Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422685AbaGRNfH (ORCPT ); Fri, 18 Jul 2014 09:35:07 -0400 Received: from bband-dyn38.178-41-141.t-com.sk ([178.41.141.38]:17737 "EHLO ip4-83-240-18-248.cust.nbox.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1030782AbaGRNOW (ORCPT ); Fri, 18 Jul 2014 09:14:22 -0400 From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Nicholas Bellinger , Jiri Slaby Subject: [PATCH 3.12 008/170] target: Fix left-over se_lun->lun_sep pointer OOPs Date: Fri, 18 Jul 2014 14:10:13 +0200 Message-Id: <659489c914e8f1c88a453f8b91134dab58cdf8b6.1405685481.git.jslaby@suse.cz> X-Mailer: git-send-email 2.0.0 In-Reply-To: <48e8cad86bb1241c08bdaa80db022c25068ff8e0.1405685481.git.jslaby@suse.cz> References: <48e8cad86bb1241c08bdaa80db022c25068ff8e0.1405685481.git.jslaby@suse.cz> In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nicholas Bellinger 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit 83ff42fcce070801a3aa1cd6a3269d7426271a8d upstream. This patch fixes a left-over se_lun->lun_sep pointer OOPs when one of the /sys/kernel/config/target/$FABRIC/$WWPN/$TPGT/lun/$LUN/alua* attributes is accessed after the $DEVICE symlink has been removed. To address this bug, go ahead and clear se_lun->lun_sep memory in core_dev_unexport(), so that the existing checks for show/store ALUA attributes in target_core_fabric_configfs.c work as expected. Reported-by: Sebastian Herbszt Tested-by: Sebastian Herbszt Signed-off-by: Nicholas Bellinger Signed-off-by: Jiri Slaby --- drivers/target/target_core_device.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index e31ec5cf0c36..c7a3c5e2b1b3 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -617,6 +617,7 @@ void core_dev_unexport( dev->export_count--; spin_unlock(&hba->device_lock); + lun->lun_sep = NULL; lun->lun_se_dev = NULL; } -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/