On Fri, 17 May 2024 22:31:32 GMT, Leonid Mesnik <lmes...@openjdk.org> wrote:
>> The JvmtiTrace::safe_get_thread_name sometimes crashes when called while >> current thread is in native thread state. >> >> It happens when thread_name is set for tracing from jvmti functions. >> See: >> https://github.com/openjdk/jdk/blob/master/src/hotspot/share/prims/jvmtiEnter.xsl#L649 >> >> >> The setup is called and the thread name is used in tracing before the thread >> transition. There is no good location where this method could be called from >> vm thread_state only. Some functions like raw monitor enter/exit never >> transition in vm state. So sometimes it is needed to call this function from >> native thread state. >> >> The change should affect JVMTI trace mode only (-XX:TraceJVMTI). >> >> Verified by running jvmti/jdi/jdb tests with tracing enabled. > > Leonid Mesnik has updated the pull request incrementally with one additional > commit since the last revision: > > wrong thread state I discussed the issue with @sspitsyn and after this, I updated the function to return something more descriptive in case we can't read thread state. (Easier to understand what happens.) ------------- PR Comment: https://git.openjdk.org/jdk/pull/19275#issuecomment-2136203620
