=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1387!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4692 Comm: syz.0.51 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1387 [inline]
pc : ocfs2_claim_suballoc_bits+0x1a34/0x1bfc fs/ocfs2/suballoc.c:1927
lr : ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1387 [inline]
lr : ocfs2_claim_suballoc_bits+0x1a34/0x1bfc fs/ocfs2/suballoc.c:1927
sp : ffff800021536560
x29: ffff8000215367a0 x28: 1fffe0001aa36aa1 x27: 1fffe0001aa36aa6
x26: ffff800021536620 x25: 0000000000000000 x24: dfff800000000000
x23: ffff7000042a6cc4 x22: 0000000000000100 x21: ffff0000d51b5530
x20: ffff0000e499be00 x19: ffff0000e499bec6 x18: ffff800011a5bd40
x17: ffff800018184000 x16: ffff8000082e9244 x15: 0000000000000000
x14: 00000000fffffffc x13: 0000000000ff0100 x12: 0000000000ff0100
x11: ff00800009dbb6d0 x10: 0000000000000000 x9 : ffff800009dbb6d0
x8 : ffff0000d9e9b780 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff800021536ad0 x4 : ffff800021536860 x3 : 0000000000000100
x2 : 0000000000000100 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1387 [inline]
 ocfs2_claim_suballoc_bits+0x1a34/0x1bfc fs/ocfs2/suballoc.c:1927
 __ocfs2_claim_clusters+0x26c/0x7b4 fs/ocfs2/suballoc.c:2338
 ocfs2_claim_clusters+0x8c/0xd4 fs/ocfs2/suballoc.c:2375
 ocfs2_local_alloc_new_window fs/ocfs2/localalloc.c:1170 [inline]
 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1299 [inline]
 ocfs2_reserve_local_alloc_bits+0x11e8/0x278c fs/ocfs2/localalloc.c:668
 ocfs2_reserve_clusters_with_limit+0x198/0x9e0 fs/ocfs2/suballoc.c:1162
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline]
 ocfs2_lock_allocators+0x27c/0x518 fs/ocfs2/suballoc.c:2669
 ocfs2_write_begin_nolock+0x1d08/0x3ab4 fs/ocfs2/aops.c:1740
 ocfs2_write_begin+0x1b4/0x30c fs/ocfs2/aops.c:1904
 generic_perform_write+0x230/0x4e4 mm/filemap.c:3862
 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
 ocfs2_file_write_iter+0x1300/0x1bf4 fs/ocfs2/file.c:2469
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x5ac/0x7c4 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __arm64_sys_pwrite64+0x170/0x200 fs/read_write.c:706
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: d4210000 979b9e8f d4210000 979b9e8d (d4210000) 
---[ end trace 0000000000000000 ]---