[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: kern/43185: bpf_validate() uses BPF_RVAL() when it should use BPF_SRC()
The following reply was made to PR kern/43185; it has been noted by GNATS.
From: Guy Harris <guy%alum.mit.edu@localhost>
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
Subject: Re: kern/43185: bpf_validate() uses BPF_RVAL() when it should use
Date: Wed, 21 Apr 2010 02:40:55 -0700
On Apr 21, 2010, at 2:12 AM, Guy Harris wrote:
> I don't have a NetBSD VM on which to try this, and I'm not sure why =
I'm not getting a crash on my OpenBSD 4.2 VM (OpenBSD has the same bug), =
but a live tcpdump capture with a filter of "link[0:4]/0 =3D 2" *should* =
get the filter rejected:
> but it doesn't (at least not on OpenBSD 4.2 - the NetBSD =
bpf_validate() has the same code).
It doesn't because
1) I'm a moron and forgot that it actually needs to see network =
traffic in order to try the filter
2) the virtual machine isn't on a particularly busy network, so =
it wasn't getting any traffic.
If I backgrounded tcpdump and then did a ping, crashorama.=
Main Index |
Thread Index |