linux-kernel - [Patch] Dereference in drivers/scsi/lpfc/lpfc

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Message-Id: <1159734706.11887.6.camel@alice>
Date:	Sun, 01 Oct 2006 22:31:46 +0200
From:	Eric Sesterhenn <snakebyte@....de>
To:	linux-kernel@...r.kernel.org
Cc:	james.smart@...lex.com
Subject: [Patch] Dereference in drivers/scsi/lpfc/lpfc_ct.c

hi,

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@....de>

--- linux-2.6.18-git16/drivers/scsi/lpfc/lpfc_ct.c.orig	2006-10-01 22:28:37.000000000 +0200
+++ linux-2.6.18-git16/drivers/scsi/lpfc/lpfc_ct.c	2006-10-01 22:29:10.000000000 +0200
@@ -188,7 +188,8 @@ lpfc_alloc_ct_rsp(struct lpfc_hba * phba
 
 		if (!mp->virt) {
 			kfree(mp);
-			lpfc_free_ct_rsp(phba, mlist);
+			if (mlist)
+				lpfc_free_ct_rsp(phba, mlist);
 			return NULL;
 		}
 


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