[PATCH v8 8/8] livepatch: Detect offset for the ftrace location during build
Kamalesh Babulal
kamalesh at linux.vnet.ibm.com
Tue Feb 16 21:30:30 AEDT 2016
* Torsten Duwe <duwe at lst.de> [2016-02-16 09:23:02]:
> On Tue, Feb 16, 2016 at 11:17:02AM +0530, Kamalesh Babulal wrote:
> > * Petr Mladek <pmladek at suse.com> [2016-02-12 17:45:17]:
> > > int test(int a)
> > > {
> > > + printk("%d\n", a);
> > > return ++a;
> > > }
> >
> > Thanks. This workaround, helped to load sample livepatch module.
>
> N.b.: if you try to livepatch/trace such a leaf function without
> global dependencies, it will crash if that function got called with
> a different TOC value. Hence this whole testing.
>
I am running out of ideas on how to generate this crash, any pointers
will be helpful.
> You may alternatively try my gcc patch ;-)
Thank you. I will give the patch a try.
Regards,
Kamalesh
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