From: Kevin Hilman <khilman@ti.com>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] arm: mach-omap2: potential NULL dereference
Date: Tue, 01 Feb 2011 22:22:19 +0000 [thread overview]
Message-ID: <87lj1zpf8k.fsf@ti.com> (raw)
In-Reply-To: <20110119125721.GA9203@albatros> (Vasiliy Kulikov's message of "Wed, 19 Jan 2011 15:57:22 +0300")
Vasiliy Kulikov <segoon@openwall.com> writes:
> kzalloc() may fail, if so return -ENOMEM. Also Walter Harms suggested
> to use kasprintf() instead of kzalloc+strcpy+strcat.
>
> Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
> ---
> Cannot compile this driver, so it is not tested at all.
Boot tested on 3430/n900 and 3630/Zoom3.
Queueing for 2.6.39 (branch: for_2.6.39/pm-misc)
Kevin
> arch/arm/mach-omap2/smartreflex.c | 8 +++++---
> 1 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
> index 77ecebf..697d8d4 100644
> --- a/arch/arm/mach-omap2/smartreflex.c
> +++ b/arch/arm/mach-omap2/smartreflex.c
> @@ -260,9 +260,11 @@ static int sr_late_init(struct omap_sr *sr_info)
> if (sr_class->class_type = SR_CLASS2 &&
> sr_class->notify_flags && sr_info->irq) {
>
> - name = kzalloc(SMARTREFLEX_NAME_LEN + 1, GFP_KERNEL);
> - strcpy(name, "sr_");
> - strcat(name, sr_info->voltdm->name);
> + name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name);
> + if (name = NULL) {
> + ret = -ENOMEM;
> + goto error;
> + }
> ret = request_irq(sr_info->irq, sr_interrupt,
> 0, name, (void *)sr_info);
> if (ret)
WARNING: multiple messages have this Message-ID (diff)
From: Kevin Hilman <khilman@ti.com>
To: Vasiliy Kulikov <segoon@openwall.com>
Cc: linux-kernel@vger.kernel.org, walter harms <wharms@bfs.de>,
kernel-janitors@vger.kernel.org, Tony Lindgren <tony@atomide.com>,
Russell King <linux@arm.linux.org.uk>,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] arm: mach-omap2: potential NULL dereference
Date: Tue, 01 Feb 2011 14:22:19 -0800 [thread overview]
Message-ID: <87lj1zpf8k.fsf@ti.com> (raw)
In-Reply-To: <20110119125721.GA9203@albatros> (Vasiliy Kulikov's message of "Wed, 19 Jan 2011 15:57:22 +0300")
Vasiliy Kulikov <segoon@openwall.com> writes:
> kzalloc() may fail, if so return -ENOMEM. Also Walter Harms suggested
> to use kasprintf() instead of kzalloc+strcpy+strcat.
>
> Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
> ---
> Cannot compile this driver, so it is not tested at all.
Boot tested on 3430/n900 and 3630/Zoom3.
Queueing for 2.6.39 (branch: for_2.6.39/pm-misc)
Kevin
> arch/arm/mach-omap2/smartreflex.c | 8 +++++---
> 1 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
> index 77ecebf..697d8d4 100644
> --- a/arch/arm/mach-omap2/smartreflex.c
> +++ b/arch/arm/mach-omap2/smartreflex.c
> @@ -260,9 +260,11 @@ static int sr_late_init(struct omap_sr *sr_info)
> if (sr_class->class_type == SR_CLASS2 &&
> sr_class->notify_flags && sr_info->irq) {
>
> - name = kzalloc(SMARTREFLEX_NAME_LEN + 1, GFP_KERNEL);
> - strcpy(name, "sr_");
> - strcat(name, sr_info->voltdm->name);
> + name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name);
> + if (name == NULL) {
> + ret = -ENOMEM;
> + goto error;
> + }
> ret = request_irq(sr_info->irq, sr_interrupt,
> 0, name, (void *)sr_info);
> if (ret)
WARNING: multiple messages have this Message-ID (diff)
From: khilman@ti.com (Kevin Hilman)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] arm: mach-omap2: potential NULL dereference
Date: Tue, 01 Feb 2011 14:22:19 -0800 [thread overview]
Message-ID: <87lj1zpf8k.fsf@ti.com> (raw)
In-Reply-To: <20110119125721.GA9203@albatros> (Vasiliy Kulikov's message of "Wed, 19 Jan 2011 15:57:22 +0300")
Vasiliy Kulikov <segoon@openwall.com> writes:
> kzalloc() may fail, if so return -ENOMEM. Also Walter Harms suggested
> to use kasprintf() instead of kzalloc+strcpy+strcat.
>
> Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
> ---
> Cannot compile this driver, so it is not tested at all.
Boot tested on 3430/n900 and 3630/Zoom3.
Queueing for 2.6.39 (branch: for_2.6.39/pm-misc)
Kevin
> arch/arm/mach-omap2/smartreflex.c | 8 +++++---
> 1 files changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
> index 77ecebf..697d8d4 100644
> --- a/arch/arm/mach-omap2/smartreflex.c
> +++ b/arch/arm/mach-omap2/smartreflex.c
> @@ -260,9 +260,11 @@ static int sr_late_init(struct omap_sr *sr_info)
> if (sr_class->class_type == SR_CLASS2 &&
> sr_class->notify_flags && sr_info->irq) {
>
> - name = kzalloc(SMARTREFLEX_NAME_LEN + 1, GFP_KERNEL);
> - strcpy(name, "sr_");
> - strcat(name, sr_info->voltdm->name);
> + name = kasprintf(GFP_KERNEL, "sr_%s", sr_info->voltdm->name);
> + if (name == NULL) {
> + ret = -ENOMEM;
> + goto error;
> + }
> ret = request_irq(sr_info->irq, sr_interrupt,
> 0, name, (void *)sr_info);
> if (ret)
next prev parent reply other threads:[~2011-02-01 22:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-17 10:08 [PATCH] arm: mach-omap2: potential NULL dereference Vasiliy Kulikov
2011-01-17 10:08 ` Vasiliy Kulikov
2011-01-17 10:08 ` Vasiliy Kulikov
2011-01-17 10:08 ` Vasiliy Kulikov
2011-01-17 10:08 ` Vasiliy Kulikov
2011-01-17 10:08 ` Vasiliy Kulikov
2011-01-17 10:38 ` walter harms
2011-01-17 10:38 ` walter harms
2011-01-17 10:38 ` walter harms
2011-01-19 12:57 ` [PATCH v2] " Vasiliy Kulikov
2011-01-19 12:57 ` Vasiliy Kulikov
2011-01-19 12:57 ` Vasiliy Kulikov
2011-02-01 22:22 ` Kevin Hilman [this message]
2011-02-01 22:22 ` Kevin Hilman
2011-02-01 22:22 ` Kevin Hilman
2011-01-17 12:30 ` [PATCH] " Sergei Shtylyov
2011-01-17 12:30 ` Sergei Shtylyov
2011-01-17 12:30 ` Sergei Shtylyov
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