ligangbin117 commented on issue #1606:
URL: https://github.com/apache/brpc/issues/1606#issuecomment-2212885281
我在使用jni调用brpc的时候 也遇到了这个问题。
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007f259f32ff95 in __GI_abort () at abort.c:79
#2 0x00007f259b95be09 in os::abort(bool) () from
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el7_9.x86_64/jre/lib/amd64/server/libjvm.so
#3 0x00007f259bb8367a in VMError::report_and_die() () from
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el7_9.x86_64/jre/lib/amd64/server/libjvm.so
#4 0x00007f259b965fb5 in JVM_handle_linux_signal () from
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el7_9.x86_64/jre/lib/amd64/server/libjvm.so
#5 0x00007f259b958fc8 in signalHandler(int, siginfo_t*, void*) () from
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el7_9.x86_64/jre/lib/amd64/server/libjvm.so
#6 <signal handler called>
#7 0x0000000000000000 in ?? ()
#8 0x00007f25a008b80a in ~ThreadExitHelper (this=0x55d1764021e0,
__in_chrg=<optimized out>) at
/root/volume/src/EDS5.1.0/eds-deps/src/brpc/src/butil/thread_local.cpp:41
#9 butil::detail::delete_thread_exit_helper (arg=0x55d1764021e0) at
/root/volume/src/EDS5.1.0/eds-deps/src/brpc/src/butil/thread_local.cpp:80
#10 0x00007f259fce5a78 in __nptl_deallocate_tsd () at pthread_create.c:301
#11 0x00007f259fce698d in __nptl_deallocate_tsd () at
../sysdeps/nptl/futex-internal.h:82
#12 start_thread (arg=0x7f24d3031700) at pthread_create.c:488
#13 0x00007f259f3eebef in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) p pd->specific
$3 = {0x7f24d3031a10, 0x0 <repeats 31 times>}
(gdb) p *pd->specific[0]
$4 = {seq = 1, data = 0x0}
(gdb) p __pthread_keys
$5 = {{seq = 1, destr = 0x7f25a008b750
<butil::detail::delete_thread_exit_helper(void*)>}, {seq = 1, destr =
0x7f259f6b7340 <free_key_mem>}, {seq = 1,
destr = 0x7f259b958bb0 <restore_thread_pointer(void*)>}, {seq = 1, destr
= 0x7f25266e0420 <on_thread_exit>}, {seq = 0, destr = 0x0} <repeats 1020 times>}
我在butil/thread_local.cpp 文件 里面 注册和除 的时候 都 加了日志，但是只有删除 的时候 打印了日志：
thread 0x7f24d3031700 key 0 delete 0x55d1764021e0
thread 0x7f24d3031700 fns 0x55d1764021e0 num 8737345935673
thread 0x7f25266d7270 first 0x7f25266d74c0 second (nil)
thread 0x0 first 0x100000000 second (nil)
删除ThreadExitHelper传入的内存是有问题的。这个问题和brpc.so的加载 顺序有关系 。
开始是和 https://github.com/apache/brpc/issues/2266 这个问题有关，加载libbrpc.so会报
pthread_mutex_lock 未定义
通过https://github.com/apache/brpc/issues/1086这个方法，export
LD_PRELOAD=/usr/lib64/libbrpc.so 解决了问题
但是在java线程退出的时候 就直接 core掉了。
我现在按照 https://github.com/apache/brpc/issues/2266
这个解决方案，将pthread_mutex_lock函数注释 掉。然后去掉export
LD_PRELOAD=/usr/lib64/libbrpc.so是没有问题的。没搞清楚为什么使用export
LD_PRELOAD=/usr/lib64/libbrpc.so 会有问题。
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