JDK-8173474 : AArch64: fix reported -Xss minimum
  • Type: Bug
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 9
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2017-01-27
  • Updated: 2017-02-22
  • Resolved: 2017-01-27
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JDK 10 JDK 9
10Fixed 9 b155Fixed
Related Reports
Relates :  
JDK-8175287 - tools/launcher/TooSmallStackSize.java fails with StackOverflowError on linux-arm64
Relates :  
JDK-8173339 - AArch64: Fix minimum stack size computations
Description
Increase posix min_stack values so -Xss reports a valid minimum
Comments
The fix for 8173339 corrected the number of shadow region pages on Aarch64 but omitted to update the minimum (base) thread stack sizes for java and compiler threads os::Posix::_compiler_thread_min_stack_allowed = 32K; os::Posix::_java_thread_min_stack_allowed = 32K; This leads to -Xss reporting a minimum stack of 320K but actually allow programs (such as Hello or the jdk jtreg test SmallStackTest) to suffer a StackOverflowException when run with a stack of 340K. The sizes should be adjusted up (by 40K) so that -Xss adopts a minimum which leads it t reject settings that lead to a StackOverflowException.
27-01-2017