loop0: detected capacity change from 0 to 32768
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:804!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5324 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ocfs2_reserve_suballoc_bits+0x479b/0x4eb0 fs/ocfs2/suballoc.c:804
Code: e1 07 80 c1 03 38 c1 0f 8c 75 dd ff ff 48 8d bc 24 b0 01 00 00 e8 35 b6 68 fe e9 63 dd ff ff e8 bb 4b 31 08 e8 66 ef fe fd 90 <0f> 0b e8 5e ef fe fd 48 c7 c7 20 ad e3 8e 48 8b 74 24 28 48 89 da
RSP: 0018:ffffc9000d3cdac0 EFLAGS: 00010246
RAX: ffffffff8395eafa RBX: 00000000ffffffff RCX: 0000000000040000
RDX: ffffc9000d7c9000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000d3cdfb0 R08: ffffffff8395a5d5 R09: 1ffffffff203a11d
R10: dffffc0000000000 R11: fffffbfff203a11e R12: 1ffff92001a79bd8
R13: ffff88803f5d5400 R14: ffff88801fbd6e00 R15: dffffc0000000000
FS:  00007fbb211756c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb160c1000 CR3: 00000000401b4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_reserve_cluster_bitmap_bits+0xc5/0x1d0 fs/ocfs2/suballoc.c:1132
 ocfs2_local_alloc_reserve_for_window fs/ocfs2/localalloc.c:1125 [inline]
 ocfs2_local_alloc_slide_window fs/ocfs2/localalloc.c:1261 [inline]
 ocfs2_reserve_local_alloc_bits+0x95e/0x2870 fs/ocfs2/localalloc.c:669
 ocfs2_reserve_clusters_with_limit+0x1b8/0xb60 fs/ocfs2/suballoc.c:1166
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1227 [inline]
 ocfs2_lock_allocators+0x30a/0x630 fs/ocfs2/suballoc.c:2746
 ocfs2_write_begin_nolock+0x26f2/0x4ec0 fs/ocfs2/aops.c:1738
 ocfs2_dio_wr_get_block+0xc3b/0x18d0 fs/ocfs2/aops.c:2237
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x1c8e/0x4890 fs/direct-io.c:1243
 ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2464
 generic_file_direct_write+0x17a/0x390 mm/filemap.c:3977
 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4141
 ocfs2_file_write_iter+0x17b1/0x1f50 fs/ocfs2/file.c:2467
 iter_file_splice_write+0xbfa/0x1510 fs/splice.c:743
 do_splice_from fs/splice.c:941 [inline]
 direct_splice_actor+0x11b/0x220 fs/splice.c:1164
 splice_direct_to_actor+0x586/0xc80 fs/splice.c:1108
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0x289/0x3e0 fs/splice.c:1233
 do_sendfile+0x561/0xe10 fs/read_write.c:1388
 __do_sys_sendfile64 fs/read_write.c:1455 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1441
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbb2037e719
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:00007fbb21175038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fbb20535f80 RCX: 00007fbb2037e719
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007fbb203f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbb20535f80 R15: 00007ffebf63e418
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_reserve_suballoc_bits+0x479b/0x4eb0 fs/ocfs2/suballoc.c:804
Code: e1 07 80 c1 03 38 c1 0f 8c 75 dd ff ff 48 8d bc 24 b0 01 00 00 e8 35 b6 68 fe e9 63 dd ff ff e8 bb 4b 31 08 e8 66 ef fe fd 90 <0f> 0b e8 5e ef fe fd 48 c7 c7 20 ad e3 8e 48 8b 74 24 28 48 89 da
RSP: 0018:ffffc9000d3cdac0 EFLAGS: 00010246
RAX: ffffffff8395eafa RBX: 00000000ffffffff RCX: 0000000000040000
RDX: ffffc9000d7c9000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000d3cdfb0 R08: ffffffff8395a5d5 R09: 1ffffffff203a11d
R10: dffffc0000000000 R11: fffffbfff203a11e R12: 1ffff92001a79bd8
R13: ffff88803f5d5400 R14: ffff88801fbd6e00 R15: dffffc0000000000
FS:  00007fbb211756c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb161ff000 CR3: 00000000401b4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400