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Differential D31046

Don't instrument the rdtsc ifunc when building with ASAN/UBSAN
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Authored by arichardson on Jul 5 2021, 10:52 AM.
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kib
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rGf0712132b68b: Don't instrument the rdtsc ifunc when building with ASAN/UBSAN
Summary

The ifunc resolver is called before the sanitizer runtime is initialized,
so any instrumentation results in an immediate crash.

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rG FreeBSD src repository
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Event Timeline

arichardson created this revision.Jul 5 2021, 10:52 AM
Herald added a subscriber: imp. · View Herald TranscriptJul 5 2021, 10:52 AM
arichardson requested review of this revision.Jul 5 2021, 10:52 AM
Harbormaster completed remote builds in B40294: Diff 91777.Jul 5 2021, 10:52 AM
arichardson added a parent revision: D31043: Add build system support for ASAN+UBSAN instrumentation.Jul 5 2021, 10:53 AM
arichardson retitled this revision from Don't instrument the rdtsc ifunction when building with ASAN/UBSAN to Don't instrument the rdtsc ifunc when building with ASAN/UBSAN.Jul 5 2021, 1:01 PM
arichardson edited the summary of this revision. (Show Details)
arichardson added a reviewer: kib.
kib accepted this revision.Jul 5 2021, 1:07 PM
This revision is now accepted and ready to land.Jul 5 2021, 1:07 PM
Closed by commit rGf0712132b68b: Don't instrument the rdtsc ifunc when building with ASAN/UBSAN (authored by arichardson). · Explain WhyAug 2 2021, 1:35 PM
This revision was automatically updated to reflect the committed changes.
arichardson added a commit: rGf0712132b68b: Don't instrument the rdtsc ifunc when building with ASAN/UBSAN.

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lib/
libc/
x86/
sys/
8 lines

Diff 93115

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lib/libc/x86/sys/Makefile.inc

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