linux-kernel - Re: [PATCH] drm/i915: Fix memory leaks in i915 selftests

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Message-ID: <0ff4dfcd-ee87-ddef-df47-4c11edb6ac94@kylinos.cn>
Date:   Thu, 13 Apr 2023 17:07:47 +0800
From:   Cong Liu <liucong2@...inos.cn>
To:     Andi Shyti <andi.shyti@...ux.intel.com>
Cc:     jani.nikula@...ux.intel.com, airlied@...il.com,
        andrzej.hajda@...el.com, chris@...is-wilson.co.uk, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org, gwan-gyeong.mun@...el.com,
        intel-gfx@...ts.freedesktop.org, jonathan.cavitt@...el.com,
        joonas.lahtinen@...ux.intel.com, linux-kernel@...r.kernel.org,
        matthew.auld@...el.com, matthew.brost@...el.com,
        mchehab@...nel.org, nirmoy.das@...el.com, rodrigo.vivi@...el.com,
        tvrtko.ursulin@...ux.intel.com
Subject: Re: [PATCH] drm/i915: Fix memory leaks in i915 selftests

Hi Andi,

thank you for your reminder, next time I will pay attention to my 
format, and when someone has already
reviewed, add the Reviewed-by field

Regards.

On 2023/4/13 16:44, Andi Shyti wrote:
> On Thu, Apr 13, 2023 at 03:55:26PM +0800, Cong Liu wrote:
>> This patch fixes memory leaks on error escapes in function fake_get_pages
>>
>> Fixes: c3bfba9a2225 ("drm/i915: Check for integer truncation on scatterlist creation")
>> Signed-off-by: Cong Liu <liucong2@...inos.cn>
> OK, while I was proposing the adjustments suggested by Jani you
> already replied to the e-mail. I will keep your version.
>
> Anyway, next time, please, do not forget to add the r-b's, in
> this case it was Andrzej's.
>
> Andi
>
>> ---
>>   drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 4 +++-
>>   1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
>> index 5361ce70d3f2..154801f1c468 100644
>> --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
>> +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
>> @@ -69,8 +69,10 @@ static int fake_get_pages(struct drm_i915_gem_object *obj)
>>   
>>   	rem = round_up(obj->base.size, BIT(31)) >> 31;
>>   	/* restricted by sg_alloc_table */
>> -	if (overflows_type(rem, unsigned int))
>> +	if (overflows_type(rem, unsigned int)) {
>> +		kfree(pages);
>>   		return -E2BIG;
>> +	}
>>   
>>   	if (sg_alloc_table(pages, rem, GFP)) {
>>   		kfree(pages);
>> -- 
>> 2.34.1
>>
>>
>> No virus found
>> 		Checked by Hillstone Network AntiVirus