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authorNicholas Bellinger <nab@linux-iscsi.org>2014-06-16 20:25:54 +0000
committerNicholas Bellinger <nab@linux-iscsi.org>2014-06-26 20:56:49 -0700
commit83ff42fcce070801a3aa1cd6a3269d7426271a8d (patch)
tree0cd8c770581abf6cef11fd01d8a4761df2cfd682
parente4fae2318b5ddd7aec0e65871f1b455b796cf33d (diff)
downloadlinux-stericsson-83ff42fcce070801a3aa1cd6a3269d7426271a8d.tar.gz
target: Fix left-over se_lun->lun_sep pointer OOPs
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>
-rw-r--r--drivers/target/target_core_device.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 11d26fe65bfb..98da90167159 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -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;
}