Search Linux Wireless

RE: [patch 3/4 v2] mwifiex: prevent corruption instead of just warning

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Dan,

Thanks for the patch.

> -----Original Message-----
> From: Dan Carpenter [mailto:dan.carpenter@xxxxxxxxxx]
> Sent: Wednesday, October 19, 2011 12:32 AM
> To: Bing Zhao
> Cc: John W. Linville; linux-wireless@xxxxxxxxxxxxxxx; kernel-janitors@xxxxxxxxxxxxxxx
> Subject: [patch 3/4 v2] mwifiex: prevent corruption instead of just warning
> 
> Probably we never hit this condition, but in case we do, we may as
> well put a return here instead of just printing a warning message and
> then corrupting memory.  The caller doesn't check the return code.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

Acked-by: Bing Zhao <bzhao@xxxxxxxxxxx>

Regards,
Bing

> ---
> v2: Use the error handling code to free the skb before returning.
> 
> diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c
> index d12d440..a2f3200 100644
> --- a/drivers/net/wireless/mwifiex/pcie.c
> +++ b/drivers/net/wireless/mwifiex/pcie.c
> @@ -1228,9 +1228,12 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter,
>  	if (!skb)
>  		return 0;
> 
> -	if (rdptr >= MWIFIEX_MAX_EVT_BD)
> +	if (rdptr >= MWIFIEX_MAX_EVT_BD) {
>  		dev_err(adapter->dev, "event_complete: Invalid rdptr 0x%x\n",
>  					rdptr);
> +		ret = -EINVAL;
> +		goto done;
> +	}
> 
>  	/* Read the event ring write pointer set by firmware */
>  	if (mwifiex_read_reg(adapter, REG_EVTBD_WRPTR, &wrptr)) {
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]
  Powered by Linux