kern/127888: kernel trap freebsd6.3p2

Wouter Snels nospam at ofloo.net
Sun Oct 5 22:10:02 UTC 2008


>Number:         127888
>Category:       kern
>Synopsis:       kernel trap freebsd6.3p2
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Oct 05 22:10:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Wouter Snels
>Release:        FreeBSD 6.3-RELEASE-p2
>Organization:
>Environment:
FreeBSD narf.ofloo.net 6.3-RELEASE-p2 FreeBSD 6.3-RELEASE-p2 #2: Wed Jun  4 18:20:43 CEST 2008     ofloo at narf.ofloo.net:/usr/obj/usr/src/sys/OFL  i386
>Description:
system crashes when using IPv6 over multi connections, interface stf i recently reported a simular problem on freebsd7 though I'm not sure if it's the same thing because when I ran kgdb bt it showed something about libthread

incase it's the same problem, http://www.freebsd.org/cgi/query-pr.cgi?pr=127699

can repeat it just have setup few 6tunnels and let data flow through it system crashes within seconds.

sudo kgdb /boot/kernel/kernel /var/crash/vmcore.0
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
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This GDB was configured as "i386-marcel-freebsd".
(no debugging symbols found)...Attempt to extract a component of a value that is not a structure pointer.
(kgdb) bt 
#0  0xc06a744a in doadump ()
#1  0xc06a79a6 in boot ()
#2  0xc06a7ccd in panic ()
#3  0xc0922524 in trap_fatal ()
#4  0xc0922263 in trap_pfault ()
#5  0xc0921ebd in trap ()
#6  0xc090d68a in calltrap ()
#7  0xc6e45713 in ?? ()
Previous frame inner to this frame (corrupt stack?)

>How-To-Repeat:
can repeat it just have setup few 6tunnels and let data flow through it system crashes within seconds.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:


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