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| author | David Sterba | 2015-01-02 18:45:16 +0100 |
|---|---|---|
| committer | David Sterba | 2015-01-14 19:23:46 +0100 |
| commit | 381cf6587f8a8a8e981bc0c1aaaa8859b51dc756 (patch) | |
| tree | 024b49bf7f036ff79846076c44710337bd0d5ec1 /fs/btrfs/tree-log.c | |
| parent | linux 3.19-rc4 (diff) | |
| download | kernel-qcow2-linux-381cf6587f8a8a8e981bc0c1aaaa8859b51dc756.tar.gz kernel-qcow2-linux-381cf6587f8a8a8e981bc0c1aaaa8859b51dc756.tar.xz kernel-qcow2-linux-381cf6587f8a8a8e981bc0c1aaaa8859b51dc756.zip | |
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/tree-log.c')
| -rw-r--r-- | fs/btrfs/tree-log.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 9a02da16f2be..5be45c12dd71 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -1257,10 +1257,19 @@ static int insert_orphan_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 offset) { int ret; - ret = btrfs_find_item(root, NULL, BTRFS_ORPHAN_OBJECTID, + struct btrfs_path *path; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + + ret = btrfs_find_item(root, path, BTRFS_ORPHAN_OBJECTID, offset, BTRFS_ORPHAN_ITEM_KEY, NULL); if (ret > 0) ret = btrfs_insert_orphan_item(trans, root, offset); + + btrfs_free_path(path); + return ret; } |