Subject: Re: linux-next: build failure after merge of the akpm tree

From: Joe Perches <[email-masked]>
Date: Mon, 22 Oct 2012 21:21:45 -0700

On Tue, 2012-10-23 at 14:42 +1100, Stephen Rothwell wrote:
> Hi Andrew,
> 
> After merging the akpm tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> kernel/printk/printk_syslog.c: In function 'printk_syslog_print':
> kernel/printk/printk_syslog.c:108:3: error: implicit declaration of function 'copy_to_user' [-Werror=implicit-function-declaration]
> kernel/printk/printk_syslog.c: In function 'do_syslog':
> kernel/printk/printk_syslog.c:245:3: error: implicit declaration of function 'access_ok' [-Werror=implicit-function-declaration]
> kernel/printk/printk_syslog.c:245:18: error: 'VERIFY_WRITE' undeclared (first use in this function)
> kernel/printk/printk_syslog.c:245:18: note: each undeclared identifier is reported only once for each function it appears in
> 
> Caused by commit 598815e5f25f ("printk: add printk_syslog.c and .h").
> 
> Presumably missing an (or some) include files - see Rule 1 in
> Documentation/SubmitChecklist.

Yup, missing at least <linux/uaccess.h> which x86 gets
via an arch specific include.

I compiled it only x86.

I'll resubmit that one.