btstack dump:
bn = 0, index = 0
bn = 30, index = 0
bn = 0, index = 0
bn = 30, index = 0
bn = 0, index = 0
bn = 30, index = 0
bn = 0, index = 0
=====================================================
BUG: KMSAN: uninit-value in BT_STACK_DUMP fs/jfs/jfs_btree.h:136 [inline]
BUG: KMSAN: uninit-value in dtSearch+0x401f/0x40d0 fs/jfs/jfs_dtree.c:773
 BT_STACK_DUMP fs/jfs/jfs_btree.h:136 [inline]
 dtSearch+0x401f/0x40d0 fs/jfs/jfs_dtree.c:773
 jfs_lookup+0x1a2/0x510 fs/jfs/namei.c:1461
 lookup_open fs/namei.c:3629 [inline]
 open_last_lookups fs/namei.c:3750 [inline]
 path_openat+0x2969/0x6250 fs/namei.c:3986
 do_filp_open+0x268/0x600 fs/namei.c:4016
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1453
 x64_sys_call+0x36f5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable btstack created at:
 jfs_lookup+0x44/0x510 fs/jfs/namei.c:1451
 lookup_open fs/namei.c:3629 [inline]
 open_last_lookups fs/namei.c:3750 [inline]
 path_openat+0x2969/0x6250 fs/namei.c:3986

CPU: 0 UID: 0 PID: 6745 Comm: syz.7.142 Tainted: G        W          6.14.0-rc1-syzkaller-00026-gd009de7d5428 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
=====================================================