From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Cooper Subject: Re: cpufreq segfaults when network cable plugged in Date: Mon, 12 Apr 2004 19:00:24 +0100 Sender: cpufreq-bounces@www.linux.org.uk Message-ID: <20040412190024.6b78f3b9.thecoop@runbox.com> References: <20040412004335.5995e422.thecoop@runbox.com> <20040412083058.GB7785@dominikbrodowski.de> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20040412083058.GB7785@dominikbrodowski.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: cpufreq-bounces+glkc-cpufreq=gmane.org@www.linux.org.uk Content-Type: text/plain; charset="us-ascii" To: cpufreq@www.linux.org.uk On Mon, 12 Apr 2004 10:30:58 +0200 Dominik Brodowski wrote: > On Mon, Apr 12, 2004 at 12:43:35AM +0100, Simon Cooper wrote: > > right, this is very strange, cpufreq (compiled into the kernel) segfaults > > whenever the network cable on my laptop is plugged in on bootup but boots > > ok when it is plugged in after the kernel has loaded. i can post the entire > > segfault msg but it'll need me to write it all down. driver is 'r8139' > > (1000Mbps card), kernel version 2.6.5-mm2 > > Hm, this is really very strange. > > Which cpufreq drivers do you use / are compiled into the kernel? > What are the last two to four functions called, where's the EIP at > the segfault? [the first few function names mentioned in the oops] > > Thanks, > Dominik > well, technically its a kernel oops (attempted ot kill init). powersave and performance govenors are compiled in, using p4_clockmod driver. Sometimes it boots fine with the cable in, but it oops's most of the time: Unable to handle kernel NULL pointer dereference at virtual address 00000018 ... EIP: 0060:[] Not tainted VLI EIP is at cpufreq_notify_transition+0x79/0x98 ... Call trace: [] cpufreq_p4_setdc+0x1eb/0x306 [] d_lookup+0x29/0x52 [] cpufreq_p4_target+0x5d/0x69 [] __cpufreq_driver_target+0x22/0x26 ... Simon