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| author | Tsutomu Itoh <t-itoh@jp.fujitsu.com> | 2011-04-25 19:43:52 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-04-25 19:43:52 -0400 |
| commit | 8d413713ca744fa00cf4e05d4054d80727b84789 (patch) | |
| tree | df29b480d83806cd4e85508ac676eb69323ddc79 /fs/btrfs | |
| parent | 43e817a1fdda17f3357602ed7964c248c8c53ae0 (diff) | |
| download | lwn-8d413713ca744fa00cf4e05d4054d80727b84789.tar.gz lwn-8d413713ca744fa00cf4e05d4054d80727b84789.zip | |
Btrfs: check return value of kmalloc()
The check on the return value of kmalloc() is added to some places.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 4 | ||||
| -rw-r--r-- | fs/btrfs/inode.c | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 31f33ba56fe8..cd52f7f556ef 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -8059,6 +8059,10 @@ static noinline int relocate_one_extent(struct btrfs_root *extent_root, u64 group_start = group->key.objectid; new_extents = kmalloc(sizeof(*new_extents), GFP_NOFS); + if (!new_extents) { + ret = -ENOMEM; + goto out; + } nr_extents = 1; ret = get_new_locations(reloc_inode, extent_key, diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index a4157cfdd533..c718d274a352 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -953,6 +953,7 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, 1, 0, NULL, GFP_NOFS); while (start < end) { async_cow = kmalloc(sizeof(*async_cow), GFP_NOFS); + BUG_ON(!async_cow); async_cow->inode = inode; async_cow->root = root; async_cow->locked_page = locked_page; @@ -5001,6 +5002,8 @@ static noinline int uncompress_inline(struct btrfs_path *path, inline_size = btrfs_file_extent_inline_item_len(leaf, btrfs_item_nr(leaf, path->slots[0])); tmp = kmalloc(inline_size, GFP_NOFS); + if (!tmp) + return -ENOMEM; ptr = btrfs_file_extent_inline_start(item); read_extent_buffer(leaf, tmp, ptr, inline_size); |