linux-kernel - Re: [PATCH] module: fix build when DEBUGP is defined

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Date:	Wed, 12 Jan 2011 08:26:17 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	lkml <linux-kernel@...r.kernel.org>,
	akpm <akpm@...ux-foundation.org>
Subject: Re: [PATCH] module: fix build when DEBUGP is defined

On 01/12/11 00:48, Rusty Russell wrote:
> On Wed, 12 Jan 2011 11:51:53 am Randy Dunlap wrote:
>> From: Randy Dunlap <randy.dunlap@...cle.com>
>>
>> Fix module loader build when DEBUGP is defined.
>> Fixes build error & warning:
>>
>> kernel/module.c:1910: error: 'name' undeclared (first use in this function)
>> kernel/module.c:2567: warning: format '%lx' expects type 'long unsigned int', but argument 2 has type 'Elf64_Addr'
>>
>> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
>> Cc: Rusty Russell <rusty@...tcorp.com.au>
>> ---
>>  kernel/module.c |    4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> --- linux-next-20110111.orig/kernel/module.c
>> +++ linux-next-20110111/kernel/module.c
>> @@ -1907,7 +1907,7 @@ static void layout_sections(struct modul
>>  			    || strstarts(sname, ".init"))
>>  				continue;
>>  			s->sh_entsize = get_offset(mod, &mod->core_size, s, i);
>> -			DEBUGP("\t%s\n", name);
>> +			DEBUGP("\t%s\n", sname);
>>  		}
>>  		switch (m) {
>>  		case 0: /* executable */
>> @@ -2563,7 +2563,7 @@ static int move_module(struct module *mo
>>  			memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size);
>>  		/* Update sh_addr to point to copy in image. */
>>  		shdr->sh_addr = (unsigned long)dest;
>> -		DEBUGP("\t0x%lx %s\n",
>> +		DEBUGP("\t0x%llx %s\n",
>>  		       shdr->sh_addr, info->secstrings + shdr->sh_name);
> 
> This will break on 32-bit.  We really need a cast to long here :(

Really?  I built it on i386 and x86_64 (successfully).

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