Re: objtool segfault with ORC unwinder enabled

Greg Kroah-Hartman
2018-01-03T11:19:40Z

On Wed, Jan 03, 2018 at 11:49:08AM +0100, Markus wrote:
> Hello!
>
> ORC unwinder is enabled in stable for wider testing but still at least one bug
> is open:
> https://bugzilla.kernel.org/show_bug.cgi?id=197035

Random web links on mailing lists don't help much, please put the
information here in the email.

> objtool will segfault because a NULL pointer is dereferenced.

And how are you reproducing this?

> Is a NULL pointer sym valid?
> If a NULL pointer is invalid, it has to be checked why it is sometimes NULL.

What .config is triggering this problem?

And does this show up on 4.14.11, and 4.15-rc6?

thanks,

greg k-h