From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ahna, Christopher J" Date: Mon, 30 Oct 2000 23:41:02 +0000 Subject: RE: [Linux-ia64] Common kernel paging error I get Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Ken, I saw something like this a lot when I ran my BigSur with 4GB or more memory. It turned out that my problem came from some bad memory management by the USB driver that was messing up other parts of the kernel. You might want to try the attached patch (made against test9) and see if it solves your problem. By the way, the fix included in the patch appears in the latest test releases of 2.4.0-test10. Thanks, Chris ----------------------------------------- diff -urN linux-2.4.0-test9-ia64-001004/drivers/usb/hub.c linux-2.4.0-test9-ia64-001004-patch/drivers/usb/hub.c --- linux-2.4.0-test9-ia64-001004/drivers/usb/hub.c Thu Sep 28 13:20:48 2000 +++ linux-2.4.0-test9-ia64-001004-patch/drivers/usb/hub.c Mon Oct 30 08:26:50 2000 @@ -592,11 +592,6 @@ info("USB new device connect on bus%d, assigned device number %d", dev->bus->busnum, dev->devnum); - if (portstr) - kfree(portstr); - if (tempstr) - kfree(tempstr); - /* Run it through the hoops (find a driver, etc) */ if (!usb_new_device(dev)) { up(&usb_address0_sem); @@ -612,6 +607,12 @@ hub->children[port] = NULL; usb_hub_port_disable(hub, port); + + if (portstr) + kfree(portstr); + if (tempstr) + kfree(tempstr); + up(&usb_address0_sem); } -----Original Message----- From: Broadfoot, KenX [mailto:kenx.broadfoot@intel.com] Sent: Friday, October 27, 2000 9:26 AM To: linux-ia64@linuxia64.org Subject: [Linux-ia64] Common kernel paging error I get Just wondering if you all see this error often: Unable to handle kernel paging request at virtual address 0000000000000008 I am using 2.4.0-test9 patched + kdb When this happens I can't even get into the debugger. This is on a Quad Lion with 2 gigs of Ram I see this mostly when running fairly heavy network traffic. If anyone is familiar with this and has found a way to minimize it, or can explain what it is to me I would appreciate it. --ken broadfoot _______________________________________________ Linux-IA64 mailing list Linux-IA64@linuxia64.org http://lists.linuxia64.org/lists/listinfo/linux-ia64