linux-kernel - Re: possible regression on 3.13 when calling flush_dcache

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:	Thu, 12 Dec 2013 17:13:22 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Ludovic Desroches <ludovic.desroches@...el.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	iamjoonsoo.kim@....com
Subject: Re: possible regression on 3.13 when calling flush_dcache_page

On Thu, Dec 12, 2013 at 03:31:50PM +0100, Ludovic Desroches wrote:
> I'll investigate on atmel-mci driver side but if someone has also this
> issue or see what is wrong in the driver, please tell me all about it.

I'm not entirely sure what's causing this, but calling flush_dcache_page()
from an IRQ isn't the best idea, as one of its side effects will be to
unmask IRQs at the CPU.

BTW, the faulting function seems to have been removed in more recent
kernels.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/