On Wed, 10 Dec 2025 06:00:47 GMT, Serguei Spitsyn <[email protected]> wrote:
> This fixes the test which is unreliable and fails intermittently from time to > time. > The test was failing in the method `checkReentrantLock()` when comparing the > expected state with result from `vt.getState()`. The issue is that the call > to `ThreadListStackTracesTest.reentrantLock.lock()` in a > `ReentrantLockTestTask` can reach waiting state on some class loading but not > on the ReentrantLock. Please see the first comment for test sources details. > The fix is to add a big enough sleep before call to the checkStates(). > > Testing: > - submitted about thousands of mach5 runs of the `ThreadListStackTracesTest` > test runs before and after the fix > - TBD: submit mach5 tiers 1-3 to be completely safe This pull request has now been integrated. Changeset: c46bed72 Author: Serguei Spitsyn <[email protected]> URL: https://git.openjdk.org/jdk/commit/c46bed7292aad21b8cf9defcccac43c010a1f116 Stats: 9 lines in 1 file changed: 7 ins; 0 del; 2 mod 8371502: serviceability/jvmti/vthread/ThreadListStackTracesTest/ThreadListStackTracesTest.java failing Reviewed-by: lmesnik, amenkov ------------- PR: https://git.openjdk.org/jdk/pull/28734
