Date: Sun, 14 Aug 2005 09:09:24 +1200 From: Andrew Thompson <thompsa@freebsd.org> To: Michal Mertl <mime@traveller.cz> Cc: freebsd-current@freebsd.org Subject: Re: Panics with if_bridge(4) Message-ID: <20050813210924.GA79066@heff.fud.org.nz> In-Reply-To: <1123929866.61712.29.camel@genius1.i.cz>
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On Sat, Aug 13, 2005 at 12:44:26PM +0200, Michal Mertl wrote: > I'm experiencing panics when configuring if_bridge interface on a debug > kernel with INVARIANTS. > > This is how I trigger it (I've got custom kernel with everything I use > compiled statically into it): > # ifconfig bridge0 create > > bridge0: bpf attached > bridge0: Ethernet address: ac:de:48:0c:22:8f > > # ifconfig bridge0 192.168.0.2 addm ath0 addm fxp0 > > panic: mutex if_bridge not owned at ../../../net/bridgestp.c:899 > Thanks, im testing a patch to fix this now. > > The if_bridge also causes crashes after ifconfig destroy with "memory > modified after free" messages - it seems if_bridge doesn't clean up > after itself completely. Ive reproduced this locally and seems related to another problem I am working on where destroying the bridge while a bpf consumer is attached results in a panic in the callout code in softclock(); > I'm missing a way to list the table of mac addresses learned behind an > interface. What good is ioctl to delete an address from the list if one > can't see the list? The command is 'ifconfig <bridge> addr', I could have sworn it was in the ifconfig manual page but you are quite right that it itsnt documented. Thanks for pointing this out. Andrewhome | help
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