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authorRui Xiang <rui.xiang@huawei.com>2013-11-12 15:06:55 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 12:09:00 +0900
commit58796207cf09552706b0c3e0669f2ce52ea6cee1 (patch)
treec3023177cd5414a1199da59ba8d52f74f7a64d32 /fs/ocfs2
parent7391a294b861bf2c3b762dfdcf61b9c5f1bffa1f (diff)
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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>
Diffstat (limited to 'fs/ocfs2')
-rw-r--r--fs/ocfs2/refcounttree.c5
-rw-r--r--fs/ocfs2/xattr.c6
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),