I'm trying to run this simple program
ls under strace and it wouldnt let me. Can you guys think of why this be the case?
[jeffjose@skipper ~]$ strace ls strace: ptrace(PTRACE_TRACEME, ...): Permission denied
I'm on Fedora 17b, and my shell is
tcsh. I can provide more info, if needed.
UPDATE: Christopher points out that there's a bug report on this. He also suggests me to tweak selinux or disable it. Is that the only way? What does this mean? What am I doing if I do that? Can someone elaborate and answer that? I'll chose that as the correct answer for my query. Thanks!
UPDATE2: I was doing some debugging using
gdb and this came up again. Lucky for me, what needs to be done was clearly mentioned there.
warning: the SELinux boolean 'deny_ptrace' is enabled, you can disable this process attach protection by: (gdb) shell sudo setsebool deny_ptrace=0
I was able to make
strace run without any trouble. But what does this mean? What did I just do?