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Message-ID: <5gjmqurpvdyb6sxpeytev7clxxrkpbjncjb623z4dg3vbaqzvm@kavc7th7svwd>
Date: Sat, 8 Feb 2025 22:44:51 -0500
From: Ethan Carter Edwards <ethan@...ancedwards.com>
To: "rafael@...nel.org" <rafael@...nel.org>
Cc: "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>,
"linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>
Subject: Re: [PATCH v3] thermal/debugfs: change kzalloc to kcalloc
I wanted to check in on this. Anything I need to change?
Thanks,
Ethan
On 25/01/19 01:35PM, Ethan Carter Edwards wrote:
> We are replacing any instances of kzalloc(size * count, ...) with
> kcalloc(count, size, ...) due to risk of overflow [1].
>
> [1] https://www.kernel.org/doc/html/next/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments
> Link: https://github.com/KSPP/linux/issues/162
>
> Signed-off-by: Ethan Carter Edwards <ethan@...ancedwards.com>
> ---
> v3: fix description and email client formatting
> v2: fix typo
> drivers/thermal/thermal_debugfs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/thermal/thermal_debugfs.c b/drivers/thermal/thermal_debugfs.c
> index c800504c3cfe..29dc1431a252 100644
> --- a/drivers/thermal/thermal_debugfs.c
> +++ b/drivers/thermal/thermal_debugfs.c
> @@ -876,7 +876,7 @@ void thermal_debug_tz_add(struct thermal_zone_device *tz)
>
> tz_dbg->tz = tz;
>
> - tz_dbg->trips_crossed = kzalloc(sizeof(int) * tz->num_trips, GFP_KERNEL);
> + tz_dbg->trips_crossed = kcalloc(tz->num_trips, sizeof(int), GFP_KERNEL);
> if (!tz_dbg->trips_crossed) {
> thermal_debugfs_remove_id(thermal_dbg);
> return;
> --
> 2.47.1
>
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