Since ~ middle of May 2024 we see a number of asserts on Windows in the test runtime/memory/RunUnitTestsConcurrently.java (failures occur with current JDK11, on Windows Server 2016).
Asserts are like this :


# Internal Error (d:\priv\jenkins\client-home\workspace\openjdk-11u-windows_x86_64-dbg\jdk\src\hotspot\os\windows\os_windows.cpp:3188), pid=10612, tid=7116
# assert(aligned_base != 0LL) failed: Did not manage to re-map after 20 attempts?

Stack: [0x000000a2d3c00000,0x000000a2d3d00000]
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [jvm.dll+0xae8de1] os::platform_print_native_stack+0xf1 (os_windows_x86.cpp:370)
V [jvm.dll+0xcde83c] VMError::report+0xebc (vmerror.cpp:716)
V [jvm.dll+0xce0078] VMError::report_and_die+0x8c8 (vmerror.cpp:1530)
V [jvm.dll+0xce0834] VMError::report_and_die+0x64 (vmerror.cpp:1303)
V [jvm.dll+0x54364e] report_vm_error+0x7e (debug.cpp:250)
V [jvm.dll+0xae6655] os::reserve_memory_aligned+0x1b5 (os_windows.cpp:3188)
V [jvm.dll+0xcd9160] ReservedSpace::initialize+0x3c0 (virtualspace.cpp:212)
V [jvm.dll+0xcda78e] TestReservedSpace::test_reserved_space3+0x22e (virtualspace.cpp:1154)
V [jvm.dll+0xcda3de] TestReservedSpace::test_reserved_space3+0x7e (virtualspace.cpp:1206)
V [jvm.dll+0xcf909c] WB_RunMemoryUnitTests+0x22c (whitebox.cpp:240)
C 0x0000020acc0381df

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
J 294 sun.hotspot.WhiteBox.runMemoryUnitTests()V (0 bytes) @ 0x0000020acc038147 [0x0000020acc0380e0+0x0000000000000067]
j RunUnitTestsConcurrently$Worker.run()V+17
j java.lang.Thread.run()V+11 java.base@11.0.25-internal
v ~StubRoutines::call_stub