Re: LTS perf unwind fix

Hi Greg,

Please apply these two commits to 5.4.y (other LTSes are probably fine too, but I didn't test):

commit bf53fc6b5f415cddc7118091cb8fd6a211b2320d Author: Jan Kratochvil jan.kratochvil@redhat.com Date: Fri Dec 4 09:17:02 2020 -0300

perf unwind: Fix separate debug info files when using elfutils' libdw's unwinder

commit 4e1481445407b86a483616c4542ffdc810efb680 Author: Dave Rigby d.rigby@me.com Date: Thu Feb 18 16:56:54 2021 +0000

perf unwind: Set userdata for all __report_module() paths

[...]

Fixes: bf53fc6b5f41 ("perf unwind: Fix separate debug info files when using elfutils' libdw's unwinder")

These commits fix some broken backtraces when using the perf tool.

Thanks! -Tommi