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ovl: fix return value of ovl_fill_super

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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>
This commit is contained in:
Geliang Tang 2016-11-18 23:02:46 +08:00 committed by Miklos Szeredi
parent 32a3d848eb
commit 313684c48c
1 changed files with 2 additions and 0 deletions
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2
fs/overlayfs/super.c
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@ -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,