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authorGeliang Tang <geliangtang@gmail.com>2016-11-18 23:02:46 +0800
committerMiklos Szeredi <mszeredi@redhat.com>2016-12-16 11:02:57 +0100
commit313684c48cc0e450ab303e1f82130ee2d0b50274 (patch)
treedad3e4f69bd80eea599675f79c41c26fa833f80e /fs/overlayfs
parent32a3d848eb91a298334991f1891e12e0362f91db (diff)
ovl: fix return value of ovl_fill_super
If kcalloc() failed, the return value of ovl_fill_super() is -EINVAL, not -ENOMEM. So this patch sets this value to -ENOMEM before calling kcalloc(), and sets it back to -EINVAL after calling kcalloc(). Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs')
-rw-r--r--fs/overlayfs/super.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 7da36ccda438..20f48abbb82f 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -774,10 +774,12 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
goto out_free_lowertmp;
}
+ err = -ENOMEM;
stack = kcalloc(stacklen, sizeof(struct path), GFP_KERNEL);
if (!stack)
goto out_free_lowertmp;
+ err = -EINVAL;
lower = lowertmp;
for (numlower = 0; numlower < stacklen; numlower++) {
err = ovl_lower_dir(lower, &stack[numlower], ufs,