[Bug threads/26286] FAIL: gdb.threads/attach-many-short-lived-threads.exp: iter 1: break at break_fn: 1 (SIGTRAP)

[ianchi at andestech dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26286

Chungyi Chi <ianchi at andestech dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |ianchi at andestech dot com

--- Comment #3 from Chungyi Chi <ianchi at andestech dot com> ---
It is not a bug but security issue. Due to ptrace protection, if you wanna
attach another process without "parent-child relationship", it is illegal
behavior.

There are two different way to solve this issue.
1. Execute under root level
2. Set "/proc/sys/kernel/yama/ptrace_scope" into 0.

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