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.
=======================================================
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:922!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5322 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+0x40c6/0x4850 fs/ocfs2/suballoc.c:922
Code: 00 00 e9 2b f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c cc da ff ff 48 89 df e8 f5 5b 43 fe e9 bf da ff ff e8 bb bc d1 fd 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 62 dc ff ff 4c 89 f7
RSP: 0018:ffffc9000f34df20 EFLAGS: 00010287
RAX: ffffffff83f619a5 RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000000702fe RDI: 00000000000702ff
RBP: ffffc9000f34e3f0 R08: ffffffff907a427f R09: 1ffffffff20f484f
R10: dffffc0000000000 R11: fffffbfff20f4850 R12: ffff88801fc65c60
R13: ffff888044588e00 R14: dffffc0000000000 R15: fffff52001e69c10
FS:  00007fb29b9066c0(0000) GS:ffff88808c2ca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe46d55fcf0 CR3: 00000000124c7000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ocfs2_reserve_cluster_bitmap_bits fs/ocfs2/suballoc.c:1250 [inline]
 ocfs2_reserve_clusters_with_limit+0x3bc/0xc20 fs/ocfs2/suballoc.c:1295
 ocfs2_block_group_alloc fs/ocfs2/suballoc.c:790 [inline]
 ocfs2_reserve_suballoc_bits+0x797/0x4850 fs/ocfs2/suballoc.c:950
 ocfs2_reserve_new_metadata_blocks+0x415/0x9a0 fs/ocfs2/suballoc.c:1100
 ocfs2_reserve_new_metadata fs/ocfs2/suballoc.c:1143 [inline]
 ocfs2_lock_allocators+0x292/0x5f0 fs/ocfs2/suballoc.c:3109
 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2310 [inline]
 ocfs2_dio_end_io+0x513/0x13c0 fs/ocfs2/aops.c:2423
 dio_complete+0x251/0x760 fs/direct-io.c:281
 __blockdev_direct_IO+0x2ce1/0x3380 fs/direct-io.c:1296
 ocfs2_direct_IO+0x249/0x2c0 fs/ocfs2/aops.c:2460
 generic_file_direct_write+0x1d0/0x3f0 mm/filemap.c:4308
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4477
 ocfs2_file_write_iter+0x1706/0x1f10 fs/ocfs2/file.c:2481
 iter_file_splice_write+0xa31/0x1240 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+0x57b/0xcb0 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x195/0x290 fs/splice.c:1228
 do_sendfile+0x52e/0x7c0 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1432 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1418
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb29a99e159
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:00007fb29b905fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fb29ac25fa0 RCX: 00007fb29a99e159
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fb29aa35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb29ac26038 R14: 00007fb29ac25fa0 R15: 00007ffca86a7cb8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_reserve_suballoc_bits+0x40c6/0x4850 fs/ocfs2/suballoc.c:922
Code: 00 00 e9 2b f1 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c cc da ff ff 48 89 df e8 f5 5b 43 fe e9 bf da ff ff e8 bb bc d1 fd 90 <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 62 dc ff ff 4c 89 f7
RSP: 0018:ffffc9000f34df20 EFLAGS: 00010287
RAX: ffffffff83f619a5 RBX: 00000000ffffffff RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000000702fe RDI: 00000000000702ff
RBP: ffffc9000f34e3f0 R08: ffffffff907a427f R09: 1ffffffff20f484f
R10: dffffc0000000000 R11: fffffbfff20f4850 R12: ffff88801fc65c60
R13: ffff888044588e00 R14: dffffc0000000000 R15: fffff52001e69c10
FS:  00007fb29b9066c0(0000) GS:ffff88808c2ca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49de312120 CR3: 00000000124c7000 CR4: 0000000000352ef0