loop3: detected capacity change from 0 to 32768
UFO tlock:0xffffc9000352a048
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:784:21
index -1 is out of range for type 'struct dtslot[128]'
CPU: 0 UID: 0 PID: 7670 Comm: syz.3.185 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 ubsan_epilogue+0xa/0x40 lib/ubsan.c:233
 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:455
 dtSearch+0x1a66/0x21b0 fs/jfs/jfs_dtree.c:784
 dtDelete+0xe6/0x2c60 fs/jfs/jfs_dtree.c:2102
 jfs_rmdir+0x32e/0x840 fs/jfs/namei.c:379
 vfs_rmdir+0x3ba/0x520 fs/namei.c:4548
 do_rmdir+0x25f/0x550 fs/namei.c:4603
 __do_sys_rmdir fs/namei.c:4622 [inline]
 __se_sys_rmdir fs/namei.c:4620 [inline]
 __x64_sys_rmdir+0x47/0x50 fs/namei.c:4620
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f29a3f9f6c9
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:00007f29a21fe038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f29a41f5fa0 RCX: 00007f29a3f9f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007f29a4021f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f29a41f6038 R14: 00007f29a41f5fa0 R15: 00007ffd5a700ea8
 </TASK>
---[ end trace ]---