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  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:   Tue, 12 Feb 2019 14:00:30 +0100
From:   Petr Mladek <>
To:     Joe Perches <>
Cc:     Andy Shevchenko <>,
        Rasmus Villemoes <>,
        Linus Torvalds <>,
        "Tobin C . Harding" <>,
        Andrew Morton <>,
        Michal Hocko <>,
        Sergey Senozhatsky <>,
        Steven Rostedt <>,
        Sergey Senozhatsky <>,
Subject: Re: [PATCH v6 5/9] vsprintf: Factor out %pV handler as va_format()

On Fri 2019-02-08 09:11:17, Joe Perches wrote:
> On Fri, 2019-02-08 at 16:23 +0100, Petr Mladek wrote:
> > Move the code from the long pointer() function. We are going to improve
> > error handling that will make it more complicated.
> > 
> > This patch does not change the existing behavior.
> But doesn't this increase stack use?
> %pV is recursive and increasing the stack is undesired
> for this use.

%pV handler is stack sensitive because the entire vsnprintf()
machinery is called recursively. This one extra call does
not make it much worse.

Best Regards,

Powered by blists - more mailing lists