RFR: 8332960: ubsan: classListParser.hpp:159:12: runtime error: load of value 2101478704, which is not a valid value for type 'ParseMode'

[Martin Doerr]

On Mon, 27 May 2024 11:07:39 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> When running with ubsan enabled binaries, the following error occurs in some jtreg tests :
> 
> /jdk/src/hotspot/share/cds/classListParser.hpp:159:12: runtime error: load of value 2101478704, which is not a valid value for type 'ParseMode'
>     #0 0x7fff7920f3dc in ClassListParser::ClassListParser(char const*, ClassListParser::ParseMode) (/images/jdk/lib/server/libjvm.so+0x534f3dc)
>     #1 0x7fff7af824b8 in MetaspaceShared::preload_classes(JavaThread*) (/images/jdk/lib/server/libjvm.so+0x70c24b8)
>     #2 0x7fff7af8ffa8 in MetaspaceShared::preload_and_dump_impl(JavaThread*) (/images/jdk/lib/server/libjvm.so+0x70cffa8)
>     #3 0x7fff7af90978 in MetaspaceShared::preload_and_dump() (/images/jdk/lib/server/libjvm.so+0x70d0978)
>     #4 0x7fff7bf4c7f4 in Threads::create_vm(JavaVMInitArgs*, bool*) (/images/jdk/lib/server/libjvm.so+0x808c7f4)
>     #5 0x7fff7a5620b4 in JNI_CreateJavaVM (/images/jdk/lib/server/libjvm.so+0x66a20b4)
>     #6 0x7fff81073068 in InitializeJVM /jdk/src/java.base/share/native/libjli/java.c:1550
>     #7 0x7fff81073068 in JavaMain /jdk/src/java.base/share/native/libjli/java.c:491
>     #8 0x7fff8107ef1c in ThreadJavaMain /jdk/src/java.base/unix/native/libjli/java_md.c:642
>     #9 0x7fff80f99714 in start_thread (/lib64/libpthread.so.0+0x9714)
>     #10 0x7fff8034b774 in __GI___clone (/lib64/libc.so.6+0x13b774)
> 
> Seems _parse_mode is initialized too late.

LGTM.

-------------

Marked as reviewed by mdoerr (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19411#pullrequestreview-2084429943