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Diffstat (limited to 'results/classifier/111/debug/1761535')
| -rw-r--r-- | results/classifier/111/debug/1761535 | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/results/classifier/111/debug/1761535 b/results/classifier/111/debug/1761535 new file mode 100644 index 000000000..7fbb57603 --- /dev/null +++ b/results/classifier/111/debug/1761535 @@ -0,0 +1,84 @@ +debug: 0.125 +device: 0.125 +files: 0.107 +other: 0.092 +permissions: 0.079 +PID: 0.078 +semantic: 0.073 +vnc: 0.063 +socket: 0.060 +performance: 0.057 +graphic: 0.043 +network: 0.036 +KVM: 0.030 +boot: 0.030 +debug: 0.660 +PID: 0.096 +files: 0.060 +performance: 0.041 +other: 0.029 +socket: 0.018 +device: 0.018 +permissions: 0.017 +network: 0.017 +semantic: 0.015 +boot: 0.010 +graphic: 0.008 +vnc: 0.007 +KVM: 0.004 + +qemu-aarch64-static docker arm64v8/openjdk coredump + +I am using qemu-aarch64-static to run the arm64v8/openjdk official image on my x86 machine. Using QEMU master, I immediately hit a bug which hangs the container. With Ubuntu default version qemu-aarch64 version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.24) and qemu-aarch64 version 2.11.1 (v2.11.1-dirty) the hang does not take place. + +To reproduce (and get to the core dump): + +$ /tmp/tmptgyg3nvh/qemu-aarch64-static/qemu-aarch64-static -version +qemu-aarch64 version 2.11.91 (v2.12.0-rc1-5-g47d3b60-dirty) +Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers + +$ docker run -it -v /tmp/tmptgyg3nvh/qemu-aarch64-static:/usr/bin/qemu-aarch64-static arm64v8/openjdk /bin/bash +root@bf75cf45d311:/# javac +Usage: javac <options> <source files> +where possible options include: + -g Generate all debugging info +<...snip...> + @<filename> Read options and filenames from file + +qemu: uncaught target signal 11 (Segmentation fault) - core dumped +...TERMINAL HANGS... + + +To get the core dump, In a separate terminal: + +# snapshot the file system of the hung image +$ docker commit $(docker ps -aqf "name=latest_qemu") qemu_coredump + +# connect with known working qemu +$ docker run -t -v /usr/bin/qemu-aarch64-static:/usr/bin/qemu-aarch64-static -i qemu_coredump /bin/bash + +$$ ls -lat +total 10608 +<snip> +-rw-r--r-- 1 root root 10792960 Mar 29 18:02 qemu_bash_20180329-180251_1.core +drwxrwxrwt 5 root root 4096 Mar 29 18:02 tmp +<snip> + +Could you provide a binary that we can use to reproduce, please? (preferably a setup that doesn't require me to figure out how to install and use docker...) + + +I realized I had a javac lying around from last time somebody wanted me to debug a java problem, and I'm also seeing SEGVs with simpler programs like ls (!), so I'll have a look at those and hopefully that will be the same cause as what you're seeing. + + +I think this should be fixed by https://patchwork.ozlabs.org/patch/896295/ + +(incidentally the segfault is in the guest /bin/sh, not in javac or ls.) + + +Now fixed in master, commit 7f0f4208b3a96, and will be in 2.12.0. + + +Many thanks! + +I've just compiled master, and docker/aarch64/openjdk image now works as expected on my x86 machine. + |