Integrated: 8332589: ubsan: unix/native/libjava/ProcessImpl_md.c:562:5: runtime error: null pointer passed as argument 2, which is declared to never be null

[Matthias Baesken]

On Tue, 21 May 2024 14:28:38 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> When building with ubsan enabled (--enable-uban) on Linux x86_64 and doing jtreg tests afterwards I run into this error :
> 
> /jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:562:5: runtime error: null pointer passed as argument 2, which is declared to never be null
>     #0 0x7fd95bec78d8 in spawnChild /jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:562
>     #1 0x7fd95bec78d8 in startChild /jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:612
>     #2 0x7fd95bec78d8 in Java_java_lang_ProcessImpl_forkAndExec /jdk/src/java.base/unix/native/libjava/ProcessImpl_md.c:712
>     #3 0x7fd93797a06d (<unknown module>)
> 
> this is the memcpy call getting an unexpected null pointer :
>     memcpy(buf+offset, c->pdir, sp.dirlen); gets a second parameter null.
> Something similar was discussed and fixed here https://bugs.python.org/issue27570 for Python .
> 
> Similar issue in OpenJDK _ 
> https://bugs.openjdk.org/browse/JDK-8332473
> 8332473: ubsan: growableArray.hpp:290:10: runtime error: null pointer passed as argument 1, which is declared to never be null

This pull request has now been integrated.

Changeset: 16dba04e
Author:    Matthias Baesken <mbaesken at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/16dba04e8dfa871f8056480a42a9baeb24a2fb24
Stats:     12 lines in 1 file changed: 9 ins; 0 del; 3 mod

8332589: ubsan: unix/native/libjava/ProcessImpl_md.c:562:5: runtime error: null pointer passed as argument 2, which is declared to never be null

Reviewed-by: rriggs, mdoerr

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PR: https://git.openjdk.org/jdk/pull/19329