JDK-6902115 : G1:assert(ignore_max_completed||thread->is_Java_thread()||SafepointSynchronize::is_at_safepoint())
  • Type: Bug
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs17
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2009-11-17
  • Updated: 2013-09-18
  • Resolved: 2011-03-08
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JDK 6 JDK 7 Other
6u21Fixed 7Fixed hs17Fixed
Related Reports
Relates :  
JDK-6899058 - G1: Internal error in ptrQueue.cpp:201 in nightly tests
Description
nsk.stress.jni.gclocker.gcl001
nsk/stress/jni/gclocker/gcl001
See:-

http://sqeweb.sfbay.sun.com/nfs/results/vm/gtee/JDK7/NIGHTLY/VM/2009-11-16/G1_GC_Baseline/vm/solaris-amd64/server/mixed/solaris-amd64_server_mixed_nsk.stress.testlist/ResultDir/gcl001//hs_err_pid14648.log
I added the missing trailing parenthesis... and, umm..., removed the
space between "G1:" and "assert" -- the temptation to create a
nice long synopsis like that without any white-space was too
strong to resist! :-)
Comments
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot/hotspot/rev/2dd52dea6d28
17-01-2010
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/2dd52dea6d28
13-01-2010
EVALUATION Assert is invalid.
21-11-2009
SUGGESTED FIX The fix for the assert is to remove the assert. The concurrent refine threads can re-enqueue cards, potentially filling an update buffer which is then enqueued. The assert trips during the enqueuing of the completed buffer. Also it was noted that the block_start routine was returning an incorrect value. The fix for that is to use a "careful" version of block_start that uses only the block offset table entries themselves.
21-11-2009