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 jfs_mkdir+0x4eb/0x13a0 fs/jfs/namei.c:246 vfs_mkdir+0x4e7/0x850 fs/namei.c:4366 do_mkdirat+0x41a/0xf30 fs/namei.c:4399 __do_sys_mkdirat fs/namei.c:4416 [inline] __se_sys_mkdirat fs/namei.c:4414 [inline] __x64_sys_mkdirat+0xc1/0x140 fs/namei.c:4414 x64_sys_call+0x338/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable btstack created at: jfs_mkdir+0x7e/0x13a0 fs/jfs/namei.c:203 vfs_mkdir+0x4e7/0x850 fs/namei.c:4366 CPU: 1 UID: 0 PID: 25763 Comm: syz.7.5540 Tainted: G W syzkaller #0 PREEMPT(none) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 =====================================================