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kernel BUG at fs/ocfs2/suballoc.c:800!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 7321 Comm: syz.4.584 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : ocfs2_reserve_suballoc_bits+0x3258/0x3c80 fs/ocfs2/suballoc.c:800
lr : ocfs2_reserve_suballoc_bits+0x3258/0x3c80 fs/ocfs2/suballoc.c:800
sp : ffff8000222663c0
x29: ffff800022266840 x28: ffff800022266500 x27: dfff800000000000
x26: ffff0000fda0ce00 x25: 0000000000000001 x24: 000000000000ffff
x23: ffff0000c37fbc00 x22: 0000000000000800 x21: 0000000000000000
x20: 0000000000000001 x19: ffff70000444cca0 x18: 0000000000000000
x17: ffff800018349000 x16: ffff8000082eee68 x15: ffff800017e2a000
x14: 0000000000000001 x13: 1ffff0000444cbc0 x12: 0000000000080000
x11: 000000000000ce48 x10: ffff80002a4e0000 x9 : ffff800009de4014
x8 : 000000000000ce49 x7 : ffff800009d7549c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800011b02cb4
x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 ocfs2_reserve_suballoc_bits+0x3258/0x3c80 fs/ocfs2/suballoc.c:800
 ocfs2_reserve_cluster_bitmap_bits+0xcc/0x1d4 fs/ocfs2/suballoc.c:1128
 ocfs2_local_alloc_reserve_for_window fs/ocfs2/localalloc.c:1112 [inline]
 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1248 [inline]
 ocfs2_reserve_local_alloc_bits+0x6ec/0x26c8 fs/ocfs2/localalloc.c:668
 ocfs2_reserve_clusters_with_limit+0x188/0xa28 fs/ocfs2/suballoc.c:1162
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline]
 ocfs2_lock_allocators+0x270/0x530 fs/ocfs2/suballoc.c:2679
 ocfs2_write_begin_nolock+0x1d88/0x3a44 fs/ocfs2/aops.c:1740
 ocfs2_write_begin+0x1b8/0x31c fs/ocfs2/aops.c:1904
 generic_perform_write+0x234/0x4f4 mm/filemap.c:3862
 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
 ocfs2_file_write_iter+0x138c/0x1c64 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+0x3ec/0x7f0 fs/read_write.c:584
 ksys_write+0x12c/0x224 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 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: 54ff11eb 97ac0646 17fff88d 979b1caa (d4210000) 
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