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unw_init_remote失败,出现UNW_EBADREG

[英]unw_init_remote failed with UNW_EBADREG

On android, while collecting traces of a particular native process, I observed that the backtrace of a particular thread of the process was not collected(libunwind is used to collect the backtrace). 在android上,在收集特定本机进程的跟踪时,我观察到未收集进程的特定线程的回溯(libunwind用于收集回溯)。

First attempt: 第一次尝试:

12-29 20:47:20.902 13088 13088 W libbacktrace: virtual bool UnwindPtrace::Unwind(size_t, ucontext_t *): unw_init_remote failed -3

12-29 20:47:20.902 13088 13088 E DEBUG   : Unwind failed: tid = 1544: Setup failed

Second attempt: 第二次尝试:

12-29 20:47:54.683 13135 13135 W libbacktrace: virtual bool UnwindPtrace::Unwind(size_t, ucontext_t *): unw_init_remote failed -3

12-29 20:47:54.683 13135 13135 E DEBUG   : Unwind failed: tid = 1544: Setup failed

From the docs, -3 seems to be UNW_EBADREG. 从文档来看, -3似乎是UNW_EBADREG。 But I am unable to figure out when exactly is this error code is returned? 但是我无法弄清楚何时返回此错误代码?

Any pointers appreciated! 任何指针表示赞赏!

获得了有关为何该线程的回溯失败失败的更多信息-该线程处于“磁盘睡眠”或“ D”状态。

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