diff options
| author | Rui Xiang <rui.xiang@huawei.com> | 2013-11-12 15:06:55 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-13 12:09:00 +0900 |
| commit | 58796207cf09552706b0c3e0669f2ce52ea6cee1 (patch) | |
| tree | c3023177cd5414a1199da59ba8d52f74f7a64d32 | |
| parent | 7391a294b861bf2c3b762dfdcf61b9c5f1bffa1f (diff) | |
| download | lwn-58796207cf09552706b0c3e0669f2ce52ea6cee1.tar.gz lwn-58796207cf09552706b0c3e0669f2ce52ea6cee1.zip | |
ocfs2: add necessary check in case sb_getblk() fails
sb_getblk() may return an err, so add a check for bh.
[joseph.qi@huawei.com: also add a check after calling sb_getblk() in ocfs2_create_xattr_block()]
Signed-off-by: Rui Xiang <rui.xiang@huawei.com>
Reviewed-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/ocfs2/refcounttree.c | 5 | ||||
| -rw-r--r-- | fs/ocfs2/xattr.c | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 70d083e60d40..55767e1ba724 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -612,6 +612,11 @@ static int ocfs2_create_refcount_tree(struct inode *inode, } new_bh = sb_getblk(inode->i_sb, first_blkno); + if (!new_bh) { + ret = -ENOMEM; + mlog_errno(ret); + goto out_commit; + } ocfs2_set_new_buffer_uptodate(&new_tree->rf_ci, new_bh); ret = ocfs2_journal_access_rb(handle, &new_tree->rf_ci, new_bh, diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index 82257299d5ea..f0a1326d9bba 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -2864,6 +2864,12 @@ static int ocfs2_create_xattr_block(struct inode *inode, } new_bh = sb_getblk(inode->i_sb, first_blkno); + if (!new_bh) { + ret = -ENOMEM; + mlog_errno(ret); + goto end; + } + ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), new_bh); ret = ocfs2_journal_access_xb(ctxt->handle, INODE_CACHE(inode), |