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| author | David Sterba <dsterba@suse.cz> | 2015-01-02 18:45:16 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2015-01-14 19:23:46 +0100 |
| commit | 381cf6587f8a8a8e981bc0c1aaaa8859b51dc756 (patch) | |
| tree | 024b49bf7f036ff79846076c44710337bd0d5ec1 /fs/btrfs/ctree.c | |
| parent | eaa27f34e91a14cdceed26ed6c6793ec1d186115 (diff) | |
| download | linux-381cf6587f8a8a8e981bc0c1aaaa8859b51dc756.tar.bz2 | |
btrfs: fix leak of path in btrfs_find_item
If btrfs_find_item is called with NULL path it allocates one locally but
does not free it. Affected paths are inserting an orphan item for a file
and for a subvol root.
Move the path allocation to the callers.
CC: <stable@vger.kernel.org> # 3.14+
Fixes: 3f870c289900 ("btrfs: expand btrfs_find_item() to include find_orphan_item functionality")
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'fs/btrfs/ctree.c')
| -rw-r--r-- | fs/btrfs/ctree.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 14a72ed14ef7..f54511dd287e 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -2609,32 +2609,23 @@ static int key_search(struct extent_buffer *b, struct btrfs_key *key, return 0; } -int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *found_path, +int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, u64 iobjectid, u64 ioff, u8 key_type, struct btrfs_key *found_key) { int ret; struct btrfs_key key; struct extent_buffer *eb; - struct btrfs_path *path; + + ASSERT(path); key.type = key_type; key.objectid = iobjectid; key.offset = ioff; - if (found_path == NULL) { - path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; - } else - path = found_path; - ret = btrfs_search_slot(NULL, fs_root, &key, path, 0, 0); - if ((ret < 0) || (found_key == NULL)) { - if (path != found_path) - btrfs_free_path(path); + if ((ret < 0) || (found_key == NULL)) return ret; - } eb = path->nodes[0]; if (ret && path->slots[0] >= btrfs_header_nritems(eb)) { |