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Bug 2177760

Summary: [RFE] Extend libunwind with a supported library/approach
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Eelco Chaudron <echaudro>
Component: openvswitch3.1Assignee: Ales Musil <amusil>
Status: CLOSED COMPLETED QA Contact: Christian Trautman <ctrautma>
Severity: low Docs Contact:
Priority: unspecified    
Version: FDP 23.ACC: amusil, ctrautma, jhsiao, ralongi
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Last Closed: 2023-09-29 10:03:18 UTC Type: Bug
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Bug Blocks: 2164058    

Description Eelco Chaudron 2023-03-13 14:56:08 UTC 
OVS uses libunwind to report backtraces when one of its daemons crash (when the --monitor options is supplied). For code details see:

https://github.com/openvswitch/ovs/blob/master/lib/backtrace.c


However libunwind is no longer supported by RHEL, and we need to come up with a replacement. Alternatives are:

- glibc's backtrace()
- elfutils/libdw

However, it's not clear if elfutils/libdw can be used to unwind an internal unwinder. Where "internal" (in process) or "external" (attach to a running process, inspect core files, etc).
Comment 2 Ales Musil 2023-03-17 15:06:07 UTC 
Patch posted u/s: https://patchwork.ozlabs.org/project/openvswitch/patch/20230317150225.743812-1-amusil@redhat.com/
Comment 3 Eelco Chaudron 2023-09-29 10:03:18 UTC 
Closing out as this has been accepted upstream.