Hello Networkers.
I got a kernel panic on FreeBSD 6.0-RELEASE, which is probably caused
by a not initialised pointer "p = (void *) 0x0" within the
dummynet-code.
I analysed the crash dump and got
(kgdb) f 9
#9 0xc06d3670 in dummynet (unused=0x0) at ../../../netinet/ip_dummynet.c:785
(kgdb) i loc
p = (void *) 0x0
h = (struct dn_heap *) 0x4
heaps = {0xc093cf40, 0xc093cf60, 0xc093cf50}
i = 22
pe = (struct dn_pipe *) 0x4
(see backtrack[1] of the crash dump).
Some frames before I do have problems with subr_turnstile.c and
kern_mutex.c, which could be caused by a problem in dummynet - but I'm
not sure.
The machine does use dummynet (with DUMMYNET and HZ=1000) for
bandwidth management, but the problem - if it is within dummynet -
have to be a special case, because it crashes not as regulary as it
would do in other cases.
I'd be glad, if someone can help me.
I would be glad also if I could help to fix a maybe existing bug.
[1] To save bandwidth: The complete backtrack of that kernel panic is on
<URL:http://www.inacker.de/data/freebsd-kgdb-debug4.txt>, if that's
helpfull. Just ask for more informations if needed.
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