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

From: Russell King
Date: Thu Jun 27 2013 - 14:16:04 EST


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:
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