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Re: gdbserver unable to attach to process
- From: Daniel Jacobowitz <drow at false dot org>
- To: Francesco Bradascio <fbradasc at yahoo dot it>
- Cc: gdb at sourceware dot org
- Date: Sat, 24 Feb 2007 11:15:09 -0500
- Subject: Re: gdbserver unable to attach to process
- References: <45E05F1A.9020907@yahoo.it>
On Sat, Feb 24, 2007 at 04:51:54PM +0100, Francesco Bradascio wrote:
> Hello,
> I developing an application for mobilinux (kernel 2.6.10) on ARM V6
> platform and I need to debug it , however, the gdbserver remote debugger
> agent is unable to attach to any executable... here's what happens:
>
> First I tried to execute gdbserver (on remote platform - IP:
> 192.168.16.2) as follow:
>
> $gdbserver :12345 /usr/local/bin/flP5
> Process /usr/local/bin/flP5 created; pid = 4630
>
> at this point my application (flP5) starts without stopping at first
> instruction (as should be) and only after I kill the process 4630,
> gdbserver shows the "Listening on port 12345" prompt, furthermore, when
> I do "target remote 192.168.16.2:12345" from my host's gdb I get a
> "Connection refused" message and the remote gdbserver exits.
This sounds like something is wrong with your environment, not with
gdbserver - I would be suspicious of a kernel bug of some sort. Or,
perhaps, is the application set-user-ID? That would also explain this:
> $ /usr/local/bin/flP5 &
> [1] 4718
> $ gdbserver :12345 --attach 4718
> Cannot attach to process 4718: Operation not permitted (1)
--
Daniel Jacobowitz
CodeSourcery