From 313684c48cc0e450ab303e1f82130ee2d0b50274 Mon Sep 17 00:00:00 2001 From: Geliang Tang Date: Fri, 18 Nov 2016 23:02:46 +0800 Subject: [PATCH] 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 Signed-off-by: Miklos Szeredi --- fs/overlayfs/super.c | 2 ++ 1 file changed, 2 insertions(+) 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, -- GitLab