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Differential D26109

dl_iterate_phdr: provide exclusive locking for callback when statically linked
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Authored by kib on Aug 18 2020, 6:16 PM.
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dim
jhb
emaste
cem
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rS364423: dl_iterate_phdr(3): provide exclusive locking for callback when statically…
Summary

Apparently llvm unwinder depends on the external locking for callback.

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rS FreeBSD src repository - subversion
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kib created this revision.Aug 18 2020, 6:16 PM
Herald added a subscriber: imp. · View Herald TranscriptAug 18 2020, 6:16 PM
kib requested review of this revision.Aug 18 2020, 6:16 PM
Harbormaster completed remote builds in B33050: Diff 75959.Aug 18 2020, 6:16 PM
cem accepted this revision.Aug 18 2020, 8:57 PM
This revision is now accepted and ready to land.Aug 18 2020, 8:57 PM
emaste accepted this revision.Aug 18 2020, 9:00 PM

OK with me

kib added a comment.Aug 18 2020, 9:16 PM

So can somebody confirm that this fixes the issue with llvm11 statically linked lld ?

Closed by commit rS364423: dl_iterate_phdr(3): provide exclusive locking for callback when statically… (authored by kib). · Explain WhyAug 20 2020, 3:19 PM
This revision was automatically updated to reflect the committed changes.
kib added a commit: rS364423: dl_iterate_phdr(3): provide exclusive locking for callback when statically….
emaste added a comment.Aug 20 2020, 3:31 PM

I applied this patch as well as a hack to set _LIBUNWIND_USE_FRAME_HEADER_CACHE and the build was successful
https://cirrus-ci.com/build/6731100590440448

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head/
lib/
libc/
gen/
10 lines

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head/lib/libc/gen/dlfcn.c

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