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/btnode.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 fs/nilfs2/btnode.h (limited to 'fs/nilfs2/btnode.h') diff --git a/fs/nilfs2/btnode.h b/fs/nilfs2/btnode.h new file mode 100644 index 000000000..4bc5612df --- /dev/null +++ b/fs/nilfs2/btnode.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * NILFS B-tree node cache + * + * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. + * + * Written by Seiji Kihara. + * Revised by Ryusuke Konishi. + */ + +#ifndef _NILFS_BTNODE_H +#define _NILFS_BTNODE_H + +#include +#include +#include +#include + +/** + * struct nilfs_btnode_chkey_ctxt - change key context + * @oldkey: old key of block's moving content + * @newkey: new key for block's content + * @bh: buffer head of old buffer + * @newbh: buffer head of new buffer + */ +struct nilfs_btnode_chkey_ctxt { + __u64 oldkey; + __u64 newkey; + struct buffer_head *bh; + struct buffer_head *newbh; +}; + +void nilfs_init_btnc_inode(struct inode *btnc_inode); +void nilfs_btnode_cache_clear(struct address_space *); +struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc, + __u64 blocknr); +int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, + blk_opf_t, struct buffer_head **, sector_t *); +void nilfs_btnode_delete(struct buffer_head *); +int nilfs_btnode_prepare_change_key(struct address_space *, + struct nilfs_btnode_chkey_ctxt *); +void nilfs_btnode_commit_change_key(struct address_space *, + struct nilfs_btnode_chkey_ctxt *); +void nilfs_btnode_abort_change_key(struct address_space *, + struct nilfs_btnode_chkey_ctxt *); + +#endif /* _NILFS_BTNODE_H */ -- cgit v1.3.1