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[Bug libdw/22452] Failed to obtain CFI data for a OP_call_frame_CFA when looking for func entrypoc in an s390 kernel module
- From: "krebbel at linux dot vnet.ibm.com" <sourceware-bugzilla at sourceware dot org>
- To: elfutils-devel at sourceware dot org
- Date: Mon, 20 Nov 2017 08:11:23 +0000
- Subject: [Bug libdw/22452] Failed to obtain CFI data for a OP_call_frame_CFA when looking for func entrypoc in an s390 kernel module
- Auto-submitted: auto-generated
- References: <bug-22452-10460@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=22452
--- Comment #11 from Andreas Krebbel <krebbel at linux dot vnet.ibm.com> ---
x86 enables generation of .debug_frame by using:
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
in the kernel Makefile. This makes GCC to add ".cfi_sections .debug_frame" to
the assembler output which in turn triggers gas to generate the section.
I don't see a reason why we couldn't do the same for s390. The .eh_frame
section aren't used in the kernel.
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