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Re: [PATCH] libebl: Add ebl_unwind_ret_mask.
- From: Mark Wielaard <mjw at redhat dot com>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Sun, 15 Jun 2014 20:38:20 +0200
- Subject: Re: [PATCH] libebl: Add ebl_unwind_ret_mask.
On Sun, 2014-06-15 at 20:08 +0200, Kurt Roeckx wrote:
> > > Does this fix all the issues on armhf now, including the
> > > backtrace?
> >
> > Yes, you'll need this patch, the "libebl: Add sym_func_value hook" and
> > the "tests: backtrace.c accept __libc_do_syscall as first frame symname"
> > patches. With libc6-dbg installed all tests should PASS with 3 SKIPs,
> > without libc6-dbg installed you should see 6 SKIPs (no FAILs).
> >
> > The other recent patches should be optional, but help for arches which
> > don't have a fully working unwind backend and make the tests a bit more
> > robust and clear when something does go wrong.
>
> Things seem to have worked on arm(hf) now, but I got a bus error
> on sparc instead. Things that changed between the previous upload
> and this one are the 4 patches you made, and that we switched
> to gcc 4.9, eglibc 2.19, ... But I suspect it's one of the
> patches.
Since the sparc backend doesn't have unwinder support it sounds unlikely
one of these patches triggered the bus error. Do you have more
specifics? Which test triggers it, do you have a backtrace? Are there
logs before/after, etc.
Thanks,
Mark