linux-kernel - [PATCH 4.14 064/343] drm/etnaviv: NULL vs IS_ERR() buf in etnaviv_core

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

Message-Id: <20200124092928.229078983@linuxfoundation.org>
Date:   Fri, 24 Jan 2020 10:28:02 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 064/343] drm/etnaviv: NULL vs IS_ERR() buf in etnaviv_core_dump()

From: Dan Carpenter <dan.carpenter@...cle.com>

[ Upstream commit f8261c376e7f8cb9024af5a6c54be540c7f9108e ]

The etnaviv_gem_get_pages() never returns NULL.  It returns error
pointers on error.

Fixes: a8c21a5451d8 ("drm/etnaviv: add initial etnaviv DRM driver")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Lucas Stach <l.stach@...gutronix.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/etnaviv/etnaviv_dump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_dump.c b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
index 2d955d7d7b6d8..e154e6fb64dac 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_dump.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_dump.c
@@ -207,7 +207,7 @@ void etnaviv_core_dump(struct etnaviv_gpu *gpu)
 		mutex_lock(&obj->lock);
 		pages = etnaviv_gem_get_pages(obj);
 		mutex_unlock(&obj->lock);
-		if (pages) {
+		if (!IS_ERR(pages)) {
 			int j;
 
 			iter.hdr->data[0] = bomap - bomap_start;
-- 
2.20.1