Eric Lee / smarc-ti-linux-kernel

5
Download as
Browse Code ยป

Commit 83ff42fcce070801a3aa1cd6a3269d7426271a8d

Authored by Nicholas Bellinger
1 parent e4fae2318b

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>

Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff

drivers/target/target_core_device.c
Diff comments   View file @ 83ff42f
... ... @@ -616,6 +616,7 @@
616 616 dev->export_count--;
617 617 spin_unlock(&hba->device_lock);
618 618  
  619 + lun->lun_sep = NULL;
619 620 lun->lun_se_dev = NULL;
620 621 }
621 622