From: Arto Merilainen <amerilainen@nvidia.com>
To: <thierry.reding@avionic-design.de>, <airlied@linux.ie>,
<linux-tegra@vger.kernel.org>
Cc: <tbergstrom@nvidia.com>, <dri-devel@lists.freedesktop.org>,
<linux-kernel@vger.kernel.org>,
Arto Merilainen <amerilainen@nvidia.com>
Subject: [PATCH 3/6] gpu: host1x: Fix memory access in syncpt request
Date: Fri, 17 May 2013 14:49:45 +0300 [thread overview]
Message-ID: <1368791388-31441-4-git-send-email-amerilainen@nvidia.com> (raw)
In-Reply-To: <1368791388-31441-1-git-send-email-amerilainen@nvidia.com>
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;
name = kasprintf(GFP_KERNEL, "%02d-%s", sp->id,
--
1.7.9.5
next prev parent reply other threads:[~2013-05-17 11:53 UTC|newest]
Thread overview: 23+ 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 ` [PATCH 1/6] gpu: host1x: Fixes to host1x firewall Arto Merilainen
2013-05-26 10:02 ` Thierry Reding
2013-05-27 6:22 ` Arto Merilainen
2013-05-17 11:49 ` [PATCH 2/6] gpu: host1x: Fix syncpoint wait return value Arto Merilainen
2013-05-26 10:12 ` Thierry Reding
2013-05-27 6:55 ` Arto Merilainen
2013-05-28 10:39 ` Thierry Reding
2013-05-28 19:12 ` Keith Packard
2013-06-11 10:48 ` Thierry Reding
2013-06-11 11:00 ` Daniel Vetter
[not found] ` <51B70D52.9060601@nvidia.com>
2013-06-11 12:09 ` Daniel Vetter
2013-06-11 18:19 ` Thierry Reding
[not found] ` <51B84D4E.30703@nvidia.com>
2013-06-12 11:00 ` Daniel Vetter
2013-05-17 11:49 ` Arto Merilainen [this message]
2013-05-26 10:15 ` [PATCH 3/6] gpu: host1x: Fix memory access in syncpt request Thierry Reding
2013-05-27 6:56 ` Arto Merilainen
2013-05-17 11:49 ` [PATCH 4/6] gpu: host1x: Fix client_managed type Arto Merilainen
2013-05-26 10:17 ` Thierry Reding
2013-05-17 11:49 ` [PATCH 5/6] gpu: host1x: Rework CPU syncpoint increment Arto Merilainen
2013-05-26 10:24 ` Thierry Reding
2013-05-17 11:49 ` [PATCH 6/6] drm/tegra: Fix syncpoint increment return code Arto Merilainen
2013-05-26 10:26 ` Thierry Reding
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