JDK-8207345 : AArch64: Trampoline generation code reads from uninitialized memory
- Type: Bug
- Component: hotspot
- Sub-Component: compiler
- Affected Version: 11
- Priority: P2
- Status: Closed
- Resolution: Fixed
- CPU: aarch64
- Submitted: 2018-07-16
- Updated: 2021-02-01
- Resolved: 2018-07-17
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Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
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| JDK 11 | JDK 12 | Other |
|---|---|---|
11 b23Fixed  |
12Fixed |
openjdk8u292Fixed |
Related Reports
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Relates :
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Description
At present, the AArch64 back end does this when generating trampolines:
if (far_branches() && !Compile::current()->in_scratch_emit_size()) {
address stub = emit_trampoline_stub(start_offset, entry.target());
This is only correct for C2 compilation. The class Compile is, despite its name, only present in C2, so we must check that we are C2-compiling before calling it.