Date: Fri, 24 Nov 2006 01:49:00 -0600 From: "Scot Hetzel" <swhetzel@gmail.com> To: "Kris Kennaway" <kris@obsecurity.org> Cc: Bakul Shah <bakul@bitblocks.com>, FreeBSD Ports <freebsd-ports@freebsd.org>, Anders Troback <freebsd@troback.com> Subject: Re: Qemu crash... Message-ID: <790a9fff0611232349i1388322ai8406469bc213092e@mail.gmail.com> In-Reply-To: <20061123214220.GA84447@xor.obsecurity.org> References: <20061123211532.GB83751@xor.obsecurity.org> <20061123212301.C7C445B3E@mail.bitblocks.com> <20061123214220.GA84447@xor.obsecurity.org>
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On 11/23/06, Kris Kennaway <kris@obsecurity.org> wrote: > On Thu, Nov 23, 2006 at 01:23:01PM -0800, Bakul Shah wrote: > > > The problem is that kldloading a module if it's already in the kernel > > > can cause a panic. Also if the module becomes stale with respect to > > > the running kernel, this approach can cause a lot of confusion. > > > > I thought the following would do the trick: > > > > kldstat -m aio >/devnull 2>&1 || kldload aio > > > > > Something I'd like to see is > > > > > > a) Fixing the kldload "double load" problems > > > > See above. Works in -current at least. > > It "should" work, but people sometimes report that it doesn't > (i.e. when they get the resulting panic). It at least needs to be > investigated. > I ran across this problem when trying to write a port for my wireless adapter, to determine if the kernel module was loaded, so that it could be unloaded before the module was removed from the system: hp010# kldload ./bcmwl564_sys.ko hp010# kldstat | grep bcm 11 1 0xffffffffa2d8b000 84f20 bcmwl564_sys.ko hp010# kldstat -m bcmwl564_sys kldstat: can't find module bcmwl564_sys: No such file or directory hp010# kldstat -m pci/bcmwl564_sys Id Refs Name 378 1 pci/bcmwl564_sys I found that value by using kldstat -v, and picking one of of the named modules listed under bcmwl564_sys.ko. This could be why people are seeing the folowing fail: kldstat -qm <module> || kldload <module> Scot -- DISCLAIMER: No electrons were mamed while sending this message. Only slightly bruised.
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