoc.c:2426
 ocfs2_local_alloc_new_window fs/ocfs2/localalloc.c:1166 [inline]
 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1295 [inline]
 ocfs2_reserve_local_alloc_bits+0x12be/0x24e0 fs/ocfs2/localalloc.c:669
 ocfs2_reserve_clusters_with_limit+0x1be/0xba0 fs/ocfs2/suballoc.c:1173
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1234 [inline]
 ocfs2_lock_allocators+0x2fa/0x5c0 fs/ocfs2/suballoc.c:2777
 ocfs2_extend_allocation+0x39b/0x17a0 fs/ocfs2/file.c:589
 ocfs2_allocate_unwritten_extents+0x2e9/0x7b0 fs/ocfs2/file.c:1496
 __ocfs2_change_file_space+0x901/0xe80 fs/ocfs2/file.c:2023
 ocfs2_fallocate+0x1f5/0x240 fs/ocfs2/file.c:2138
 vfs_fallocate+0x669/0x7e0 fs/open.c:342
 ksys_fallocate fs/open.c:366 [inline]
 __do_sys_fallocate fs/open.c:371 [inline]
 __se_sys_fallocate fs/open.c:369 [inline]
 __x64_sys_fallocate+0xc0/0x110 fs/open.c:369
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1cd478efc9
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:00007f1cd5702038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f1cd49e5fa0 RCX: 00007f1cd478efc9
RDX: 000000000000c220 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f1cd4811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1cd49e6038 R14: 00007f1cd49e5fa0 R15: 00007ffe6936ea98
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1448 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x1de0/0x1df0 fs/ocfs2/suballoc.c:2001
Code: e4 fb ff ff e8 41 a4 11 fe 90 0f 0b e8 39 a4 11 fe 90 0f 0b e8 31 a4 11 fe 90 0f 0b e8 29 a4 11 fe 90 0f 0b e8 21 a4 11 fe 90 <0f> 0b e8 19 a4 11 fe 90 0f 0b 66 0f 1f 44 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000bcf6c40 EFLAGS: 00010287
RAX: ffffffff83ae858f RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000c15a000 RSI: 00000000000005e6 RDI: 00000000000005e7
RBP: ffffc9000bcf6eb0 R08: ffffc9000bcf6f40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000002 R12: ffff888052921e00
R13: dffffc0000000000 R14: ffffc9000bcf6f40 R15: 0000000000000000
FS:  00007f1cd57026c0(0000) GS:ffff888125f22000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005568df5865f8 CR3: 000000007758c000 CR4: 00000000003526f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffeff7ff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400