Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
MIME-Version: 1.0
References: <MN2PR02MB5727000CBE70BAF31F60FEE4AF420@MN2PR02MB5727.namprd02.prod.outlook.com>
 <20191203084134.tgzir4mtekpm5xbs@pengutronix.de> <MN2PR02MB57272E3343CA62ADBA0F97E5AF420@MN2PR02MB5727.namprd02.prod.outlook.com>
 <614898763.105471.1575364223372.JavaMail.zimbra@nod.at> <CALgLF9KPAk_AsecnTMmbdF5qbgqXe7HNOrNariNVbhSr6FVN2g@mail.gmail.com>
 <20191203104558.vpqav3oxsydoe4aw@pengutronix.de>
In-Reply-To: <20191203104558.vpqav3oxsydoe4aw@pengutronix.de>
From:   naga suresh kumar <nagasureshkumarrelli@gmail.com>
Date:   Tue, 3 Dec 2019 16:23:34 +0530
Message-ID: <CALgLF9+H-8BdZ0BkmpcEL8B1G1cpPsC+=5oqz6ErnTOhnG7yZQ@mail.gmail.com>
Subject: Re: ubifs mount failure
To:     Sascha Hauer <s.hauer@pengutronix.de>
Cc:     Richard Weinberger <richard@nod.at>,
        Naga Sureshkumar Relli <nagasure@xilinx.com>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Michal Simek <michals@xilinx.com>,
        linux-mtd <linux-mtd@lists.infradead.org>,
        siva.durga.paladugu@xilinx.com
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi Sascha,

Tested this patch. and it worked.
Thanks for your quick response.

On Tue, Dec 3, 2019 at 4:16 PM Sascha Hauer <s.hauer@pengutronix.de> wrote:
>
> On Tue, Dec 03, 2019 at 04:06:12PM +0530, naga suresh kumar wrote:
> > Hi Richard,
> >
> > On Tue, Dec 3, 2019 at 2:40 PM Richard Weinberger <richard@nod.at> wrot=
e:
> > >
> > > ----- Urspr=C3=BCngliche Mail -----
> > > > Von: "Naga Sureshkumar Relli" <nagasure@xilinx.com>
> > > > https://elixir.bootlin.com/linux/v5.4/source/fs/ubifs/sb.c#L164
> > > > we are trying to allocate 4325376 (~4MB)
> > >
> > > 4MiB? Is ->min_io_size that large?
> > if you see https://elixir.bootlin.com/linux/latest/source/fs/ubifs/sb.c=
#L164
> > The size is actually ALIGN(tmp, c->min_io_size).
> > Here tmp is of 4325376 Bytes and min_io_size is 16384 Bytes
>
> 'tmp' contains bogus values. Try this:
>
> ----------------------------8<--------------------------------
>
> From 34f687fce189085f55706b4cddcb288a08f4ee06 Mon Sep 17 00:00:00 2001
> From: Sascha Hauer <s.hauer@pengutronix.de>
> Date: Tue, 3 Dec 2019 11:41:20 +0100
> Subject: [PATCH] ubifs: Fix wrong memory allocation
>
> In create_default_filesystem() when we allocate the idx node we must use
> the idx_node_size we calculated just one line before, not tmp, which
> contains completely other data.
>
> Fixes: c4de6d7e4319 ("ubifs: Refactor create_default_filesystem()")
> Reported-by: Naga Sureshkumar Relli <nagasure@xilinx.com>
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>  fs/ubifs/sb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
> index a551eb3e9b89..6681c18e52b8 100644
> --- a/fs/ubifs/sb.c
> +++ b/fs/ubifs/sb.c
> @@ -161,7 +161,7 @@ static int create_default_filesystem(struct ubifs_inf=
o *c)
>         sup =3D kzalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_KERN=
EL);
>         mst =3D kzalloc(c->mst_node_alsz, GFP_KERNEL);
>         idx_node_size =3D ubifs_idx_node_sz(c, 1);
> -       idx =3D kzalloc(ALIGN(tmp, c->min_io_size), GFP_KERNEL);
> +       idx =3D kzalloc(ALIGN(idx_node_size, c->min_io_size), GFP_KERNEL)=
;
>         ino =3D kzalloc(ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size), GFP_KER=
NEL);
>         cs =3D kzalloc(ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size), GFP_KERNE=
L);
>
> --
> 2.24.0
>
>
> --
> Pengutronix e.K.                           |                             =
|
> Steuerwalder Str. 21                       | http://www.pengutronix.de/  =
|
> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    =
|
> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 =
|

Thanks,
Naga Sureshkumar Relli.