[SCSI] be2iscsi: fix null ptr when accessing task hdr

If alloc_pdu fails then the task->hdr pointer may not be
set. This adds a check for this case in the cleanup callback.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
index be07ca06177e..79cefbe31367 100644
--- a/drivers/scsi/be2iscsi/be_main.c
+++ b/drivers/scsi/be2iscsi/be_main.c
@@ -3914,7 +3914,8 @@ static void beiscsi_cleanup_task(struct iscsi_task *task)
                         io_task->psgl_handle = NULL;
                 }
         } else {
-                if ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN)
+                if (task->hdr &&
+                   ((task->hdr->opcode & ISCSI_OPCODE_MASK) == ISCSI_OP_LOGIN))
                         return;
                 if (io_task->psgl_handle) {
                         spin_lock(&phba->mgmt_sgl_lock);