[Bug 14391] use after free of struct powernow_k8_data

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http://bugzilla.kernel.org/show_bug.cgi?id=14391


Rusty Russell <rusty@xxxxxxxxxxxxxxx> changed:

           What    |Removed                     |Added
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                 CC|                            |rusty@xxxxxxxxxxxxxxx




--- Comment #3 from Rusty Russell <rusty@xxxxxxxxxxxxxxx>  2009-11-17 06:02:58 ---
I can't see how my patch would break this, but cpufreq keeps surprising me :(

There's no debug prints in the ->exit function, so I have no idea what cpu
that's being called for, or when.

But this is suspicious, on the resume side:

   cpufreq-core: CPU already managed, adding link

This path calls ->exit in powernow_k8.c for cpu 1.  (See
cpufreq_add_dev_policy)

This doesn't happy on initial boot, and I'm not sure it should be happening
now.

Dave?

Thanks,
Rusty.

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