loop5: detected capacity change from 0 to 32768
ocfs2: Slot 0 on device (7,5) was already allocated to this node!
ocfs2: Mounting device (7,5) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/uptodate.c:509!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 9169 Comm: syz.5.392 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170
Code: 80 3c 20 00 74 08 4c 89 f7 e8 e3 b2 72 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 ed 2f cf 07 e8 28 11 0d fe 90 <0f> 0b e8 20 11 0d fe 90 0f 0b e8 18 11 0d fe 90 0f 0b e8 10 11 0d
RSP: 0018:ffffc900076e7a08 EFLAGS: 00010287
RAX: ffffffff83b349f8 RBX: ffff888122882530 RCX: 0000000000080000
RDX: ffffc90003cc2000 RSI: 0000000000000647 RDI: 0000000000000648
RBP: 0000000000000001 R08: ffffffff8fc35777 R09: 1ffffffff1f86aee
R10: dffffc0000000000 R11: fffffbfff1f86aef R12: ffffc900076e7d50
R13: ffff888039050878 R14: ffff888122812d98 R15: dffffc0000000000
FS:  00007f8edacfa6c0(0000) GS:ffff8880b83fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f707ff8 CR3: 0000000032344000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_group_add+0x317/0x1240
 ocfs2_ioctl+0x609/0x750
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ed9d8ec29
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:00007f8edacfa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8ed9fd5fa0 RCX: 00007f8ed9d8ec29
RDX: 00002000000000c0 RSI: 0000000040186f02 RDI: 0000000000000004
RBP: 00007f8ed9e11e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ed9fd6038 R14: 00007f8ed9fd5fa0 R15: 00007ffd83ec1698
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170
Code: 80 3c 20 00 74 08 4c 89 f7 e8 e3 b2 72 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 ed 2f cf 07 e8 28 11 0d fe 90 <0f> 0b e8 20 11 0d fe 90 0f 0b e8 18 11 0d fe 90 0f 0b e8 10 11 0d
RSP: 0018:ffffc900076e7a08 EFLAGS: 00010287
RAX: ffffffff83b349f8 RBX: ffff888122882530 RCX: 0000000000080000
RDX: ffffc90003cc2000 RSI: 0000000000000647 RDI: 0000000000000648
RBP: 0000000000000001 R08: ffffffff8fc35777 R09: 1ffffffff1f86aee
R10: dffffc0000000000 R11: fffffbfff1f86aef R12: ffffc900076e7d50
R13: ffff888039050878 R14: ffff888122812d98 R15: dffffc0000000000
FS:  00007f8edacfa6c0(0000) GS:ffff8880b83fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b330f4ff8 CR3: 0000000032344000 CR4: 00000000000006f0
