linux-kernel - [PATCH] regmap: Check readable regs in _regmap

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

Message-Id: <73e82a7cf77a1a68c5303def3071418b7d0ea382.1392029156.git.michal.simek@xilinx.com>
Date:	Mon, 10 Feb 2014 11:46:02 +0100
From:	Michal Simek <michal.simek@...inx.com>
To:	linux-kernel@...r.kernel.org, monstr@...str.eu
Cc:	Arnd Bergmann <arnd@...db.de>, Mark Brown <broonie@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] regmap: Check readable regs in _regmap_read

Check if regs are readable.

Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 drivers/base/regmap/regmap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6a19515..7569dfc 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1725,6 +1725,9 @@ static int _regmap_read(struct regmap *map, unsigned int reg,
 	int ret;
 	void *context = _regmap_map_get_context(map);

+	if (!regmap_readable(map, reg))
+		return -EIO;
+
 	WARN_ON(!map->reg_read);

 	if (!map->cache_bypass) {
--
1.8.2.3


Content of type "application/pgp-signature" skipped