amd64/182350: core dump with packet filter -- pf_overlad_task

Thibault titi5187 at
Tue Sep 24 17:10:01 UTC 2013

>Number:         182350
>Category:       amd64
>Synopsis:       core dump with packet filter -- pf_overlad_task
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-amd64
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Sep 24 17:10:00 UTC 2013
>Originator:     Thibault
>Release:        10.0-CURRENT
FreeBSD XXXXX 10.0-CURRENT FreeBSD 10.0-CURRENT #12: Thu Sep 19 12:05:22 CEST 2013     XX@@XX:/usr/obj/usr/src/sys/MONNOYAU  amd64
In Fact, in FreeBSD, when a core with the active "VIMAGE" option, and a rule in pf.conf overload, the freebsd core dump.
it is pf_overload_task as you can see on the capture.

In fact, in the pf.c the pf_overload_tack not initialize,suddenly the pf_status falls on a NULL value VNET.
Seen by swi6_task_queue the td_vnet is not properly initialize

I have go a screenshot if you want.
Compile a freebsd kernel 10-CURRENT with option VIMAGES
In pf.conf add a new rules with overload.



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