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  1. JDK
  2. JDK-8218966

AArch64: String.compareTo() can read memory after string

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    • 11
    • b22
    • aarch64
    • linux

    Backports

      Description

        There is a bug in stub code of AArch64 String.compareTo() intrinsics. It can be reproduced by below Java code and VM options.

        public class Test {
          public static void main(String[] args) {
            String str1 = "/home/pengfei/backup/Android/projects/ActionBarSherlock/tree/master/actionbarsherlock/res/";
            String str2 = "/home/pengfei/backup/Android/projects/ActionBarSherlock/tree/master/actionbarsherlock/res/\u6d4b\u8bd5.png";
            System.out.println(str1.compareTo(str2));
          }
        }

        // $ java -Xint Test
        // -6
        // $ java -Xcomp -XX:-TieredCompilation -XX:-Inline Test
        // -27979

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8230149 AArch64: String.compareTo() can read memory after string

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8256624 AArch64: String.compareTo() can read memory after string

            • P3 - Major loss of function.
            • Resolved
            relates to

            Enhancement - null JDK-8218748 AARCH64: String::compareTo intrinsic documentation and maintenance improvement

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Open

            Enhancement - null JDK-8202326 AARCH64: optimize string compare intrinsic

            • P3 - Major loss of function.
            • Resolved

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                dpochepk Dmitrij Pochepko
                pli Pengfei Li
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                Dates

                  Created:
                  Updated:
                  Resolved: