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  1. JDK
  2. JDK-8225636

SA can't handle prelinked libraries

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    • b02
    • linux

    Backports

      Description

        I attempted to open the core which is generated by RHEL 6, but it could not .
        I got debug log from SA with LIBSAPROC_DEBUG=1 as below:

        ```
        libsaproc DEBUG: first link map is at 0x3fd6c22188
        libsaproc DEBUG: path /lib64/libpthread.so.0 substituted for /lib64/libpthread.so.0
        libsaproc DEBUG: reading library /lib64/libpthread.so.0 @ 0x0 [ 0x0 ]
        libsaproc DEBUG: address conflict @ 0x0 (existing map size = 129808, size = 93908, flags = 5)
        libsaproc DEBUG: can't read shared object's segments
        ```

        The OS which generated the core is set to enable prelink, and libpthread is prelinked.
        According to GDB implementation, load address of prelinked library should be calculated by offset of link_map.l_ld and the address of .dynamic section.

        https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=gdb/solib-svr4.c;h=2828c96c68355931332c1704035e9a0d8f691fad;hb=HEAD#l285

        I attached the patch for this issue (sa-prelink.patch).

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            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-8226364 SA can't handle prelinked libraries

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8226568 SA can't handle prelinked libraries

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8227204 SA can't handle prelinked libraries

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8243979 SA can't handle prelinked libraries

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8235637 jhsdb jmap from OpenJDK 11.0.5 doesn't work if prelink is enabled

            • P3 - Major loss of function.
            • Resolved

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                ysuenaga Yasumasa Suenaga
                ysuenaga Yasumasa Suenaga
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                  Updated:
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