loop0: detected capacity change from 0 to 32768
ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback 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: 8960 Comm: syz.0.363 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 73 b9 74 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 9d bf ce 07 e8 e8 3b 11 fe 90 <0f> 0b e8 e0 3b 11 fe 90 0f 0b e8 d8 3b 11 fe 90 0f 0b e8 d0 3b 11
RSP: 0018:ffffc9000325fa28 EFLAGS: 00010287
RAX: ffffffff83ae71a8 RBX: ffff888124cc6db0 RCX: 0000000000080000
RDX: ffffc90008069000 RSI: 000000000000043b RDI: 000000000000043c
RBP: 0000000000000001 R08: ffffffff8fa3a737 R09: 1ffffffff1f474e6
R10: dffffc0000000000 R11: fffffbfff1f474e7 R12: ffffc9000325fd70
R13: ffff888124c933f8 R14: ffff88811274f828 R15: dffffc0000000000
FS:  00007f40ed5446c0(0000) GS:ffff8880b8612000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f03b2ef2d50 CR3: 00000001115c0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_group_add+0x317/0x1240
 ocfs2_ioctl+0x609/0x750
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40ec78ec29
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:00007f40ed544038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f40ec9d5fa0 RCX: 00007f40ec78ec29
RDX: 0000200000000000 RSI: 0000000040186f02 RDI: 0000000000000004
RBP: 00007f40ec811e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f40ec9d6038 R14: 00007f40ec9d5fa0 R15: 00007ffd5e271968
 </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 73 b9 74 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 9d bf ce 07 e8 e8 3b 11 fe 90 <0f> 0b e8 e0 3b 11 fe 90 0f 0b e8 d8 3b 11 fe 90 0f 0b e8 d0 3b 11
RSP: 0018:ffffc9000325fa28 EFLAGS: 00010287
RAX: ffffffff83ae71a8 RBX: ffff888124cc6db0 RCX: 0000000000080000
RDX: ffffc90008069000 RSI: 000000000000043b RDI: 000000000000043c
RBP: 0000000000000001 R08: ffffffff8fa3a737 R09: 1ffffffff1f474e6
R10: dffffc0000000000 R11: fffffbfff1f474e7 R12: ffffc9000325fd70
R13: ffff888124c933f8 R14: ffff88811274f828 R15: dffffc0000000000
FS:  00007f40ed5446c0(0000) GS:ffff8880b8612000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa768d035c0 CR3: 00000001115c0000 CR4: 00000000000006f0
