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Re: [PATCH] Audit: push audit success and retcode into arch ptrace.h

To: Tony Luck <tony.luck@intel.com>
Subject: Re: [PATCH] Audit: push audit success and retcode into arch ptrace.h
From: Eric Paris <eparis@redhat.com>
Date: Thu, 02 Jun 2011 19:07:56 -0400
Cc: Richard Weinberger <richard@nod.at>, linux-kernel@vger.kernel.org, fenghua.yu@intel.com, monstr@monstr.eu, ralf@linux-mips.org, benh@kernel.crashing.org, paulus@samba.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, linux390@de.ibm.com, lethal@linux-sh.org, davem@davemloft.net, jdike@addtoit.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, viro@zeniv.linux.org.uk, oleg@redhat.com, akpm@linux-foundation.org, linux-ia64@vger.kernel.org, microblaze-uclinux@itee.uq.edu.au, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, user-mode-linux-devel@lists.sourceforge.net
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On 06/02/2011 07:00 PM, Tony Luck wrote:
>> But there seems to be another problem.
>> Why is pt_regs of type void *?
>>
>> gcc complains:
>> In file included from include/linux/fsnotify.h:15:0,
>>                 from include/linux/security.h:26,
>>                 from init/main.c:32:
>> include/linux/audit.h: In function ‘audit_syscall_exit’:
>> include/linux/audit.h:440:17: warning: dereferencing ‘void *’ pointer
>> include/linux/audit.h:440:3: error: invalid use of void expression
>> include/linux/audit.h:441:21: warning: dereferencing ‘void *’ pointer
>> include/linux/audit.h:441:21: error: void value not ignored as it ought to be
> 
> Perhaps same issue on ia64 - but symptoms are different:
> 
>   CC      crypto/cipher.o
> In file included from include/linux/fsnotify.h:15,
>                  from include/linux/security.h:26,
>                  from init/do_mounts.c:8:
> include/linux/audit.h: In function ‘audit_syscall_exit’:
> include/linux/audit.h:440: warning: dereferencing ‘void *’ pointer
> include/linux/audit.h:440: error: request for member ‘r10’ in
> something not a structure or union
> include/linux/audit.h:441: error: request for member ‘r10’ in
> something not a structure or union
> include/linux/audit.h:441: error: request for member ‘r8’ in something
> not a structure or union
> include/linux/audit.h:441: error: request for member ‘r8’ in something
> not a structure or union
> include/linux/audit.h:441: error: expected ‘;’ before ‘}’ token
> include/linux/audit.h:441: error: void value not ignored as it ought to be

I think it is the same problem.  I'll redo the patch with typed static
inlines instead of #defines and all of this should hopefully work out.

-Eric

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