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f2fs: handle errors from get_node_page calls

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Add check for error pointers returned from get_node_page in order to
avoid dereferencing a bad address on the next use.

Signed-off-by: Jason Hrycay <jason.hrycay@motorola.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jason Hrycay 2013-05-31 12:45:11 -05:00 committed by Jaegeuk Kim
parent 83d5d6f66b
commit 1e03e38b35
1 changed files with 4 additions and 0 deletions
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4
fs/f2fs/xattr.c
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@ -218,6 +218,8 @@ int f2fs_getxattr(struct inode *inode, int name_index, const char *name,
return -ENODATA;
page = get_node_page(sbi, fi->i_xattr_nid);
if (IS_ERR(page))
return PTR_ERR(page);
base_addr = page_address(page);
list_for_each_xattr(entry, base_addr) {
@ -268,6 +270,8 @@ ssize_t f2fs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
return 0;
page = get_node_page(sbi, fi->i_xattr_nid);
if (IS_ERR(page))
return PTR_ERR(page);
base_addr = page_address(page);
list_for_each_xattr(entry, base_addr) {