From 506ada89629ec7059b96ecfb0dc7d33ece0103ca Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 17:05:56 -0700 Subject: bpf: mark a NULL kfunc argument precise check_kfunc_arg() allows bpf_register_is_null() for nullable arguments w/o marking the underlying scalar register precise. Hence a checkpoint created on such a path would prune against arbitrary scalar value. Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)") Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com Signed-off-by: Alexei Starovoitov --- fs/nilfs2/direct.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 fs/nilfs2/direct.h (limited to 'fs/nilfs2/direct.h') diff --git a/fs/nilfs2/direct.h b/fs/nilfs2/direct.h new file mode 100644 index 000000000..b7ca89626 --- /dev/null +++ b/fs/nilfs2/direct.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * NILFS direct block pointer. + * + * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation. + * + * Written by Koji Sato. + */ + +#ifndef _NILFS_DIRECT_H +#define _NILFS_DIRECT_H + +#include +#include +#include "bmap.h" + + +#define NILFS_DIRECT_NBLOCKS (NILFS_BMAP_SIZE / sizeof(__le64) - 1) +#define NILFS_DIRECT_KEY_MIN 0 +#define NILFS_DIRECT_KEY_MAX (NILFS_DIRECT_NBLOCKS - 1) + + +int nilfs_direct_init(struct nilfs_bmap *); +int nilfs_direct_delete_and_convert(struct nilfs_bmap *, __u64, __u64 *, + __u64 *, int); + + +#endif /* _NILFS_DIRECT_H */ -- cgit v1.3.1