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

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Date:	Thu, 2 Jun 2011 16:00:51 -0700
From:	Tony Luck <tony.luck@...el.com>
To:	Richard Weinberger <richard@....at>
Cc:	Eric Paris <eparis@...hat.com>, linux-kernel@...r.kernel.org,
	fenghua.yu@...el.com, monstr@...str.eu, ralf@...ux-mips.org,
	benh@...nel.crashing.org, paulus@...ba.org, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com, linux390@...ibm.com,
	lethal@...ux-sh.org, davem@...emloft.net, jdike@...toit.com,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	x86@...nel.org, viro@...iv.linux.org.uk, oleg@...hat.com,
	akpm@...ux-foundation.org, linux-ia64@...r.kernel.org,
	microblaze-uclinux@...e.uq.edu.au, linux-mips@...ux-mips.org,
	linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
	linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net
Subject: Re: [PATCH] Audit: push audit success and retcode into arch ptrace.h

> 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

-Tony
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