linux-kernel - Re: [PATCH] [scsi] lpfc: potential leak in lpfc_sli_hbqbuf_fill

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Date:	Thu, 19 Jul 2007 13:44:50 -0400
From:	James Smart <James.Smart@...lex.Com>
To:	Florin Malita <fmalita@...il.com>
CC:	James.Bottomley@...elEye.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	James Smart <James.Smart@...lex.Com>
Subject: Re: [PATCH] [scsi] lpfc: potential leak in lpfc_sli_hbqbuf_fill_hbqs

Florin,

Thanks for the effort to create this patch.  Turns out we have already
fixed this, and have it included in our 8.2.2 patch set, which we will be
posting within the next week.

So James, don't pick this patch up, take the larger patch set instead.

Thanks.

-- james s

Florin Malita wrote:
> If lpfc_hbq_alloc() fails, an hbq_buffer is leaked. Found by Coverity 
> (1775).
> 
> Signed-off-by: Florin Malita <fmalita@...il.com>
> ---
> 
> drivers/scsi/lpfc/lpfc_sli.c |    4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
> index f4d5a6b..fe16b0c 100644
> --- a/drivers/scsi/lpfc/lpfc_sli.c
> +++ b/drivers/scsi/lpfc/lpfc_sli.c
> @@ -622,8 +622,10 @@ lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, 
> uint32_t hbqno, uint32_t count)
>             return 1;
>         hbq_buffer->dbuf.virt = lpfc_hbq_alloc(phba, MEM_PRI,
>                             &hbq_buffer->dbuf.phys);
> -        if (hbq_buffer->dbuf.virt == NULL)
> +        if (hbq_buffer->dbuf.virt == NULL) {
> +            kfree(hbq_buffer);
>             return 1;
> +        }
>         hbq_buffer->tag = (i | (hbqno << 16));
>         lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer);
>         lpfc_hbq_defs[hbqno]->buffer_count++;
> 
> 
-
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