btstack dump:
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
bn = 0, index = 0
=====================================================
BUG: KMSAN: uninit-value in BT_STACK_DUMP+0x5e5/0x600 fs/jfs/jfs_btree.h:136
 BT_STACK_DUMP+0x5e5/0x600 fs/jfs/jfs_btree.h:136
 dtSearch+0x393f/0x3d30 fs/jfs/jfs_dtree.c:774
 dtDelete+0xa7/0x4ab0 fs/jfs/jfs_dtree.c:2102
 jfs_rename+0x1701/0x2df0 fs/jfs/namei.c:1239
 vfs_rename+0x2138/0x2640 fs/namei.c:5929
 do_renameat2+0xb7f/0x15a0 fs/namei.c:6047
 __do_sys_rename fs/namei.c:6090 [inline]
 __se_sys_rename fs/namei.c:6088 [inline]
 __x64_sys_rename+0xd7/0x140 fs/namei.c:6088
 x64_sys_call+0x2c5/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:83
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd3/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable btstack created at:
 dtDelete+0x68/0x4ab0 fs/jfs/jfs_dtree.c:2086
 jfs_rename+0x1701/0x2df0 fs/jfs/namei.c:1239

CPU: 0 UID: 0 PID: 15563 Comm: syz.0.2234 Tainted: G        W    L      syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
=====================================================