[SCSI] lpfc: check before dereference in lpfc_ct.c

If we fail to allocate mp->virt during the first while loop iteration,
mlist is still uninitialized, therefore we should check if before
dereferencing.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Acked-by: James Smart <James.Smart@Emulex.Com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index 1b53afb..3add7c2 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -188,7 +188,8 @@ lpfc_alloc_ct_rsp(struct lpfc_hba * phba, int cmdcode, struct ulp_bde64 * bpl,
 
                if (!mp->virt) {
                        kfree(mp);
 
                if (!mp->virt) {
                        kfree(mp);

-                       lpfc_free_ct_rsp(phba, mlist);
+                       if (mlist)
+                               lpfc_free_ct_rsp(phba, mlist);

                        return NULL;
                }
 
                        return NULL;
                }