JDK-2177704 : NUMA allocator: Segfault during startup on Linux
  • Type: Backport
  • Backport of: JDK-6838842
  • Component: hotspot
  • Sub-Component: gc
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • Submitted: 2009-05-08
  • Updated: 2011-03-08
  • Resolved: 2011-03-08
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hs15Fixed
Comments
EVALUATION Approved for JDK 7 M3 build 59.
08-05-2009
SUGGESTED FIX http://cr.openjdk.java.net/~iveresov/6838842/webrev.00
08-05-2009
EVALUATION The semantics of os::free_memory() has changed with the fix for 6541756 (Reduce executable C-heap). This function is used in the NUMA-aware allocator to free pages. Instead, now it does an mmap(PROT_NONE), which causes the VM to trap on the next access. The fix is to change this function to have its original semantics.
08-05-2009