lkml.org 
[lkml]   [2019]   [Dec]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: ubifs mount failure
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> wrote:
> > >
> > > ----- Ursprüngliche 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_info *c)
> sup = kzalloc(ALIGN(UBIFS_SB_NODE_SZ, c->min_io_size), GFP_KERNEL);
> mst = kzalloc(c->mst_node_alsz, GFP_KERNEL);
> idx_node_size = ubifs_idx_node_sz(c, 1);
> - idx = kzalloc(ALIGN(tmp, c->min_io_size), GFP_KERNEL);
> + idx = kzalloc(ALIGN(idx_node_size, c->min_io_size), GFP_KERNEL);
> ino = kzalloc(ALIGN(UBIFS_INO_NODE_SZ, c->min_io_size), GFP_KERNEL);
> cs = kzalloc(ALIGN(UBIFS_CS_NODE_SZ, c->min_io_size), GFP_KERNEL);
>
> --
> 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.

\
 
 \ /
  Last update: 2019-12-03 11:54    [W:0.059 / U:10.296 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site