]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commitdiff
target: Fix left-over se_lun->lun_sep pointer OOPs
authorNicholas Bellinger <nab@linux-iscsi.org>
Mon, 16 Jun 2014 20:25:54 +0000 (20:25 +0000)
committerNicholas Bellinger <nab@linux-iscsi.org>
Fri, 27 Jun 2014 03:56:49 +0000 (20:56 -0700)
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 <herbszt@gmx.de>
Tested-by: Sebastian Herbszt <herbszt@gmx.de>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
drivers/target/target_core_device.c

index 11d26fe65bfb09a278213c5937b6038041fca085..98da90167159b198dfc65a8ebdc912b350e4c6f0 100644 (file)
@@ -616,6 +616,7 @@ void core_dev_unexport(
        dev->export_count--;
        spin_unlock(&hba->device_lock);
 
+       lun->lun_sep = NULL;
        lun->lun_se_dev = NULL;
 }