bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
bn = 0, index = 4
=====================================================
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+0x37aa/0x3b90 fs/jfs/jfs_dtree.c:771
 jfs_lookup+0x179/0x590 fs/jfs/namei.c:1464
 lookup_open fs/namei.c:4484 [inline]
 open_last_lookups fs/namei.c:4611 [inline]
 path_openat+0x2c84/0x64c0 fs/namei.c:4855
 do_file_open+0x2aa/0x680 fs/namei.c:4887
 do_sys_openat2+0x163/0x370 fs/open.c:1364
 do_sys_open fs/open.c:1370 [inline]
 __do_sys_openat fs/open.c:1386 [inline]
 __se_sys_openat fs/open.c:1381 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1381
 x64_sys_call+0x2445/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable btstack created at:
 jfs_lookup+0x44/0x590 fs/jfs/namei.c:1454
 lookup_open fs/namei.c:4484 [inline]
 open_last_lookups fs/namei.c:4611 [inline]
 path_openat+0x2c84/0x64c0 fs/namei.c:4855

CPU: 1 UID: 0 PID: 14033 Comm: syz.0.1161 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
=====================================================