loop6: detected capacity change from 0 to 32768
ocfs2: Mounting device (7,6) 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: 8515 Comm: syz.6.268 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:ffffc9000318eac8 EFLAGS: 00010287
RAX: ffffffff83ae71a8 RBX: ffff8881220896b0 RCX: 0000000000080000
RDX: ffffc9002dc01000 RSI: 0000000000000aa4 RDI: 0000000000000aa5
RBP: 0000000000000001 R08: ffffffff8fa3a737 R09: 1ffffffff1f474e6
R10: dffffc0000000000 R11: fffffbfff1f474e7 R12: 1ffff92000631d8c
R13: dffffc0000000000 R14: ffff888037618000 R15: ffff888037618000
FS:  00007f3b818de6c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 0000000111b74000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_extend_dir+0x1172/0x4870
 ocfs2_prepare_dir_for_insert+0x3d7b/0x5450
 ocfs2_symlink+0xaa4/0x23e0
 vfs_symlink+0x143/0x2f0
 do_symlinkat+0x1b1/0x3f0
 __x64_sys_symlink+0x7a/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b8098ec29
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:00007f3b818de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007f3b80bd5fa0 RCX: 00007f3b8098ec29
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000200000000600
RBP: 00007f3b80a11e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3b80bd6038 R14: 00007f3b80bd5fa0 R15: 00007fff2a62d798
 </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:ffffc9000318eac8 EFLAGS: 00010287
RAX: ffffffff83ae71a8 RBX: ffff8881220896b0 RCX: 0000000000080000
RDX: ffffc9002dc01000 RSI: 0000000000000aa4 RDI: 0000000000000aa5
RBP: 0000000000000001 R08: ffffffff8fa3a737 R09: 1ffffffff1f474e6
R10: dffffc0000000000 R11: fffffbfff1f474e7 R12: 1ffff92000631d8c
R13: dffffc0000000000 R14: ffff888037618000 R15: ffff888037618000
FS:  00007f3b818de6c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b818bdd58 CR3: 0000000111b74000 CR4: 00000000000006f0
