Bug 1545386
| Summary: | Unresolvable `R_X86_64_NONE` relocation | ||||||||||||
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| Product: | Red Hat Developer Toolset | Reporter: | Alex Turbov <i.zaufi> | ||||||||||
| Component: | binutils | Assignee: | Nick Clifton <nickc> | ||||||||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Martin Cermak <mcermak> | ||||||||||
| Severity: | unspecified | Docs Contact: | Vladimír Slávik <vslavik> | ||||||||||
| Priority: | unspecified | ||||||||||||
| Version: | DTS 7.1 RHEL 7 | CC: | fweimer, kanderso, law, mcermak, mnewsome, mpolacek, mprchlik, ohudlick, vslavik | ||||||||||
| Target Milestone: | alpha | ||||||||||||
| Target Release: | 8.0 | ||||||||||||
| Hardware: | x86_64 | ||||||||||||
| OS: | Linux | ||||||||||||
| URL: | https://stackoverflow.com/questions/48706962/unresolvable-r-x86-64-none-relocation | ||||||||||||
| Whiteboard: | |||||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||||
| Doc Text: |
Cause:
The BFD library would convert any unknown relocation
into a null relocation.
Consequence:
If the strip program was used to strip a binary created
by an assembler that used a newer version of the BFD
library, any relocations unknown to strip would be
silently converted into null relocations, thus breaking
the binary.
Fix:
Modify the BFD library so that it reports unknown
relocations, but it does not modify them.
Result:
Strip will now generate an error message and refuse
to strip any binary containing relocations that it
does not recognise.
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Story Points: | --- | ||||||||||
| Clone Of: | |||||||||||||
| : | 1553842 1653797 (view as bug list) | Environment: | |||||||||||
| Last Closed: | 2020-06-05 08:17:14 UTC | Type: | Bug | ||||||||||
| Regression: | --- | Mount Type: | --- | ||||||||||
| Documentation: | --- | CRM: | |||||||||||
| Verified Versions: | Category: | --- | |||||||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||||
| Embargoed: | |||||||||||||
| Bug Depends On: | |||||||||||||
| Bug Blocks: | 1553842, 1653797, 1653798, 1660547, 1660549 | ||||||||||||
| Attachments: |
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Description
Alex Turbov
2018-02-14 19:41:35 UTC
Created attachment 1396121 [details]
Archive w/ *.o and boost test FW static lib
(In reply to Alex Turbov from comment #2) > Created attachment 1396121 [details] > Archive w/ *.o and boost test FW static lib Where did you obtain libboost_unit_test_framework.a? It looks corrupted. Did you build it yourself? If yes, which toolchain did you use? Do you have build logs? Created attachment 1396250 [details]
Boost build log
From the build log: [19:15:01]W: [Step 8/12] + /usr/lib/rpm/brp-scl-compress /opt/rh/devtoolset-7/root [19:15:01]W: [Step 8/12] + /usr/lib/rpm/brp-strip-static-archive /usr/bin/strip [19:16:40]W: [Step 8/12] /usr/bin/strip: /work/build/BUILDROOT/devtoolset-7-boost-1.65.1-4.el7.centos.x86_64/opt/rh/devtoolset-7/root/usr/lib64/libboost_container.a(global_resource.o): invalid relocation type 42 [19:16:40]W: [Step 8/12] /usr/bin/strip: BFD version 2.25.1-32.base.el7_4.2 assertion fail elf64-x86-64.c:341 There are a couple of bugs here. The RPM build does not use the strip command from DTS. /usr/bin/strip (from binutils 2.25) does not recognize the new R_X86_64_REX_GOTPCRELX relocation that DTS binutils produces. /usr/lib/rpm/brp-strip-static-archive ignores the exit status of /usr/bin/strip, and since that program updates the object file in place, it leaves behind a corrupted file, which is then packaged by RPM. Red Hat Enterprise Linux 7.5 will have a newer system binutils which is able to process the relocation. Another workaround is to add %undefine __brp_strip_static_archive to the spec file, which will produce a static library with debugging information (which I would personally prefer anyway). By the way, could you attach the RPM spec file you use for building Boost? I wonder if there is a way we can switch the debuginfo stripping to DTS strip. Created attachment 1396307 [details]
The RPM spec used to build Boost for DTS-7
Another workaround, detect if RPM builds under the `devtoolset-N` and redefine `_strip` to proper location:
%global __strip %{_bindir}/strip
Just discovered another bug with strip. When it does encounter an unknown reloc, it not only replaces it with a null relocation (which is why the output is corrupt), it also does not return a failure exit status. So even if brp-strip-static-archive is as it should be, that will not resolve this particular problem. :-( I have reported the strip bug(s) upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=22875 Deferring to DTS-8 Fixed. (Actually fixed a while ago, but I forgot to update this BZ). Verified with DTS 9.1, with devtoolset-9-binutils-2.32-16.el7.x86_64. |