(syz.0.0,5325,0):ocfs2_start_trans:376 ERROR: status = -30
OCFS2: abort (device loop0): handle_t *ocfs2_start_trans(struct ocfs2_super *, int): Detected aborted journal
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
OCFS2: File system is now read-only.
(syz.0.0,5325,0):ocfs2_add_refcount_flag:3688 ERROR: status = -30
(syz.0.0,5325,0):ocfs2_reflink_remap_extent:4560 ERROR: status = -30
(syz.0.0,5325,0):ocfs2_reflink_remap_blocks:4684 ERROR: status = -30
(syz.0.0,5325,0):ocfs2_remap_file_range:2754 ERROR: status = -30
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:900!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ocfs2_reserve_suballoc_bits+0x40b5/0x4840 fs/ocfs2/suballoc.c:900
Code: 24 78 e9 23 f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 9d da ff ff 48 89 df e8 f6 99 64 fe e9 90 da ff ff e8 1c b5 f7 fd 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 3a dc ff ff 4c 89 f7
RSP: 0018:ffffc9000f606500 EFLAGS: 00010283
RAX: ffffffff83ce10f4 RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000f6b9000 RSI: 000000000003af49 RDI: 000000000003af4a
RBP: ffffc9000f6069d0 R08: ffffffff903047f7 R09: 1ffffffff20608fe
R10: dffffc0000000000 R11: fffffbfff20608ff R12: ffff88804763dc60
R13: ffff8880423eee00 R14: dffffc0000000000 R15: fffff52001ec0ccc
FS:  00007f3536bf16c0(0000) GS:ffff88808c893000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4e036c000 CR3: 0000000040d6d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1228 [inline]
 ocfs2_reserve_clusters_with_limit+0x3bc/0xc20 fs/ocfs2/suballoc.c:1273
 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1323 [inline]
 ocfs2_lock_allocators+0x2d8/0x600 fs/ocfs2/suballoc.c:3098
 ocfs2_write_begin_nolock+0x1b2a/0x41a0 fs/ocfs2/aops.c:1720
 ocfs2_write_begin+0x1c5/0x320 fs/ocfs2/aops.c:1885
 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4325
 ocfs2_file_write_iter+0x1663/0x1e70 fs/ocfs2/file.c:2476
 iter_file_splice_write+0x9a1/0x10f0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x53a/0xc70 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 vfs_copy_file_range+0xb02/0x1370 fs/read_write.c:1634
 __do_sys_copy_file_range fs/read_write.c:1683 [inline]
 __se_sys_copy_file_range+0x2fb/0x480 fs/read_write.c:1650
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3535d9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3536bf0fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f3536016090 RCX: 00007f3535d9ce59
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f3535e32d6f R08: 0000020000000008 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3536016128 R14: 00007f3536016090 R15: 00007ffeaa44ae18
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_reserve_suballoc_bits+0x40b5/0x4840 fs/ocfs2/suballoc.c:900
Code: 24 78 e9 23 f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 9d da ff ff 48 89 df e8 f6 99 64 fe e9 90 da ff ff e8 1c b5 f7 fd 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 3a dc ff ff 4c 89 f7
RSP: 0018:ffffc9000f606500 EFLAGS: 00010283
RAX: ffffffff83ce10f4 RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc9000f6b9000 RSI: 000000000003af49 RDI: 000000000003af4a
RBP: ffffc9000f6069d0 R08: ffffffff903047f7 R09: 1ffffffff20608fe
R10: dffffc0000000000 R11: fffffbfff20608ff R12: ffff88804763dc60
R13: ffff8880423eee00 R14: dffffc0000000000 R15: fffff52001ec0ccc
FS:  00007f3536bf16c0(0000) GS:ffff88808c893000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4e036c000 CR3: 0000000040d6d000 CR4: 0000000000352ef0