linux-kernel - [PATCH 3.13 120/120] mmc: sdhci-pci: Fix possibility of chip->fixes being null

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: <20140211184827.067308699@linuxfoundation.org>
Date:	Tue, 11 Feb 2014 11:06:01 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Adrian Hunter <adrian.hunter@...el.com>,
	Chris Ball <chris@...ntf.net>
Subject: [PATCH 3.13 120/120] mmc: sdhci-pci: Fix possibility of chip->fixes being null

3.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Adrian Hunter <adrian.hunter@...el.com>

commit 945be38caa287b177b8c17ffaae7754cab6a658f upstream.

It is possible for chip->fixes to be null.  Check before dereferencing it.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Chris Ball <chris@...ntf.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/host/sdhci-pci.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -1466,7 +1466,8 @@ static struct sdhci_pci_slot *sdhci_pci_
 	 * from runtime suspend.  If it is not there, don't allow runtime PM.
 	 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
 	 */
-	if (chip->fixes->own_cd_for_runtime_pm && !gpio_is_valid(slot->cd_gpio))
+	if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
+	    !gpio_is_valid(slot->cd_gpio))
 		chip->allow_runtime_pm = false;
 
 	return slot;


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/