Re: [PATCH v2 25/33] s390/cpacf: Unpoison the results of cpacf_trng()

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To: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Subject: Re: [PATCH v2 25/33] s390/cpacf: Unpoison the results of cpacf_trng()
From: Alexander Potapenko <glider@xxxxxxxxxx>
Date: Mon, 11 Dec 2023 11:36:27 +0100
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Christoph Lameter <cl@xxxxxxxxx>, David Rientjes <rientjes@xxxxxxxxxx>, Heiko Carstens <hca@xxxxxxxxxxxxx>, Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>, Marco Elver <elver@xxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Pekka Enberg <penberg@xxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Vasily Gorbik <gor@xxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>, kasan-dev@xxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-trace-kernel@xxxxxxxxxxxxxxx, Mark Rutland <mark.rutland@xxxxxxx>, Roman Gushchin <roman.gushchin@xxxxxxxxx>, Sven Schnelle <svens@xxxxxxxxxxxxx>
In-reply-to: <20231121220155.1217090-26-iii@linux.ibm.com>
References: <20231121220155.1217090-1-iii@linux.ibm.com> <20231121220155.1217090-26-iii@linux.ibm.com>

On Tue, Nov 21, 2023 at 11:02 PM Ilya Leoshkevich <iii@xxxxxxxxxxxxx> wrote:
>
> Prevent KMSAN from complaining about buffers filled by cpacf_trng()
> being uninitialized.
>
> Tested-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
> Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>

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References:
- [PATCH v2 00/33] kmsan: Enable on s390
  - From: Ilya Leoshkevich
- [PATCH v2 25/33] s390/cpacf: Unpoison the results of cpacf_trng()
  - From: Ilya Leoshkevich

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