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+0x3961/0x3d40 fs/jfs/jfs_dtree.c:774 jfs_lookup+0x179/0x590 fs/jfs/namei.c:1464 lookup_open fs/namei.c:4456 [inline] open_last_lookups fs/namei.c:4583 [inline] path_openat+0x2c84/0x64c0 fs/namei.c:4827 do_file_open+0x2aa/0x680 fs/namei.c:4859 do_sys_openat2+0x163/0x380 fs/open.c:1366 do_sys_open fs/open.c:1372 [inline] __do_sys_openat fs/open.c:1388 [inline] __se_sys_openat fs/open.c:1383 [inline] __x64_sys_openat+0x240/0x300 fs/open.c:1383 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:4456 [inline] open_last_lookups fs/namei.c:4583 [inline] path_openat+0x2c84/0x64c0 fs/namei.c:4827 CPU: 1 UID: 0 PID: 16457 Comm: syz.4.2188 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 =====================================================