loop0: detected capacity change from 0 to 32768
UFO tlock:0xffffc9000293a048
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:784:28
index -1 is out of range for type 'dtslot [128]'
CPU: 0 UID: 0 PID: 7423 Comm: syz.0.598 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120
 ubsan_epilogue lib/ubsan.c:233 [inline]
 __ubsan_handle_out_of_bounds+0x11c/0x160 lib/ubsan.c:455
 dtSearch+0x232a/0x24c0 fs/jfs/jfs_dtree.c:784
 dtDelete+0xe8/0x34c0 fs/jfs/jfs_dtree.c:2102
 jfs_rmdir+0x3bd/0x830 fs/jfs/namei.c:379
 vfs_rmdir fs/namei.c:5245 [inline]
 vfs_rmdir+0x382/0x840 fs/namei.c:5218
 do_rmdir+0x3be/0x560 fs/namei.c:5300
 __do_sys_rmdir fs/namei.c:5324 [inline]
 __se_sys_rmdir fs/namei.c:5322 [inline]
 __x64_sys_rmdir+0xc5/0x110 fs/namei.c:5322
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f93ca78f749
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:00007f93c89f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f93ca9e5fa0 RCX: 00007f93ca78f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000000c0
RBP: 00007f93ca813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f93ca9e6038 R14: 00007f93ca9e5fa0 R15: 00007ffda5ecac88
 </TASK>
---[ end trace ]---