linux-kernel - Re: [PATCH] lib/bug: make panic_on_warn available for all architectures

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Message-ID: <56A23450.8090900@redhat.com>
Date:	Fri, 22 Jan 2016 08:53:20 -0500
From:	Prarit Bhargava <prarit@...hat.com>
To:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	Christian Borntraeger <borntraeger@...ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lib/bug: make panic_on_warn available for all architectures



On 01/22/2016 08:12 AM, Heiko Carstens wrote:
> Christian Borntraeger reported that panic_on_warn doesn't have any
> effect on s390.
> 
> The panic_on_warn feature was introduced with 9e3961a09798 ("kernel:
> add panic_on_warn"). However it did care only for the case when
> WANT_WARN_ON_SLOWPATH is defined. This is turn is only the case for
> architectures which do not have an own __WARN_TAINT defined.
> 
> Other architectures which do have __WARN_TAINT defined call
> report_bug() for warnings within lib/bug.c which does not call panic()
> in case panic_on_warn is set.
> 
> Let's simply enable the panic_on_warn feature by adding the same code
> like it was added to warn_slowpath_common() in panic.c.
> 
> This enables panic_on_warn also for arm64, parisc, powerpc, s390 and
> sh.
> 
> Cc: Prarit Bhargava <prarit@...hat.com>
> Reported-by: Christian Borntraeger <borntraeger@...ibm.com>
> Signed-off-by: Heiko Carstens <heiko.carstens@...ibm.com>

Acked-by: Prarit Bhargava <prarit@...hat.com>

P.