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Commit 8d413713 authored by Tsutomu Itoh's avatar Tsutomu Itoh Committed by Chris Mason
Browse files

Btrfs: check return value of kmalloc() 



The check on the return value of kmalloc() is added to some places.

Signed-off-by: default avatarTsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 43e817a1

fs/btrfs/extent-tree.c

+4 −0
Original line number Diff line number Diff line
@@ -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,

fs/btrfs/inode.c

+3 −0
Original line number Diff line number Diff line
@@ -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);