linux-kernel - Re: [PATCH] delayed kobject release: help find buggy code

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] [day] [month] [year] [list]

Message-ID: <20130627181545.GC12530@flint.arm.linux.org.uk>
Date:	Thu, 27 Jun 2013 19:15:46 +0100
From:	Russell King <rmk@....linux.org.uk>
To:	Greg KH <greg@...ah.com>
Cc:	Linux Kernel List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] delayed kobject release: help find buggy code

On Thu, Jun 27, 2013 at 08:36:12AM -0700, Greg KH wrote:
> On Thu, Jun 27, 2013 at 03:06:14PM +0100, Russell King wrote:
> > Greg,
> > 
> > This is an updated copy of my delayed kobject release debugging patch
> > from 2011, which I notice hasn't hit mainline.  Please consider merging
> > this so that driver authors and subsystem maintainers have a way to test
> > code for kobject refcounting errors.
> > 
> > Moreover, please also consider whether to make the debug option default
> > to 'y' when CONFIG_DEBUG_KERNEL is enabled.
> 
> Nice, I had forgotten about this code.  Have you run it in a while to
> see if things still work well?

Not since I originally posted it, and had other people use it to find
bugs a few years ago.  Since then it's virtually unchanged - the changes
are basically introducing the config option rather than the fixed #define
in the header file enabling it, and changing a pr_info() to a pr_debug().

The patch applied with just a few lines of offset too, and I did build
test it before sending in both enabled and disabled states.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
--
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/