Linux 进程由信号 6 终止，核心在 libc 中显示一种循环
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Process terminated by signal 6, core shows kind of loop in libc
提问by Vikash
On analysis of the core of a process (terminated by signal 6), on LINUX, stack bt shows :
分析一个进程的核心（由信号 6 终止），在 LINUX 上，堆栈 bt 显示：
Core was generated by `/opt/namsam/pac_rrc_qx_e1/bin/rrcprb'.
Program terminated with signal 6, Aborted.
#0 0x0000005555ffb004 in epoll_wait () from /lib64/libc.so.6
(gdb) bt
#0 0x0000005555ffb004 in epoll_wait () from /lib64/libc.so.6
#1 0x0000005555ffafe8 in __epoll_wait_nocancel () from /lib64/libc.so.6
#2 0x0000005555ffafe8 in __epoll_wait_nocancel () from /lib64/libc.so.6
#3 0x0000005555ffafe8 in __epoll_wait_nocancel () from /lib64/libc.so.6
#4 0x0000005555ffafe8 in __epoll_wait_nocancel () from /lib64/libc.so.6
#5 0x0000005555ffafe8 in __epoll_wait_nocancel () from /lib64/libc.so.6
#6 0x0000005555ffafe8 in __epoll_wait_nocancel () from /lib64/libc.so.6
#7 0x0000005555ffafe8 in __epoll_wait_nocancel () from /lib64/libc.so.6
libc seems to have gone in some loop.. Did something go wrong with the application "rrcprb" here..? please help me debug this issue..?
libc 似乎进入了某个循环.. 这里的应用程序“rrcprb”有问题吗..？请帮我调试这个问题..？
回答by Employed Russian
Since __epoll_wait_nocanceldoes not call itself, it's pretty clear that the stack trace you've got is bogus. Most likely cause is incorrect unwind descriptors in your libc.so.6.
由于__epoll_wait_nocancel不调用自身，很明显您获得的堆栈跟踪是伪造的。最可能的原因是libc.so.6.
It's also somewhat unlikely that you actually crashed in epoll_wait. Try thread apply all where, and see if there is a "more interesting" stack trace / thread for you to look at.
您实际上也不太可能坠入epoll_wait. 试试看thread apply all where，看看是否有“更有趣”的堆栈跟踪/线程供您查看。
