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: 1 UID: 0 PID: 6420 Comm: syz.0.76 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 a3 fb 74 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 bd 7f ce 07 e8 68 8d 11 fe 90 <0f> 0b e8 60 8d 11 fe 90 0f 0b e8 58 8d 11 fe 90 0f 0b e8 50 8d 11
RSP: 0018:ffffc90003c3e9c8 EFLAGS: 00010287
RAX: ffffffff83ae20a8 RBX: ffff88811851a530 RCX: 0000000000080000
RDX: ffffc90008019000 RSI: 0000000000000802 RDI: 0000000000000803
RBP: 0000000000000001 R08: ffffffff8fa39037 R09: 1ffffffff1f47206
R10: dffffc0000000000 R11: fffffbfff1f47207 R12: 1ffff92000787d6c
R13: dffffc0000000000 R14: ffff88803948d0e8 R15: ffff88803948d0e8
FS:  00007f12a88f26c0(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d13ff8 CR3: 00000001105dc000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_extend_dir+0x1172/0x4870
 ocfs2_prepare_dir_for_insert+0x3d7b/0x5450
 ocfs2_mknod+0x819/0x2050
 ocfs2_mkdir+0x191/0x440
 vfs_mkdir+0x306/0x510
 do_mkdirat+0x247/0x590
 __x64_sys_mkdirat+0x87/0xa0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12a798ebe9
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:00007f12a88f2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f12a7bc5fa0 RCX: 00007f12a798ebe9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007f12a7a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12a7bc6038 R14: 00007f12a7bc5fa0 R15: 00007fff7eccc408
 </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 a3 fb 74 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 bd 7f ce 07 e8 68 8d 11 fe 90 <0f> 0b e8 60 8d 11 fe 90 0f 0b e8 58 8d 11 fe 90 0f 0b e8 50 8d 11
RSP: 0018:ffffc90003c3e9c8 EFLAGS: 00010287
RAX: ffffffff83ae20a8 RBX: ffff88811851a530 RCX: 0000000000080000
RDX: ffffc90008019000 RSI: 0000000000000802 RDI: 0000000000000803
RBP: 0000000000000001 R08: ffffffff8fa39037 R09: 1ffffffff1f47206
R10: dffffc0000000000 R11: fffffbfff1f47207 R12: 1ffff92000787d6c
R13: dffffc0000000000 R14: ffff88803948d0e8 R15: ffff88803948d0e8
FS:  00007f12a88f26c0(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcc905ad58 CR3: 00000001105dc000 CR4: 00000000000006f0
