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 NOPTI
CPU: 1 UID: 0 PID: 14936 Comm: syz.6.1932 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170 fs/ocfs2/uptodate.c:509
Code: 80 3c 20 00 74 08 4c 89 f7 e8 43 9e 71 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 7d 99 9a 07 e8 18 a6 0b fe 90 <0f> 0b e8 10 a6 0b fe 90 0f 0b e8 08 a6 0b fe 90 0f 0b e8 00 a6 0b
RSP: 0018:ffffc900036c6988 EFLAGS: 00010287
RAX: ffffffff83b5a568 RBX: ffff888067425db0 RCX: 0000000000080000
RDX: ffffc9000ddb0000 RSI: 000000000000077d RDI: 000000000000077e
RBP: 0000000000000001 R08: ffffffff8f812d77 R09: 1ffffffff1f025ae
R10: dffffc0000000000 R11: fffffbfff1f025af R12: 1ffff920006d8d64
R13: dffffc0000000000 R14: ffff888046d511d0 R15: ffff888046d511d0
FS:  00007f656b2ee6c0(0000) GS:ffff88812618e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e150ee1008 CR3: 00000000534e9000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ocfs2_extend_dir+0x115b/0x4850 fs/ocfs2/dir.c:3309
 ocfs2_prepare_dx_dir_for_insert fs/ocfs2/dir.c:4232 [inline]
 ocfs2_prepare_dir_for_insert+0x3d4e/0x5420 fs/ocfs2/dir.c:4288
 ocfs2_mknod+0x80e/0x2030 fs/ocfs2/namei.c:297
 ocfs2_create+0x195/0x420 fs/ocfs2/namei.c:676
 vfs_create+0x3aa/0x400 fs/namei.c:4132
 do_mknodat+0x3ea/0x610 fs/namei.c:5039
 __do_sys_mknodat fs/namei.c:5071 [inline]
 __se_sys_mknodat fs/namei.c:5068 [inline]
 __x64_sys_mknodat+0xa7/0xc0 fs/namei.c:5068
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f656a38f749
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:00007f656b2ee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000103
RAX: ffffffffffffffda RBX: 00007f656a5e5fa0 RCX: 00007f656a38f749
RDX: 0000000000000000 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f656a413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f656a5e6038 R14: 00007f656a5e5fa0 R15: 00007fffc876e4a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_set_new_buffer_uptodate+0x149/0x170 fs/ocfs2/uptodate.c:509
Code: 80 3c 20 00 74 08 4c 89 f7 e8 43 9e 71 fe 4d 8b 1e 48 89 df 5b 41 5c 41 5d 41 5e 41 5f 5d 2e e9 7d 99 9a 07 e8 18 a6 0b fe 90 <0f> 0b e8 10 a6 0b fe 90 0f 0b e8 08 a6 0b fe 90 0f 0b e8 00 a6 0b
RSP: 0018:ffffc900036c6988 EFLAGS: 00010287
RAX: ffffffff83b5a568 RBX: ffff888067425db0 RCX: 0000000000080000
RDX: ffffc9000ddb0000 RSI: 000000000000077d RDI: 000000000000077e
RBP: 0000000000000001 R08: ffffffff8f812d77 R09: 1ffffffff1f025ae
R10: dffffc0000000000 R11: fffffbfff1f025af R12: 1ffff920006d8d64
R13: dffffc0000000000 R14: ffff888046d511d0 R15: ffff888046d511d0
FS:  00007f656b2ee6c0(0000) GS:ffff88812618e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd48b7c0e9c CR3: 00000000534e9000 CR4: 0000000000350ef0