linux-kernel - Re: [patch] mfd: lp8788-irq: uninitialized variable in irq handler

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]

Date:	Mon, 14 Mar 2016 08:08:44 +0900
From:	"Kim, Milo" <milo.kim@...com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	Lee Jones <lee.jones@...aro.org>, <linux-kernel@...r.kernel.org>,
	<kernel-janitors@...r.kernel.org>
Subject: Re: [patch] mfd: lp8788-irq: uninitialized variable in irq handler

On 3/11/2016 5:11 PM, Dan Carpenter wrote:
> Instead to being true/false, the "handled" is true/uninitialized.
> Presumably this doesn't cause that many problems in real life because
> normally we handle the IRQ.
>
> Fixes: eea6b7cc53aa ('mfd: Add lp8788 mfd driver')
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Acked-by: Milo Kim <milo.kim@...com>

Thanks for catching this!

>
> diff --git a/drivers/mfd/lp8788-irq.c b/drivers/mfd/lp8788-irq.c
> index c7a9825..792d51b 100644
> --- a/drivers/mfd/lp8788-irq.c
> +++ b/drivers/mfd/lp8788-irq.c
> @@ -112,7 +112,7 @@ static irqreturn_t lp8788_irq_handler(int irq, void *ptr)
>   	struct lp8788_irq_data *irqd = ptr;
>   	struct lp8788 *lp = irqd->lp;
>   	u8 status[NUM_REGS], addr, mask;
> -	bool handled;
> +	bool handled = false;
>   	int i;
>
>   	if (lp8788_read_multi_bytes(lp, LP8788_INT_1, status, NUM_REGS))
>