kern/111286: RELENG_6 em(4) watchdog timeout with IPSEC/mpsafenet
nf+fbsd at marginal.net
Thu Apr 5 20:50:08 UTC 2007
>Synopsis: RELENG_6 em(4) watchdog timeout with IPSEC/mpsafenet
>Arrival-Date: Thu Apr 05 20:50:07 GMT 2007
>Originator: Nathan Ferch
>Release: 6,2-RELEASE, 6.2-STABLE
FreeBSD threepwood 6.2-STABLE FreeBSD 6.2-STABLE #8: Thu Apr 5 12:40:54 CDT 2007 root at threepwood:/usr/obj/usr/src/sys/THREEPWOOD i386
I am getting frequent interface lockups and watchdog timeouts with em(4) when IPSEC is loaded with mpsafenet enabled or IPSEC is compiled into the kernel.
I have not been able to reproduce the problem with other interfaces.
generate network traffic:
nttcp -D -l 65535 -T 10.129.0.2 (repeat until hang/watchdog timeout)
The watchdog timeout will usually reset the interface and allow operation after a few seconds.
In the case the watchdog timeout does not kick in, bringing the interface down then up will have the same effect.
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