lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sat, 18 Oct 2014 17:12:08 +0200
From:	Manfred Schlaegl <manfred.schlaegl@....at>
To:	Richard Weinberger <richard@....at>, Jeff Dike <jdike@...toit.com>
CC:	Daniel Walter <dwalter@...gle.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	user-mode-linux-devel@...ts.sourceforge.net,
	user-mode-linux-user@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] um: Remove unused bp stack-frame pointer

On 2014-10-18 16:42, Richard Weinberger wrote:
> Am 18.10.2014 um 16:23 schrieb Manfred Schlaegl:
>> The pointer to bp stack-frame is no longer used. Removed it.
> 
> Good catch!
Thank you.

> 
>> This also removes a corresponding compiler-warning.
> 
> Which warning exactly?

On "normal" (defconfig) builds the warning does not show up because CONFIG_FRAME_POINTER is set.
I've found the unused bp because CONFIG_FRAME_POINTER was not set in my configuration.

  CC      arch/um/kernel/sysrq.o
arch/um/kernel/sysrq.c: In function ‘show_stack’:
arch/um/kernel/sysrq.c:32:29: warning: unused variable ‘bp’ [-Wunused-variable]

It's reproducible on linus-tree (0429fbc0b) by
make mrproper
make tinyconfig ARCH=um SUBARCH=i386
make ARCH=um SUBARCH=i386

> 
> Thanks,
> //richard
> 
best regards,
manfred
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists