出于某种原因,我无法附加到我自己的流程?!strace
如果我以 root 身份尝试,效果很好。
$ ./list8 &
[1] 3141
$ child4 starts...
$ strace -p 3141
attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted
Could not attach to process. If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user. For more details, see /etc/sysctl.d/10-ptrace.conf
$ cat /proc/sys/kernel/yama/ptrace_scope
1
在 lubuntu 13.10 上运行
Linux goal 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:19:42 UTC 2013 i686 i686 i686 GNU/Linux
那么如何gdb
附加到用户自己的进程而不必乱搞内核设置(ptrace_scope
)?