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  1. JDK
  2. JDK-8274785

ciReplay: Potential crash due to uninitialized Compile::_ilt variable

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    • Subcomponent:
    • Resolved In Build:
      b19

      Description

      The inline tree Compile::_ilt is not initialized directly by the initializer list but only later in Compile::Compile() when calling:

       _ilt = InlineTree::build_inline_tree_root();

      Before this assignment, _ilt contains garbage (i.e. != NULL). When hitting an assert or crash before returning from build_inline_tree_root(), replay compilation is trying to dump the inline tree and fails to notice that the inline tree is still uninitialized. This results in a segmentation fault (tested by adding an artificial assert(false, "asdf")):

      # To suppress the following error report, specify this argument
      # after -XX: or in .hotspotrc: SuppressErrorAt=/compile.cpp:614
      #
      # A fatal error has been detected by the Java Runtime Environment:
      #
      # Internal Error (/home/christian/jdk/open/src/hotspot/share/opto/compile.cpp:614), pid=68690, tid=68698
      # assert(false) failed: asdf
      #
      # JRE version: Java(TM) SE Runtime Environment (18.0) (slowdebug build 18-internal+0-2021-10-04-0649352.christian...)
      # Java VM: Java HotSpot(TM) 64-Bit Server VM (slowdebug 18-internal+0-2021-10-04-0649352.christian..., compiled mode, compressed oops, compressed class ptrs, serial gc, linux-amd64)
      # Problematic frame:
      # V [libjvm.so+0x7aca5c] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, bool, DirectiveSet*)+0x81c
      #
      # No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
      #
      # An error report file with more information is saved as:
      # /home/christian/repro/ciReplay/hs_err_pid68690.log

      [error occurred during error reporting (), id 0xb, SIGSEGV (0xb) at pc=0x00007ff6cef2a748]

      #
      # If you would like to submit a bug report, please visit:
      # https://bugreport.java.com/bugreport/crash.jsp
      #

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              Assignee:
              chagedorn Christian Hagedorn
              Reporter:
              chagedorn Christian Hagedorn
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                Created:
                Updated:
                Resolved: