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6415680: (bf) MappedByteBuffer.get() can provoke crash with EXCEPTION_IN_PAGE_ERROR

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Made changes in topLevelExceptionFilter for handling unsafe single value invalid memory access failures, equivalent of JDK-4454115.

Reviewed-by: dholmes, dlong
This commit is contained in:
Jamsheed Mohammed C M 2017-11-15 00:49:57 -08:00
parent 2fa7cd4d09
commit 4cd55d3fd3
1 changed files with 14 additions and 0 deletions
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14
src/hotspot/os/windows/os_windows.cpp
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@ -2487,6 +2487,20 @@ LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) {
} // /EXCEPTION_ACCESS_VIOLATION
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
if (exception_code == EXCEPTION_IN_PAGE_ERROR) {
CompiledMethod* nm = NULL;
JavaThread* thread = (JavaThread*)t;
if (in_java) {
CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
nm = (cb != NULL) ? cb->as_compiled_method_or_null() : NULL;
}
if ((thread->thread_state() == _thread_in_vm &&
thread->doing_unsafe_access()) ||
(nm != NULL && nm->has_unsafe_access())) {
return Handle_Exception(exceptionInfo, SharedRuntime::handle_unsafe_access(thread, (address)Assembler::locate_next_instruction(pc)));
}
}
if (in_java) {
switch (exception_code) {
case EXCEPTION_INT_DIVIDE_BY_ZERO: