RFR: 8360791: [ubsan] Adjust signal handling when using clang
Matthias Baesken
mbaesken at openjdk.org
Fri Jun 27 09:36:27 UTC 2025
A couple of tests e.g. VendorInfoPluginsTest but also some Hotspot like runtime/ErrorHandling/CreateCoredumpOnCrash.java put (write) to special addresses like 0 to provoke crashs.
However this does not work well with ubsan-enabled binaries on the clang based platforms (macOS, AIX).
The mentioned tests generate a SIGSEGV.
Some other tests generate a SIGBUS, e.g.
runtime/memory/ReserveMemory.java
runtime/memory/ReadFromNoaccessArea.java
and this leads to similar issues with ubsan-enabled binaries.
We should adjust the signal handling with the sanitizer options, how to do this is documented here :
https://github.com/google/sanitizers/wiki/SanitizerCommonFlags
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Commit messages:
- JDK-8360791
Changes: https://git.openjdk.org/jdk/pull/26015/files
Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26015&range=00
Issue: https://bugs.openjdk.org/browse/JDK-8360791
Stats: 6 lines in 1 file changed: 5 ins; 0 del; 1 mod
Patch: https://git.openjdk.org/jdk/pull/26015.diff
Fetch: git fetch https://git.openjdk.org/jdk.git pull/26015/head:pull/26015
PR: https://git.openjdk.org/jdk/pull/26015
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