linux-kernel - RE: [PATCH] serial: sh-sci: Fix length of scatterlist

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Thu, 22 Oct 2015 06:36:23 +0000
From:	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	Greg KH <gregkh@...uxfoundation.org>,
	"jslaby@...e.com" <jslaby@...e.com>,
	"linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-sh list <linux-sh@...r.kernel.org>
Subject: RE: [PATCH] serial: sh-sci: Fix length of scatterlist

Hi Geert-san,

> Sent: Tuesday, October 20, 2015 9:22 PM
> 
> Hi Shimoda-san,
> 
> On Tue, Oct 20, 2015 at 2:18 PM, Yoshihiro Shimoda
> <yoshihiro.shimoda.uh@...esas.com> wrote:
> > This patch fixes an issue that the "length" of scatterlist should be
> > set using sh_dma_length(). Otherwise, a dmaengine driver cannot work
> 
> sg_dma_len()?

Thank you for the point. I will fix it.

> > correctly if CONFIG_NEED_SG_DMA_LENGTH=y.
> >
> > Fixes: 7b39d90184 (serial: sh-sci: Fix NULL pointer dereference if HIGHMEM is enabled)
> > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
> > ---
> >  drivers/tty/serial/sh-sci.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
> > index 960e50a..284a872 100644
> > --- a/drivers/tty/serial/sh-sci.c
> > +++ b/drivers/tty/serial/sh-sci.c
> > @@ -1437,7 +1437,7 @@ static void sci_request_dma(struct uart_port *port)
> >                         sg_init_table(sg, 1);
> >                         s->rx_buf[i] = buf;
> >                         sg_dma_address(sg) = dma;
> > -                       sg->length = s->buf_len_rx;
> > +                       sg_dma_length(sg) = s->buf_len_rx;
> 
> There's no definition for "sg_dma_length" in my tree?? sg_dma_len()?

Oops! Thank you for the point. I will fix it.

Best regards,
Yoshihiro Shimoda

> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds