gdb调试Alpine Linux上的OpenJDK java失败了“线程接收信号？，未知信号”

Question

我在使用gdb尝试在Alpine Linux上调试OpenJDK java时遇到了困难 - 是否有人成功地这样做了？

当试图在gdb中调试java时，例如，gdb java和r -version，它会立即失败：

Thread 1 "java" recieved signal ?, Unknown signal.
__cp_end () at src/thread/x86_64/syscall_cp.s:29

我搜索并搜索但找不到任何关于Alpine的OpenJDK调试的参考或解决方案。

在其他平台（macOS Sierra，MinGW）上看到的处理相同gdb错误的其他线程表明，recieved signal ?, Unknown signal可能由各种原因导致，包括gdb bug，uncaught exception，stack overflow和其他应用程序错误。

在gdb之外，java正在运行没有任何问题，并且gdb在调试简单的C ++程序时工作正常。我正在运行Alpine V3.8。

我试过的事情：

不同的gdb版本（8.0.1-r6，8.0.1-r3，7.12.1-r1）。
不同的OpenJDK版本（1.8.0_171，1.7.0_181）。
从不同的贝壳（qazxsw poi，qazxsw poi）运行，有和没有qazxsw poi。
禁止在/bin/ash：/bin/bash停止信号，同样为sudo，.gdbinit，handle SIGSEGV nostop noprint pass，SIGPIPE停止。
将SIGHUP添加到SIGFPE。

谢谢你的帮助！

编辑：

这是抛出未知信号的完整堆栈，这会导致JVMInit失败：

SIG34

与此堆栈跟踪匹配的musl源文件：

1：set startup-with-shell off
2：.gdbinit
3，4：(gdb) r -version Starting program: /usr/lib/jvm/java-1.8-openjdk/bin/java -version process 16214 is executing new program: /usr/lib/jvm/java-1.8-openjdk/bin/java [New LWP 16219] Thread 1 "java" received signal ?, Unknown signal. __cp_end () at src/thread/x86_64/syscall_cp.s:29 29 src/thread/x86_64/syscall_cp.s: No such file or directory. (gdb) info threads Id Target Id Frame * 1 LWP 16214 "java" __cp_end () at src/thread/x86_64/syscall_cp.s:29 2 LWP 16219 "java" __synccall (func=func@entry=0x7ffff7da2662 <do_setrlimit>, ctx=ctx@entry=0x7ffff7ff4720) at src/thread/synccall.c:143 (gdb) where #0 __cp_end () at src/thread/x86_64/syscall_cp.s:29 #1 0x00007ffff7dbed2d in __syscall_cp_c (nr=202, u=<optimized out>, v=<optimized out>, w=<optimized out>, x=<optimized out>, y=<optimized out>, z=0) at src/thread/pthread_cancel.c:35 #2 0x00007ffff7dbe350 in __timedwait_cp (addr=addr@entry=0x7ffff7ff4b20, val=16219, clk=clk@entry=0, at=at@entry=0x0, priv=priv@entry=0) at src/thread/__timedwait.c:31 #3 0x00007ffff7dbfdc4 in __pthread_timedjoin_np (t=0x7ffff7ff4ae8, res=res@entry=0x7fffffffa348, at=at@entry=0x0) at src/thread/pthread_join.c:16 #4 0x00007ffff7dbfe02 in __pthread_join (t=<optimized out>, res=res@entry=0x7fffffffa348) at src/thread/pthread_join.c:27 #5 0x00007ffff7b6695e in ContinueInNewThread0 (continuation=continuation@entry=0x7ffff7b61a60 <JavaMain>, stack_size=1048576, args=args@entry=0x7fffffffa3e0) at /home/buildozer/aports/community/openjdk8/src/icedtea-3.8.0/openjdk/jdk/src/solaris/bin/java_md_solinux.c:1046 #6 0x00007ffff7b634a4 in ContinueInNewThread (ifn=ifn@entry=0x7fffffffa4f0, threadStackSize=<optimized out>, argc=1, argv=<optimized out>, mode=mode@entry=841574793, what=what@entry=0x0, ret=0) at /home/buildozer/aports/community/openjdk8/src/icedtea-3.8.0/openjdk/jdk/src/share/bin/java.c:2024 #7 0x00007ffff7b66a08 in JVMInit (ifn=ifn@entry=0x7fffffffa4f0, threadStackSize=<optimized out>, argc=<optimized out>, argv=<optimized out>, mode=841574793, mode@entry=0, what=what@entry=0x0, ret=<optimized out>) at /home/buildozer/aports/community/openjdk8/src/icedtea-3.8.0/openjdk/jdk/src/solaris/bin/java_md_solinux.c:1093 #8 0x00007ffff7b63e30 in JLI_Launch (argc=<optimized out>, argv=<optimized out>, jargc=<optimized out>, jargv=<optimized out>, appclassc=1, appclassv=0x0, fullversion=0x555555554843 "1.8.0_171-b11", dotversion=0x55555555483f "1.8", pname=0x55555555483a "java", lname=0x555555554832 "openjdk", javaargs=0 '00', cpwildcard=1 '01', javaw=0 '00', ergo=0) at /home/buildozer/aports/community/openjdk8/src/icedtea-3.8.0/openjdk/jdk/src/share/bin/java.c:304 #9 0x0000555555554691 in main (argc=<optimized out>, argv=<optimized out>) at /home/buildozer/aports/community/openjdk8/src/icedtea-3.8.0/openjdk/jdk/src/share/bin/main.c:125 (gdb)

OpenJDK源代码：

7：http://git.musl-libc.org/cgit/musl/tree/src/thread/pthread_cancel.c

http://git.musl-libc.org/cgit/musl/tree/src/thread/__timedwait.c试图创建http://git.musl-libc.org/cgit/musl/tree/src/thread/pthread_join.c原生线程，通过调用https://github.com/frohoff/jdk8u-jdk/blob/master/src/solaris/bin/java_md_solinux.c，它调用JVMInit，并在那里爆炸。