From: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Arto Merilainen <amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: airlied-cv59FeDIM0c@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
tbergstrom-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 3/6] gpu: host1x: Fix memory access in syncpt request
Date: Sun, 26 May 2013 12:15:52 +0200 [thread overview]
Message-ID: <20130526101551.GC1652@mithrandir> (raw)
In-Reply-To: <1368791388-31441-4-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
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On Fri, May 17, 2013 at 02:49:45PM +0300, Arto Merilainen wrote:
> This patch fixes a bad memory access in syncpoint request code. If
> no syncpoints were available, the code accessed unreserved memory
> area causing unexpected behaviour.
>
> Signed-off-by: Arto Merilainen <amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
> ---
> drivers/gpu/host1x/syncpt.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
> index 5bf5366..6b7ee88 100644
> --- a/drivers/gpu/host1x/syncpt.c
> +++ b/drivers/gpu/host1x/syncpt.c
> @@ -40,7 +40,7 @@ static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host,
>
> for (i = 0; i < host->info->nb_pts && sp->name; i++, sp++)
> ;
> - if (sp->dev)
> + if (i >= host->info->nb_pts)
> return NULL;
While changing this, can you please add a blank line between the loop
and the new 'if (...)'?
Thierry
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WARNING: multiple messages have this Message-ID (diff)
From: Thierry Reding <thierry.reding@gmail.com>
To: Arto Merilainen <amerilainen@nvidia.com>
Cc: airlied@linux.ie, linux-tegra@vger.kernel.org,
tbergstrom@nvidia.com, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/6] gpu: host1x: Fix memory access in syncpt request
Date: Sun, 26 May 2013 12:15:52 +0200 [thread overview]
Message-ID: <20130526101551.GC1652@mithrandir> (raw)
In-Reply-To: <1368791388-31441-4-git-send-email-amerilainen@nvidia.com>
[-- Attachment #1: Type: text/plain, Size: 939 bytes --]
On Fri, May 17, 2013 at 02:49:45PM +0300, Arto Merilainen wrote:
> This patch fixes a bad memory access in syncpoint request code. If
> no syncpoints were available, the code accessed unreserved memory
> area causing unexpected behaviour.
>
> Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
> ---
> drivers/gpu/host1x/syncpt.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
> index 5bf5366..6b7ee88 100644
> --- a/drivers/gpu/host1x/syncpt.c
> +++ b/drivers/gpu/host1x/syncpt.c
> @@ -40,7 +40,7 @@ static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host,
>
> for (i = 0; i < host->info->nb_pts && sp->name; i++, sp++)
> ;
> - if (sp->dev)
> + if (i >= host->info->nb_pts)
> return NULL;
While changing this, can you please add a blank line between the loop
and the new 'if (...)'?
Thierry
[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]
next prev parent reply other threads:[~2013-05-26 10:15 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-17 11:49 [PATCH 0/6] Miscellaneous fixes to host1x Arto Merilainen
2013-05-17 11:49 ` Arto Merilainen
2013-05-17 11:49 ` [PATCH 2/6] gpu: host1x: Fix syncpoint wait return value Arto Merilainen
2013-05-17 11:49 ` Arto Merilainen
[not found] ` <1368791388-31441-3-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-26 10:12 ` Thierry Reding
2013-05-26 10:12 ` Thierry Reding
2013-05-27 6:55 ` Arto Merilainen
2013-05-27 6:55 ` Arto Merilainen
[not found] ` <51A30372.6080907-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-28 10:39 ` Thierry Reding
2013-05-28 10:39 ` Thierry Reding
2013-05-28 19:12 ` Keith Packard
2013-05-28 19:12 ` Keith Packard
[not found] ` <86y5ay6hrn.fsf-07MG1JmyPZaz9DMzp4kqnw@public.gmane.org>
2013-06-11 10:48 ` Thierry Reding
2013-06-11 10:48 ` Thierry Reding
2013-06-11 11:00 ` Daniel Vetter
2013-06-11 11:00 ` Daniel Vetter
2013-06-11 11:43 ` Terje Bergström
2013-06-11 12:09 ` Daniel Vetter
[not found] ` <CAKMK7uGRW4uqsSaDEehTZwknZH+mNEgyKB6-4TgfgUOaTOcoLA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-11 18:19 ` Thierry Reding
2013-06-11 18:19 ` Thierry Reding
2013-06-12 10:28 ` Terje Bergström
2013-06-12 11:00 ` Daniel Vetter
[not found] ` <1368791388-31441-1-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-17 11:49 ` [PATCH 1/6] gpu: host1x: Fixes to host1x firewall Arto Merilainen
2013-05-17 11:49 ` Arto Merilainen
[not found] ` <1368791388-31441-2-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-26 10:02 ` Thierry Reding
2013-05-26 10:02 ` Thierry Reding
2013-05-27 6:22 ` Arto Merilainen
2013-05-27 6:22 ` Arto Merilainen
2013-05-17 11:49 ` [PATCH 3/6] gpu: host1x: Fix memory access in syncpt request Arto Merilainen
2013-05-17 11:49 ` Arto Merilainen
[not found] ` <1368791388-31441-4-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-26 10:15 ` Thierry Reding [this message]
2013-05-26 10:15 ` Thierry Reding
2013-05-27 6:56 ` Arto Merilainen
2013-05-27 6:56 ` Arto Merilainen
2013-05-17 11:49 ` [PATCH 4/6] gpu: host1x: Fix client_managed type Arto Merilainen
2013-05-17 11:49 ` Arto Merilainen
[not found] ` <1368791388-31441-5-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-26 10:17 ` Thierry Reding
2013-05-26 10:17 ` Thierry Reding
2013-05-17 11:49 ` [PATCH 5/6] gpu: host1x: Rework CPU syncpoint increment Arto Merilainen
2013-05-17 11:49 ` Arto Merilainen
[not found] ` <1368791388-31441-6-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-26 10:24 ` Thierry Reding
2013-05-26 10:24 ` Thierry Reding
2013-05-17 11:49 ` [PATCH 6/6] drm/tegra: Fix syncpoint increment return code Arto Merilainen
2013-05-17 11:49 ` Arto Merilainen
[not found] ` <1368791388-31441-7-git-send-email-amerilainen-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-05-26 10:26 ` Thierry Reding
2013-05-26 10:26 ` Thierry Reding
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