udp.sendmsg

[David Smith]

On 08/18/2016 09:17 PM, webman@manfbraun.de wrote:
> Hi !
> 
> Thanks for reply - any sorry for my late answer. The mail lands
> unexpectedly in my spam folder ...
> 
> In the meantime I build a little better usable script.
> But something changed my Systemtap (no idea in mind).
> The system tap script now failing after some time,
> but was running for weeks without any problems. The
> error is:
> 
> UDP53 1471300316.1471300316458  192.168.26.254 6071(iceweasel/DNS Res~ver
> #60) 1(systemd)
> ERROR: kernel string copy fault at 0x00000000000004f0 [man error::fault]
> near identifier 'kernel_string' at
> /usr/share/systemtap/tapset/linux/conversions.stp:18:10
> WARNING: Number of errors: 1, skipped probes: 1
> WARNING: /usr/bin/staprun exited with status: 1
> Pass 5: run failed.  [man error::pass5]

Systemtap is trying to protect you here from reading a bad address and
potentially crashing the kernel.

Can you show us your current script so we can try to help you get around
this?

-- 
David Smith
dsmith@redhat.com
Red Hat
http://www.redhat.com
256.217.0141 (direct)
256.837.0057 (fax)