linux-kernel - Re: next build: 235 warnings 3 failures (next/next-20151117)

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:	Tue, 17 Nov 2015 18:03:40 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Will Deacon <will.deacon@....com>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	kernel-build-reports@...ts.linaro.org, olof@...om.net,
	David Miller <davem@...emloft.net>, eric.dumazet@...il.com,
	netdev@...r.kernel.org, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: next build: 235 warnings 3 failures (next/next-20151117)

On Tuesday 17 November 2015 16:44:53 Will Deacon wrote:
> > 8<----
> > Subject: ARM64: make smp_load_acquire() work with const arguments
> > 
> > smp_load_acquire() uses typeof() to declare a local variable for temporarily
> > storing the output of the memory access. This fails when the argument is
> > constant, because the assembler complains about using a constant register
> > as output:
> > 
> >  arch/arm64/include/asm/barrier.h:71:3: error: read-only variable '___p1'
> >  used as 'asm' output
> 
> Do you know the usage in the kernel causing this warning?

A newly introduced function in include/net/sock.h:

static inline int sk_state_load(const struct sock *sk)
{
        return smp_load_acquire(&sk->sk_state);
}

	Arnd
--
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/