Date: Wed, 27 Nov 2002 09:38:57 +0100 From: Aurelien Nephtali <aurelien.nephtali@wanadoo.fr> To: "M. Warner Losh" <imp@bsdimp.com> Cc: current@freebsd.org Subject: Re: PANIC: "Most recently used by bus" Message-ID: <20021127083857.GA747@nebula.wanadoo.fr> In-Reply-To: <20021127.004323.65008236.imp@bsdimp.com> References: <20021126192147.GB530@nebula.wanadoo.fr> <20021127.003130.15920342.imp@bsdimp.com> <20021127.004323.65008236.imp@bsdimp.com>
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[-- Attachment #1 --] On Wed, Nov 27, 2002 at 12:43:23AM -0700, M. Warner Losh wrote: > In message: <20021127.003130.15920342.imp@bsdimp.com> > "M. Warner Losh" <imp@bsdimp.com> writes: > : In message: <20021126192147.GB530@nebula.wanadoo.fr> > : Aurelien Nephtali <aurelien.nephtali@wanadoo.fr> writes: > : : I've got a panic by unplugging my NIC then plugging it again and then doing > : : a dhclient <interface>. I've attached some informations about the panic. > : > : Kill the dhclient after you unplug the interface, but before you plug > : it back in. I've killed it before, as always. > > This can also be caused by a bug in the network driver. If it failed > to attach for some reason, but created (and not destroyed) a mutex, > then the WITNESS code will modify the softc after it has been freed, > trigging the panic you described. > > Warner Yes, I think it's a bug too. I've already unplugged/plugged my NIC in the past without any problem (and always with WITNESS enabled) so maybe it's a new bug introduced recently, but I've not seen any commit about if_ed recently. -- Aurélien [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) iD8DBQE95IShDNsbHbt8ok8RAgrJAKCUdL7gOvy6HJYzuYumPVueo1ce0gCeOUl6 w+5fSDSowEPNN+JTfr22068= =2tKG -----END PGP SIGNATURE-----
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