On Wed, Mar 9, 2022 at 8:28 AM Rob Whitlock <rwhitloc...@gmail.com> wrote:
> I'm trying to attach gdb to an already running cwm but I get the following > error: > > ptrace: Invalid argument. > > Why am I getting this error? Also, I have already set kern.global_ptrace=1, > and both cwm and gdb are being run by the same user. This problem occurs > both with the gdb in base and the gdb/egdb in ports. > Let me guess: the cwm process is an ancestor of the shell where you're invoking gdb. We don't permit that as the reparenting done by ptrace() would create a loop in the process tree, which breaks assumptions by both kernel and userspace programs. If that's the case, run gdb from an ssh session or something like that. Hmm, I guess I never updated the ptrace(2) manpage to mention that... Philip Guenther
