linux-kernel - Re: 2.6.21-rc4-mm1

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Date:	Tue, 20 Mar 2007 13:50:03 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Kees Cook <kees@...flux.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.21-rc4-mm1

On Tue, 20 Mar 2007 12:20:16 -0700 Kees Cook wrote:

> On Tue, Mar 20, 2007 at 10:31:51AM -0700, Randy Dunlap wrote:
> >   LD      .tmp_vmlinux1
> > kernel/built-in.o:(.data+0xfc0): undefined reference to `maps_protect'
> > make: *** [.tmp_vmlinux1] Error 1
> > 
> > with CONFIG_PROC_FS=n
> 
> Gah!  Apologies.  This should fix it, but I can't test it since I can't 
> get 2.6.21-rc4-mm1 to compile (with or without this fix):
> 
>   GEN     .version
> init/.missing_syscalls.h.cmd:2: *** missing separator.  Stop.
> make: *** [.tmp_vmlinux1] Error 2
> 
> 
> Signed-off-by: Kees Cook <kees@...flux.net>

Yes, that works_for_me.

Acked-by: Randy Dunlap <randy.dunlap@...cle.com>

> ---
> diff -uNrp linux-2.6.21-rc4-mm1/kernel/sysctl.c linux-2.6.21-rc4-mm1-kees/kernel/sysctl.c
> --- linux-2.6.21-rc4-mm1/kernel/sysctl.c	2007-03-20 10:45:06.000000000 -0700
> +++ linux-2.6.21-rc4-mm1-kees/kernel/sysctl.c	2007-03-20 11:36:06.000000000 -0700
> @@ -77,9 +77,12 @@ extern int pid_max_min, pid_max_max;
>  extern int sysctl_drop_caches;
>  extern int percpu_pagelist_fraction;
>  extern int compat_log;
> -extern int maps_protect;
>  extern int print_fatal_signals;
>  
> +#ifdef CONFIG_PROC_FS
> +extern int maps_protect;
> +#endif
> +
>  #if defined(CONFIG_ADAPTIVE_READAHEAD)
>  extern int readahead_ratio;
>  extern int readahead_hit_rate;
> @@ -619,6 +622,7 @@ static ctl_table kern_table[] = {
>  		.proc_handler	= &proc_dointvec,
>  	},
>  #endif
> +#ifdef CONFIG_PROC_FS
>  	{
>  		.ctl_name       = CTL_UNNUMBERED,
>  		.procname       = "maps_protect",
> @@ -627,6 +631,7 @@ static ctl_table kern_table[] = {
>  		.mode           = 0644,
>  		.proc_handler   = &proc_dointvec,
>  	},
> +#endif
>  
>  	{ .ctl_name = 0 }
>  };


---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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