linux-kernel - Re: [PATCH] net: bluetooth: hci_core.c: Cleaning up uninitialized variables

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <AB19A214-D495-44EE-87E0-45332F156767@holtmann.org>
Date:	Sun, 1 Jun 2014 16:24:21 +0200
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	"Gustavo F. Padovan" <gustavo@...ovan.org>,
	Johan Hedberg <johan.hedberg@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-bluetooth <linux-bluetooth@...r.kernel.org>,
	Network Development <netdev@...r.kernel.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: bluetooth: hci_core.c:  Cleaning up uninitialized variables

Hi Rickard,

> There is a risk that the variable will be used without being initialized.
> 
> This was largely found by using a static code analysis program called cppcheck.
> 
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
> ---
> net/bluetooth/hci_core.c |    2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
> index 1c6ffaa..1d93d2f 100644
> --- a/net/bluetooth/hci_core.c
> +++ b/net/bluetooth/hci_core.c
> @@ -4603,7 +4603,7 @@ static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type,
> 	struct hci_chan *chan = NULL;
> 	unsigned int num = 0, min = ~0, cur_prio = 0;
> 	struct hci_conn *conn;
> -	int cnt, q, conn_num = 0;
> +	int cnt, q = 0, conn_num = 0;

I have no idea on how the variable will be used without being initialized. Have you actually looked through that function. The only thing we do with q is assign it and then use it. That is it.

Regards

Marcel

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/