Kernel panic with if_sf.ko
rwatson at FreeBSD.org
Wed Jul 1 21:42:48 UTC 2009
On Wed, 1 Jul 2009, Jung-uk Kim wrote:
>>> Last time I checked, bpf(4) with MAC caused a similar problem when it is
>>> destroying bpf descriptor label. GENERIC includes MAC by default now.
>>> If you don't need MAC, try removing "options MAC" from your kernel
>> I was not aware of this problem -- could you provide some more details?
>> Any panic caused by having MAC in the kernel is a bug...
> It was about a month ago. I had funny impression that you and sam were
> working on it cause it started happening when sam added bpf detach event
> handler and MAC was enabled by default. Any way, I will let you know if I
> can reproduce the problem.
There have been a number of tear-down related races for ifnets, more of which
are closed now than before the last few weeks, but none MAC-related as far as
I'm aware. If it recurs, please let me know and I'm happy to help investigate
(MAC-related or otherwise).
Robert N M Watson
University of Cambridge
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