linux-kernel - Re: linux-next: build warning after merge of the overlayfs tree

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Message-ID: <CAOQ4uxi0-WCYq3FHOAHVSRGdhzz_BY-+0+dVcS7ftGVuM=F-vg@mail.gmail.com>
Date:   Wed, 17 May 2017 08:00:14 +0300
From:   Amir Goldstein <amir73il@...il.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Miklos Szeredi <miklos@...redi.hu>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build warning after merge of the overlayfs tree

On Wed, May 17, 2017 at 3:19 AM, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> Hi Miklos,
>
> After merging the overlayfs tree, today's linux-next build (powerpc
> ppc64_defconfig) produced this warning:
>
> fs/overlayfs/dir.c: In function 'ovl_rename':
> fs/overlayfs/dir.c:1060:2: warning: 'newdentry' may be used uninitialized in this function [-Wmaybe-uninitialized]
>   dput(newdentry);
>   ^
> fs/overlayfs/dir.c:1062:2: warning: 'olddentry' may be used uninitialized in this function [-Wmaybe-uninitialized]
>   dput(olddentry);
>   ^
>
> Introduced by commit
>
>   02cac3227a28 ("ovl: mark upper dir with type origin entries "impure"")
>

Posted a fix for that ("ovl: fix wrong error handling of ovl_set_impure()")

Thanks!