Hello all,
I have been attempting to build OpenJDK-11 for an ARMv7-A system using Cortex-A7. Output of uname -a for this system is Linux sun6i 3.3.0 #125 SMP PREEMPT Fri Feb 5 07:04:03 CST 2021 armv7l GNU/Linux I am at the point where I am unsure where to proceed or what to change, and haven't been able to find a solution anywhere thus far to build a client version of OpenJDK-11. If there's any additional information I can/should provide, please let me know. I am using the source from https://hg.openjdk.java.net/jdk/jdk11. Previously I have attempted a toolchain using buildroot with the 3.4 sunxi kernel with hard float, 3.3 release kernel with softfp and hard float, both with glibc 2.18, and attempted binutils 2.23.2 and 2.32 on both, and both built on Ubuntu 20.04. As well as a yocto build with a bananapi config using meta-openembedded, meta-open-oe, and meta-sunxi on branch fido built on ubuntu 14.04. The most success I've had was creating a buildroot toolchain with the release 3.3 kernel, glibc 2.18, binutils 2.23.2 and using that I was able to make a working jre-legacy-image and jdk-image for a zero build but every time I try the same on either the client or server variant it crashes immediately, usually with the following message: # /usr/lib/jvm/jdk11/client/jre/bin/java -version # # A fatal error has been detected by the Java Runtime Environment: # # SIGILL (0x4) at pc=0xb43e2f90, pid=1572, tid=1573 # # JRE version: (11.0) (build ) # Java VM: OpenJDK Client VM (11-internal+0-adhoc.johnc.jdk11, mixed mode, serial gc, linux-) # Problematic frame: # j java.lang.ThreadGroup.add(Ljava/lang/ThreadGroup;)V+20 java.base # # Core dump will be written. Default location: /home/core # # An error report file with more information is saved as: # /home/hs_err_pid1572.log Could not load hsdis-arm.so; library not loadable; PrintAssembly is disabled # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # Aborted (core dumped) Occasionally it would give me a segment of a java stack trace giving me a NullPointerException at java.base/java.lang.ThreadGroup.java line 812. This particular bit happens infrequently, and I wasn't able to recreate it to get something to paste in here, but I did have it down as line 812. I am using the following to configure it: bash configure --target=arm-unknown-linux-gnueabihf --build=x86_64-linux --host=arm-unknown-linux-gnueabihf --with-native-debug-symbols=none --disable-warnings-as-errors --with-abi-profile=arm-vfp-hflt --disable-ccache --with-sysroot=/opt/buildroot-2021.02.4/output/host/arm-buildroot-linux-gnueabihf/sysroot/ --with-toolchain-path=/opt/x-tools/arm-unknown-linux-gnueabihf/bin --with-build-jdk=/opt/jdk11/build/linux-x86_64-normal-server-release/images/jdk --with-x=/opt/buildroot-2021.02.4/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr --with-cups=/opt/buildroot-2021.02.4/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr --with-fontconfig=/opt/buildroot-2021.02.4/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr --with-freetype-lib=/opt/buildroot-2021.02.4/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib --with-freetype-include=/opt/buildroot-2021.02.4/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/include --with-alsa=/opt/buildroot-2021.02.4/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr --with-stdc++lib=dynamic --with-extra-cxxflags='-Os -pipe -g -feliminate-unused-debug-types -fcommon -fno-delete-null-pointer-checks -fvisibility-inlines-hidden -march=armv7-a -mfpu=vfpv3 -mfloat-abi=hard' --with-extra-cflags='-Os -pipe -g -feliminate-unused-debug-types -fcommon -fno-delete-null-pointer-checks -march=armv7-a -mfpu=vfpv3 -mfloat-abi=hard' --with-extra-ldflags='-Wl,-Os -Wl,--hash-style=gnu -Wl,--as-needed' --with-jobs=8 --with-jvm-variants=client The output of hs_err_pid1572.log is # cat /home/hs_err_pid1572.log # # A fatal error has been detected by the Java Runtime Environment: # # SIGILL (0x4) at pc=0xb43e2f90, pid=1572, tid=1573 # # JRE version: (11.0) (build ) # Java VM: OpenJDK Client VM (11-internal+0-adhoc.johnc.jdk11, mixed mode, serial gc, linux-) # Problematic frame: # j java.lang.ThreadGroup.add(Ljava/lang/ThreadGroup;)V+20 java.base # # Core dump will be written. Default location: /home/core # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # --------------- S U M M A R Y ------------ Command Line: Host: ARMv7 Processor rev 4 (v7l), 2 cores, 794M, Buildroot 2017.08 Time: Fri Oct 8 13:11:24 2021 EDT elapsed time: 0 seconds (0d 0h 0m 0s) --------------- T H R E A D --------------- Current thread (0xb6509c00): JavaThread "Unknown thread" [_thread_in_Java, id=1573, stack(0xb665f000,0xb66af000)] Stack: [0xb665f000,0xb66af000], sp=0xb66ad938, free space=314k Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code) j java.lang.ThreadGroup.add(Ljava/lang/ThreadGroup;)V+20 java.base j java.lang.ThreadGroup.<init>(Ljava/lang/Void;Ljava/lang/ThreadGroup;Ljava/lang/String;)V+37 java.base j java.lang.ThreadGroup.<init>(Ljava/lang/ThreadGroup;Ljava/lang/String;)V+7 java.base v ~StubRoutines::call_stub C 0x00000000 siginfo: si_signo: 4 (SIGILL), si_code: 1 (ILL_ILLOPC), si_addr: 0xb43e2f90 Register to memory mapping: r0 = 0xb66ad914 0xb66ad914 is pointing into the stack for thread: 0xb6509c00 r1 = 0x00000003 0x00000003 is an unknown value r2 = 0x00000028 0x00000028 is an unknown value r3 = 0xa7a05af0 0xa7a05af0 is an oop java.lang.ThreadGroup {0xa7a05af0} - klass: 'java/lang/ThreadGroup' r4 = 0x84000009 0x84000009 is an unknown value r5 = 0x00000008 0x00000008 is an unknown value r6 = 0xb6d51584 0xb6d51584: <offset 0x00550584> in /usr/lib/jvm/jdk11/client/jre/lib/client/libjvm.so at 0xb6801000 r7 = 0xa75dcdcc 0xa75dcdcc is pointing into metadata r8 = 0xb66ad978 0xb66ad978 is pointing into the stack for thread: 0xb6509c00 r9 = 0xa75dce30 {method} {0xa75dce30} 'add' '(Ljava/lang/ThreadGroup;)V' in 'java/lang/ThreadGroup' r10 = 0xb6509c00 0xb6509c00 is a thread fp = 0xb66ad964 0xb66ad964 is pointing into the stack for thread: 0xb6509c00 r12 = 0xb66ad938 0xb66ad938 is pointing into the stack for thread: 0xb6509c00 sp = 0xb66ad938 0xb66ad938 is pointing into the stack for thread: 0xb6509c00 lr = 0xb6a5a64b 0xb6a5a64b: <offset 0x0025964b> in /usr/lib/jvm/jdk11/client/jre/lib/client/libjvm.so at 0xb6801000 pc = 0xb43e2f90 0xb43e2f90 is at code_begin+400 in an Interpreter codelet getfield 180 getfield [0xb43e2e00, 0xb43e2ff0] 496 bytes Registers: r0 = 0xb66ad914 r1 = 0x00000003 r2 = 0x00000028 r3 = 0xa7a05af0 r4 = 0x84000009 r5 = 0x00000008 r6 = 0xb6d51584 r7 = 0xa75dcdcc r8 = 0xb66ad978 r9 = 0xa75dce30 r10 = 0xb6509c00 fp = 0xb66ad964 r12 = 0xb66ad938 sp = 0xb66ad938 lr = 0xb6a5a64b pc = 0xb43e2f90 cpsr = 0x20030010 Top of Stack: (sp=0xb66ad938) 0xb66ad938: 00000001 a7a05af0 b66ad938 a75dcdcc 0xb66ad948: b66ad978 a765dd98 00000000 a7a01ac8 0xb66ad958: a75dce30 00000000 b66ad974 b66ad9a0 0xb66ad968: b43d9bb0 00000000 a7a05af0 a7a05b80 0xb66ad978: a7a05af0 b66ad97c a75dbddd b66ad9b4 0xb66ad988: a765dd98 00000000 a7a01ac8 a75dbde8 0xb66ad998: b66ad974 b66ad9a8 b66ad9dc b43d9bb0 0xb66ad9a8: a7a05b50 a7a05af0 00000000 a7a05b80 Instructions: (pc=0xb43e2f90) 0xb43e2f70: e5c70000 ea000014 e083c002 e89c0003 0xb43e2f80: e92d0003 e3a000ce e5c70000 ea00000e 0xb43e2f90: f7fbc402 e52d0004 e3a000cb e5c70000 0xb43e2fa0: ea000009 e92ddfff e59f0004 e1a0100d getfield 180 getfield [0xb43e2e00, 0xb43e2ff0] 496 bytes --------------- P R O C E S S --------------- Threads class SMR info: _java_thread_list=0xb6557628, length=1, elements={ 0xb6509c00 } Java Threads: ( => current thread ) =>0xb6509c00 JavaThread "Unknown thread" [_thread_in_Java, id=1573, stack(0xb665f000,0xb66af000)] Other Threads: 0xb6557800 VMThread "VM Thread" [stack: 0xb422e000,0xb42ae000] [id=1574] Threads with active compile tasks: VM state:not at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: None Heap: def new generation total 4352K, used 79K [0xa7a00000, 0xa7ea0000, 0xabca0000) eden space 3968K, 2% used [0xa7a00000, 0xa7a13d80, 0xa7de0000) from space 384K, 0% used [0xa7de0000, 0xa7de0000, 0xa7e40000) to space 384K, 0% used [0xa7e40000, 0xa7e40000, 0xa7ea0000) tenured generation total 9600K, used 0K [0xabca0000, 0xac600000, 0xb4200000) the space 9600K, 0% used [0xabca0000, 0xabca0000, 0xabca0200, 0xac600000) Metaspace used 680K, capacity 2200K, committed 2200K, reserved 4400K Card table byte_map: [0xb42f1000,0xb4356000] _byte_map_base: 0xb3db4000 Polling page: 0xb6ee5000 Metaspace: Usage: 2.15 MB capacity, 680.58 KB ( 31%) used, 1.48 MB ( 69%) free+waste, 40 bytes ( <1%) overhead. Virtual space: 4.30 MB reserved, 2.15 MB ( 50%) committed Chunk freelists: 0 bytes CodeCache: size=32768Kb used=181Kb max_used=189Kb free=32586Kb bounds [0xb43d6000, 0xb4406000, 0xb63d6000] total_blobs=73 nmethods=0 adapters=37 compilation: enabled stopped_count=0, restarted_count=0 full_count=0 Compilation events (0 events): No events GC Heap History (0 events): No events Deoptimization events (0 events): No events Classes redefined (0 events): No events Internal exceptions (0 events): No events Events (10 events): Event: 0.137 loading class java/lang/NullPointerException done Event: 0.137 loading class java/lang/ArithmeticException Event: 0.137 loading class java/lang/ArithmeticException done Event: 0.146 Thread 0xb6509c00 Thread added: 0xb6509c00 Event: 0.149 loading class java/io/ObjectStreamField Event: 0.149 loading class java/io/ObjectStreamField done Event: 0.149 loading class java/lang/String$CaseInsensitiveComparator Event: 0.150 loading class java/util/Comparator Event: 0.150 loading class java/util/Comparator done Event: 0.151 loading class java/lang/String$CaseInsensitiveComparator done Dynamic libraries: 00008000-00009000 r-xp 00000000 b3:01 273474 /usr/lib/jvm/jdk11/client/jre/bin/java 00010000-00011000 rw-p 00000000 b3:01 273474 /usr/lib/jvm/jdk11/client/jre/bin/java 00011000-00032000 rw-p 00000000 00:00 0 [heap] a7400000-a7421000 rw-p 00000000 00:00 0 a7421000-a7500000 ---p 00000000 00:00 0 a7559000-a77da000 rw-p 00000000 00:00 0 a77da000-a7a00000 ---p 00000000 00:00 0 a7a00000-a7ea0000 rw-p 00000000 00:00 0 a7ea0000-abca0000 ---p 00000000 00:00 0 abca0000-ac600000 rw-p 00000000 00:00 0 ac600000-b4200000 ---p 00000000 00:00 0 b422d000-b422e000 ---p 00000000 00:00 0 b422e000-b42b3000 rw-p 00000000 00:00 0 b42b3000-b42f1000 ---p 00000000 00:00 0 b42f1000-b42f4000 rw-p 00000000 00:00 0 b42f4000-b4312000 ---p 00000000 00:00 0 b4312000-b4317000 rw-p 00000000 00:00 0 b4317000-b4355000 ---p 00000000 00:00 0 b4355000-b4357000 rw-p 00000000 00:00 0 b4357000-b43d6000 ---p 00000000 00:00 0 b43d6000-b4406000 rwxp 00000000 00:00 0 b4406000-b63d6000 ---p 00000000 00:00 0 b63d6000-b64ec000 r--s 00000000 b3:01 273445 /usr/lib/jvm/jdk11/client/jre/lib/modules b64ec000-b64f7000 r-xp 00000000 b3:01 272372 /lib/arm-linux-gnueabihf/libnss_files-2.18.so b64f7000-b64fe000 ---p 0000b000 b3:01 272372 /lib/arm-linux-gnueabihf/libnss_files-2.18.so b64fe000-b64ff000 r--p 0000a000 b3:01 272372 /lib/arm-linux-gnueabihf/libnss_files-2.18.so b64ff000-b6500000 rw-p 0000b000 b3:01 272372 /lib/arm-linux-gnueabihf/libnss_files-2.18.so b6500000-b655c000 rw-p 00000000 00:00 0 b655c000-b6600000 ---p 00000000 00:00 0 b6603000-b6606000 r-xp 00000000 b3:01 273430 /usr/lib/jvm/jdk11/client/jre/lib/libjimage.so b6606000-b660d000 ---p 00003000 b3:01 273430 /usr/lib/jvm/jdk11/client/jre/lib/libjimage.so b660d000-b660e000 rw-p 00002000 b3:01 273430 /usr/lib/jvm/jdk11/client/jre/lib/libjimage.so b660e000-b6613000 r-xp 00000000 b3:01 273444 /usr/lib/jvm/jdk11/client/jre/lib/libzip.so b6613000-b661a000 ---p 00005000 b3:01 273444 /usr/lib/jvm/jdk11/client/jre/lib/libzip.so b661a000-b661b000 rw-p 00004000 b3:01 273444 /usr/lib/jvm/jdk11/client/jre/lib/libzip.so b661b000-b6635000 r-xp 00000000 b3:01 273466 /usr/lib/jvm/jdk11/client/jre/lib/libjava.so b6635000-b663d000 ---p 0001a000 b3:01 273466 /usr/lib/jvm/jdk11/client/jre/lib/libjava.so b663d000-b663e000 rw-p 0001a000 b3:01 273466 /usr/lib/jvm/jdk11/client/jre/lib/libjava.so b663e000-b6647000 r-xp 00000000 b3:01 273443 /usr/lib/jvm/jdk11/client/jre/lib/libverify.so b6647000-b664f000 ---p 00009000 b3:01 273443 /usr/lib/jvm/jdk11/client/jre/lib/libverify.so b664f000-b6650000 rw-p 00009000 b3:01 273443 /usr/lib/jvm/jdk11/client/jre/lib/libverify.so b6650000-b6656000 r-xp 00000000 b3:01 272378 /lib/arm-linux-gnueabihf/librt-2.18.so b6656000-b665d000 ---p 00006000 b3:01 272378 /lib/arm-linux-gnueabihf/librt-2.18.so b665d000-b665e000 r--p 00005000 b3:01 272378 /lib/arm-linux-gnueabihf/librt-2.18.so b665e000-b665f000 rw-p 00006000 b3:01 272378 /lib/arm-linux-gnueabihf/librt-2.18.so b665f000-b6662000 ---p 00000000 00:00 0 b6662000-b66af000 rw-p 00000000 00:00 0 b66af000-b66ce000 r-xp 00000000 b3:01 272360 /lib/arm-linux-gnueabihf/libgcc_s.so.1 b66ce000-b66d5000 ---p 0001f000 b3:01 272360 /lib/arm-linux-gnueabihf/libgcc_s.so.1 b66d5000-b66d6000 rw-p 0001e000 b3:01 272360 /lib/arm-linux-gnueabihf/libgcc_s.so.1 b66d6000-b6740000 r-xp 00000000 b3:01 272366 /lib/arm-linux-gnueabihf/libm-2.18.so b6740000-b6748000 ---p 0006a000 b3:01 272366 /lib/arm-linux-gnueabihf/libm-2.18.so b6748000-b6749000 r--p 0006a000 b3:01 272366 /lib/arm-linux-gnueabihf/libm-2.18.so b6749000-b674a000 rw-p 0006b000 b3:01 272366 /lib/arm-linux-gnueabihf/libm-2.18.so b674a000-b67e6000 r-xp 00000000 b3:01 264327 /usr/lib/arm-linux-gnueabihf/libstdc++.so.6.0.20 b67e6000-b67f5000 ---p 0009c000 b3:01 264327 /usr/lib/arm-linux-gnueabihf/libstdc++.so.6.0.20 b67f5000-b67f9000 r--p 0009b000 b3:01 264327 /usr/lib/arm-linux-gnueabihf/libstdc++.so.6.0.20 b67f9000-b67fb000 rw-p 0009f000 b3:01 264327 /usr/lib/arm-linux-gnueabihf/libstdc++.so.6.0.20 b67fb000-b6801000 rw-p 00000000 00:00 0 b6801000-b6d0a000 r-xp 00000000 b3:01 273449 /usr/lib/jvm/jdk11/client/jre/lib/client/libjvm.so b6d0a000-b6d11000 ---p 00509000 b3:01 273449 /usr/lib/jvm/jdk11/client/jre/lib/client/libjvm.so b6d11000-b6d26000 r--p 00508000 b3:01 273449 /usr/lib/jvm/jdk11/client/jre/lib/client/libjvm.so b6d26000-b6d3b000 rw-p 0051d000 b3:01 273449 /usr/lib/jvm/jdk11/client/jre/lib/client/libjvm.so b6d3b000-b6d62000 rw-p 00000000 00:00 0 b6d62000-b6d77000 r-xp 00000000 b3:01 272376 /lib/arm-linux-gnueabihf/libpthread-2.18.so b6d77000-b6d7e000 ---p 00015000 b3:01 272376 /lib/arm-linux-gnueabihf/libpthread-2.18.so b6d7e000-b6d7f000 r--p 00014000 b3:01 272376 /lib/arm-linux-gnueabihf/libpthread-2.18.so b6d7f000-b6d80000 rw-p 00015000 b3:01 272376 /lib/arm-linux-gnueabihf/libpthread-2.18.so b6d80000-b6d82000 rw-p 00000000 00:00 0 b6d82000-b6d94000 r-xp 00000000 b3:01 273131 /lib/arm-linux-gnueabihf/libz.so.1.2.11 b6d94000-b6d9b000 ---p 00012000 b3:01 273131 /lib/arm-linux-gnueabihf/libz.so.1.2.11 b6d9b000-b6d9c000 rw-p 00011000 b3:01 273131 /lib/arm-linux-gnueabihf/libz.so.1.2.11 b6d9c000-b6ec8000 r-xp 00000000 b3:01 272356 /lib/arm-linux-gnueabihf/libc-2.18.so b6ec8000-b6ecf000 ---p 0012c000 b3:01 272356 /lib/arm-linux-gnueabihf/libc-2.18.so b6ecf000-b6ed1000 r--p 0012b000 b3:01 272356 /lib/arm-linux-gnueabihf/libc-2.18.so b6ed1000-b6ed2000 rw-p 0012d000 b3:01 272356 /lib/arm-linux-gnueabihf/libc-2.18.so b6ed2000-b6ed5000 rw-p 00000000 00:00 0 b6edd000-b6ee5000 rw-s 00000000 00:0c 8272 /tmp/hsperfdata_root/1572 b6ee5000-b6ee6000 r--p 00000000 00:00 0 b6ee6000-b6ef0000 r-xp 00000000 b3:01 273436 /usr/lib/jvm/jdk11/client/jre/lib/jli/libjli.so b6ef0000-b6ef7000 ---p 0000a000 b3:01 273436 /usr/lib/jvm/jdk11/client/jre/lib/jli/libjli.so b6ef7000-b6ef8000 rw-p 00009000 b3:01 273436 /usr/lib/jvm/jdk11/client/jre/lib/jli/libjli.so b6ef8000-b6f0f000 r-xp 00000000 b3:01 260047 /lib/arm-linux-gnueabihf/ld-2.19.so b6f0f000-b6f11000 rw-p 00000000 00:00 0 b6f11000-b6f13000 r-xp 00000000 b3:01 272358 /lib/arm-linux-gnueabihf/libdl-2.18.so b6f13000-b6f1a000 ---p 00002000 b3:01 272358 /lib/arm-linux-gnueabihf/libdl-2.18.so b6f1a000-b6f1b000 r--p 00001000 b3:01 272358 /lib/arm-linux-gnueabihf/libdl-2.18.so b6f1b000-b6f1c000 rw-p 00002000 b3:01 272358 /lib/arm-linux-gnueabihf/libdl-2.18.so b6f1c000-b6f1f000 rw-p 00000000 00:00 0 b6f1f000-b6f20000 r--p 00017000 b3:01 260047 /lib/arm-linux-gnueabihf/ld-2.19.so b6f20000-b6f21000 rw-p 00018000 b3:01 260047 /lib/arm-linux-gnueabihf/ld-2.19.so befae000-befcf000 rw-p 00000000 00:00 0 [stack] ffff0000-ffff1000 r-xp 00000000 00:00 0 [vectors] VM Arguments: java_command: <unknown> java_class_path (initial): <not set> Launcher Type: SUN_STANDARD [Global flags] size_t InitialHeapSize = 14680064 {product} {ergonomic} size_t MaxHeapSize = 209715200 {product} {ergonomic} size_t MaxNewSize = 69861376 {product} {ergonomic} size_t MinHeapDeltaBytes = 131072 {product} {ergonomic} size_t NewSize = 4849664 {product} {ergonomic} uintx NonProfiledCodeHeapSize = 0 {pd product} {ergonomic} size_t OldSize = 9830400 {product} {ergonomic} uintx ProfiledCodeHeapSize = 0 {pd product} {ergonomic} bool UseAOT = false {product} {ergonomic} bool UseSerialGC = true {product} {ergonomic} Logging: Log output configuration: #0: stdout all=warning uptime,level,tags #1: stderr all=off uptime,level,tags Environment Variables: PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/bin/X11:/usr/local/bin:/root/synergy2416/sbin LD_LIBRARY_PATH=/usr/lib:/usr/lib/jvm/java-8/lib:/usr/lib/fpu:/usr/lib/fpu/jni:/root/synergy2416/lib SHELL=/bin/sh DISPLAY=:0 Signal Handlers: SIGSEGV: [libjvm.so+0x48008d], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO SIGBUS: [libjvm.so+0x48008d], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO SIGFPE: [libjvm.so+0x48008d], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO SIGPIPE: [libjvm.so+0x39c941], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO SIGXFSZ: [libjvm.so+0x39c941], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO SIGILL: [libjvm.so+0x48008d], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO SIGUSR2: [libjvm.so+0x39ca7d], sa_mask[0]=00000000000000000000000000000000, sa_flags=SA_RESTART|SA_SIGINFO SIGHUP: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none SIGINT: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none SIGTERM: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none SIGQUIT: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none --------------- S Y S T E M --------------- OS:NAME=Buildroot VERSION=2017.08 ID=buildroot VERSION_ID=2017.08 PRETTY_NAME="Buildroot 2017.08" uname:Linux 3.3.0 #125 SMP PREEMPT Fri Feb 5 07:04:03 CST 2021 armv7l libc:glibc 2.18 NPTL 2.18 rlimit: STACK 8192k, CORE infinity, NPROC 6317, NOFILE 4096, AS infinity, DATA infinity, FSIZE infinity load average:0.01 0.11 0.24 /proc/meminfo: MemTotal: 814012 kB MemFree: 16904 kB Buffers: 39124 kB Cached: 681976 kB SwapCached: 0 kB Active: 349288 kB Inactive: 406504 kB Active(anon): 46852 kB Inactive(anon): 636 kB Active(file): 302436 kB Inactive(file): 405868 kB Unevictable: 12136 kB Mlocked: 0 kB HighTotal: 270336 kB HighFree: 576 kB LowTotal: 543676 kB LowFree: 16328 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 4216 kB Writeback: 0 kB AnonPages: 46856 kB Mapped: 17836 kB Shmem: 660 kB Slab: 22584 kB SReclaimable: 18176 kB SUnreclaim: 4408 kB KernelStack: 744 kB PageTables: 580 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 407004 kB Committed_AS: 146396 kB VmallocTotal: 245760 kB VmallocUsed: 5276 kB VmallocChunk: 212992 kB /proc/sys/kernel/threads-max (system-wide limit on the number of threads): 12635 /proc/sys/vm/max_map_count (maximum number of memory map areas a process may have): 65530 /proc/sys/kernel/pid_max (system-wide limit on number of process identifiers): 32768 CPU:total 2 (initial active 2) (ARMv7), vfp /proc/cpuinfo: Processor : ARMv7 Processor rev 4 (v7l) processor : 0 BogoMIPS : 1810.43 processor : 1 BogoMIPS : 1823.53 Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4 idiva idivt CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xc07 CPU revision : 4 Hardware : sun7i Revision : 0000 Serial : 07c1120f5552484880758685165166cb Memory: 4k page, physical 814012k(16904k free), swap 0k(0k free) vm_info: OpenJDK Client VM (11-internal+0-adhoc.johnc.jdk11) for linux--vfp-hflt JRE (11-internal+0-adhoc.johnc.jdk11), built on Oct 8 2021 08:33:33 by "johnc" with gcc 4.8.5 END. jdk/jdk11: log - OpenJDK Mercurial Repositories<https://hg.openjdk.java.net/jdk/jdk11> age author description; Wed, 22 Aug 2018 21:50:12 +0200: jwilhelm: Added tag jdk-11+28 for changeset 76072a077ee1 default tip: Tue, 21 Aug 2018 12:48:10 -0700: jjg: 8209806: API docs should be updated to refer to javase11 jdk-11+28: Tue, 21 Aug 2018 11:30:48 -0700 hg.openjdk.java.net ? ? 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