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  linux-cve-announce  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:	Thu, 18 Feb 2016 10:21:48 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	Florian Schilhabel <florian.c.schilhabel@...glemail.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-arm-kernel@...ts.infradead.org,
	Luis de Bethencourt <luisbg@....samsung.com>,
	Joshua Clayton <stillcompiling@...il.com>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: rtl8712: reduce stack usage

On Wednesday 17 February 2016 20:20:15 Larry Finger wrote:
> > ---
> >   drivers/staging/rtl8712/rtl871x_ioctl_linux.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> As there is no reason for translate_scan() to be inlined, this patch seems 
> reasonable The largest user of stack likely comes from the line "struct iw_event 
> iwe". Changing that to a pointer, and using kalloc to acquire the space would 
> likely clear the compile message, but that would require many more changes.
> 
> Acked-by: Larry Finger <Larry.Finger@...inger.net>
> 
> 

Thanks!

I believe that the problem is the combination of "struct iw_event"
and the two buffers "u8 wpa_ie[255], rsn_ie[255];" and "u8 wps_ie[512];".
Just to document this better: if we ever decide to use a dynamic allocation,
I would allocate all of the above together.

	Arnd

Powered by blists - more mailing lists