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  1. JDK
  2. JDK-8229483

Sinking load out of loop may trigger: assert(found_sfpt) failed: no node in loop that's not input to safepoint

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    Backports

      Description

        (synopsis is provisional, please change as you see fit)

        Found with fuzzing, the bundle is attached. Reproduces with Shenandoah, not with G1.

        $ jdk-jdk/build/linux-x86_64-server-fastdebug/images/jdk/bin/java -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC Test

        # To suppress the following error report, specify this argument
        # after -XX: or in .hotspotrc: SuppressErrorAt=/loopnode.cpp:992
        #
        # A fatal error has been detected by the Java Runtime Environment:
        #
        # Internal Error (/home/shade/trunks/jdk-jdk/src/hotspot/share/opto/loopnode.cpp:992), pid=12041, tid=12050
        # assert(found_sfpt) failed: no node in loop that's not input to safepoint
        #
        # JRE version: OpenJDK Runtime Environment (14.0) (fastdebug build 14-internal+0-adhoc.shade.jdk-jdk)
        # Java VM: OpenJDK 64-Bit Server VM (fastdebug 14-internal+0-adhoc.shade.jdk-jdk, mixed mode, sharing, tiered, compressed oops, shenandoah gc, linux-amd64)
        # Problematic frame:
        # V [libjvm.so+0x11f2cb8] LoopNode::verify_strip_mined(int) const+0x5f8

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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-8231888 Sinking load out of loop may trigger: assert(found_sfpt) failed: no node in loop that's not input to safepoint

            • 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-8234570 Sinking load out of loop may trigger: assert(found_sfpt) failed: no node in loop that's not input to safepoint

            • 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-8245949 Sinking load out of loop may trigger: assert(found_sfpt) failed: no node in loop that's not input to safepoint

            • P3 - Major loss of function.
            • Resolved
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8230798 [lworld] C2 compilation fails with ShouldNotReachHere in verify_strip_mined_scheduling

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8260420 C2 compilation fails with assert(found_sfpt) failed: no node in loop that's not input to safepoint

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8229450 C2 compilation fails with assert(found_sfpt) failed: no node in loop that's not input to safepoint

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8264958 C2 compilation fails with assert "n is later than its clone"

            • P3 - Major loss of function.
            • Resolved

            Enhancement - null JDK-8252372 Check if cloning is required to move loads out of loops in PhaseIdealLoop::split_if_with_blocks_post()

            • P3 - Major loss of function.
            • Resolved

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                roland Roland Westrelin
                shade Aleksey Shipilev
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                  Created:
                  Updated:
                  Resolved: