ocfs2: Mounting device (7,5) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1443!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12747 Comm: syz.5.1891 Not tainted 6.16.0-rc3-next-20250627-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996
Code: c2 fb ff ff e8 35 60 19 fe 90 0f 0b e8 2d 60 19 fe 90 0f 0b e8 25 60 19 fe 90 0f 0b e8 1d 60 19 fe 90 0f 0b e8 15 60 19 fe 90 <0f> 0b e8 0d 60 19 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000bec6720 EFLAGS: 00010293
RAX: ffffffff83a6724b RBX: 0000000000000000 RCX: ffff88802c0e5a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000bec69b0 R08: ffffc9000bec6a40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880343a2208
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff11006874441
FS:  00007ff190c626c0(0000) GS:ffff888125c1e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b0f17e2d8 CR3: 000000005a234000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __ocfs2_claim_clusters+0x303/0x8f0 fs/ocfs2/suballoc.c:2421
 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:1168
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1229 [inline]
 ocfs2_lock_allocators+0x2fa/0x5c0 fs/ocfs2/suballoc.c:2772
 ocfs2_write_begin_nolock+0x2279/0x4340 fs/ocfs2/aops.c:1719
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1883
 generic_perform_write+0x2c7/0x910 mm/filemap.c:4175
 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x548/0xa90 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0x193/0x220 fs/read_write.c:798
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff18fd8e929
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:00007ff190c62038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007ff18ffb5fa0 RCX: 00007ff18fd8e929
RDX: 0000000000000001 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007ff18fe10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000709c R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff18ffb5fa0 R15: 00007ffe9b5c0fc8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996
Code: c2 fb ff ff e8 35 60 19 fe 90 0f 0b e8 2d 60 19 fe 90 0f 0b e8 25 60 19 fe 90 0f 0b e8 1d 60 19 fe 90 0f 0b e8 15 60 19 fe 90 <0f> 0b e8 0d 60 19 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000bec6720 EFLAGS: 00010293
RAX: ffffffff83a6724b RBX: 0000000000000000 RCX: ffff88802c0e5a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000bec69b0 R08: ffffc9000bec6a40 R09: 0000000000000003
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880343a2208
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff11006874441
FS:  00007ff190c626c0(0000) GS:ffff888125c1e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b0feabf98 CR3: 000000005a234000 CR4: 00000000003526f0