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Old 05-11-2012, 02:07 PM
Dave Anderson
 
Default : double free in trace extension

----- Original Message -----
>
> >
> > Second, I believe there is a double free in the trace extension.
> > When ftrace_init_pages() fails it will free
> >
> > cpu_buffer->pages
> >
> > and
> >
> > cpu_buffer->linear_pages
> >
> > But when ftrace_init_pages() fails, ftrace_init_buffers() will call
> > ftrace_destroy_buffers() which also free's this space. For me this
> > resulted in a segfault in a malloc() a little later.
> >
> >
>
> Good.
> Acked.
>
> Thanks,
> Lai

The patch is queued for crash-6.0.7.

I've also updated the version found on:

http://people.redhat.com/anderson/extensions.html

Thanks,
Dave

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