From: Dan Carpenter <dan.carpenter@oracle.com>
To: Lucas Stach <l.stach@pengutronix.de>
Cc: David Airlie <airlied@linux.ie>,
kernel-janitors@vger.kernel.org, etnaviv@lists.freedesktop.org,
dri-devel@lists.freedesktop.org,
Russell King <linux+etnaviv@armlinux.org.uk>
Subject: [PATCH] drm/etnaviv: potential NULL dereference
Date: Tue, 05 Feb 2019 09:08:19 +0000 [thread overview]
Message-ID: <20190205090816.GA20168@kadam> (raw)
The etnaviv_gem_prime_get_sg_table() is supposed to return error
pointers. Otherwise it can lead to a NULL dereference when it's called
from drm_gem_map_dma_buf().
Fixes: 5f4a4a73f437 ("drm/etnaviv: fix gem_prime_get_sg_table to return new SG table")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
index 0566171f8df2..f21529e635e3 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c
@@ -15,7 +15,7 @@ struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj)
int npages = obj->size >> PAGE_SHIFT;
if (WARN_ON(!etnaviv_obj->pages)) /* should have already pinned! */
- return NULL;
+ return ERR_PTR(-EINVAL);
return drm_prime_pages_to_sg(etnaviv_obj->pages, npages);
}
--
2.17.1
next reply other threads:[~2019-02-05 9:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-05 9:08 Dan Carpenter [this message]
2019-02-08 9:52 ` [PATCH] drm/etnaviv: potential NULL dereference Christian Gmeiner
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