[11] RFR(XS) 8202075: Crash when running compiler/codecache/OverflowCodeCacheTest.java (original) (raw)
Vladimir Kozlov vladimir.kozlov at oracle.com
Mon Apr 23 22:53:02 UTC 2018
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https://bugs.openjdk.java.net/browse/JDK-8202075 Note, bug is closed because it has some confidential information, but I put all important information here in RFR:
[1.144s][warning][codecache] CodeCache is full. Compiler has been disabled. [1.144s][warning][codecache] Try increasing the code cache size using -XX:ReservedCodeCacheSize= CodeCache: size=245760Kb used=243996Kb max_used=243996Kb free=1763Kb bounds [0x000000b100000000, 0x000000b10f000000, 0x000000b10f000000] total_blobs=1173 nmethods=77 adapters=840 compilation: disabled (not enough contiguous free space left) #
A fatal error has been detected by the Java Runtime Environment:
EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffb0bdfadf3,
pid=4624, tid=1984 #
JRE version: Java(TM) SE Runtime Environment (11.0) (fastdebug build
11-internal+0)
Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug
11-internal+0-2018-04-20-0015354, mixed mode, tiered, compressed oops, g1 gc, windows-amd64)
Problematic frame:
V [jvm.dll+0x4eadf3] CodeBlob::CodeBlob+0x23
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.dylib+0x3babda] RuntimeBlob::RuntimeBlob(char const*, int, int, int, int)+0x28 V [libjvm.dylib+0x3bb09e] BufferBlob::BufferBlob(char const*, int)+0x20 V [libjvm.dylib+0xc4a779] WhiteBox::allocate_code_blob(int, int)+0x9b V [libjvm.dylib+0xc4a9d7] WB_AllocateCodeBlob+0x23c j sun.hotspot.WhiteBox.allocateCodeBlob(II)J+0
We start testing new C++ compilers (VS and Xcode/clang) and this test crashed in CodeBlob() constructor because, it seems, new compilers don't generate NULL check anymore. We have to add missing check:
diff -r af4b57a556be src/hotspot/share/prims/whitebox.cpp --- a/src/hotspot/share/prims/whitebox.cpp +++ b/src/hotspot/share/prims/whitebox.cpp @@ -1359,7 +1359,9 @@ { MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
- ::new (blob) BufferBlob("WB::DummyBlob", full_size);
- if (blob != NULL) {
::new (blob) BufferBlob("WB::DummyBlob", full_size);- }
}
// Track memory usage statistic after releasing CodeCache_lock
MemoryService::track_code_cache_memory_usage();Normal testing and testing with new C++ compilers.
-- Thanks, Vladimir
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