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

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Date:	Mon, 02 Oct 2006 11:37:48 -0400
From:	James Smart <James.Smart@...lex.Com>
To:	Eric Sesterhenn <snakebyte@....de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [Patch] Dereference in drivers/scsi/lpfc/lpfc_ct.c

ACK - good fix.

-- james s

Eric Sesterhenn wrote:
> 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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