Description of problem: fc6 i686 kernel crashes on boot during agpgart init. Regular non-xen kernel works fine. Version-Release number of selected component (if applicable): kernel-2.6.19 and newer official FC6 released kernels. I have not tried any older kernels. How reproducible: Happens every single time reliably. Steps to Reproduce: 1. Tell Grub to boot on Xen kernel. 2. Watch dmesg.. 3. Actual results: During boot: Linux agpgart interface v0.101 (c) Dave Jones agpgart: Detected an Intel 965G Chipset. BUG: unable to handle kernel NULL pointer dereference at virtual address 00000008 ... Expected results: Not to crash.. Additional info: Setting agp=no in kernel boot flags of dom0 fixes this problem. Hardware configuration: Gigabyte GA-965P-DS3 motherboard (rev 1.0, bios F10) Intel Conroe E6400 (Core 2 Duo) CPU 4-gigs DDR2-800 ICH8 Northbridge. Please note that non-xen kernels work very happily and very reliably on this system.
Created attachment 151897 [details] Full bootlog of xen kernel boot up and crash.
This report targets FC6, which is now end-of-life. Please re-test against Fedora 7 or later, and if the issue persists, open a new bug. Thanks