Re: [uml-devel] Debian bug 271069, gdb startup fails

[Jeff Dike <jdike@addtoit.com>]

dan@debian.org said:
> - GDB forks
> - the child issues TRACEME
> - GDB waits for it, successfully now that EINTR is handled
> - GDB issues PTRACE_SETOPTIONS (returns -EINVAL because the proxy
>   does not support it)
> - GDB decides that the feature isn't available (good so far; it isn't)
> - GDB tries to clean up.  It sends PTRACE_KILL to the child it forked.
> - GDB waits for the child to exit.  Which it never does.

From your description above (I haven't seen this personally), there are a
couple of things I don't understand.

First, I don't see how a PTRACE_KILL can be going to the wrong process.  I see
only one child under ptrace.

Second, it would seem that, even if this was successful, the end result is
'./linux debug' just dropping you back to a shell prompt.  This may be better
than the current hang, but it's not the desired result.

				Jeff



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