tree c8b27735e4104bae438aa481d36e91eeb6ee5816
parent 1fa8f4504130adc34a071a29170f570102136835
author Yi Zou <yi.zou@intel.com> 1344985603 -0700
committer Nicholas Bellinger <nab@linux-iscsi.org> 1345163626 -0700

target: fix NULL pointer dereference bug alloc_page() fails to get memory

I am hitting this bug when the target is low in memory that fails the
alloc_page() for the newly submitted command. This is a sort of off-by-one
bug causing NULL pointer dereference in __free_page() since 'i' here is
really the counter of total pages that have been successfully allocated here.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Cc: Andy Grover <agrover@redhat.com>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Open-FCoE.org <devel@open-fcoe.org>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>