Red Hat Bugzilla – Bug 253782
Boot fails with a kernel panic on my laptop
Last modified: 2007-11-30 17:12:13 EST
Description of problem: New kernel fails on boot with a kernel panic. This is the end result of the failure to detect the hard disk so kernel does not have where to switchroot. The boot device is a SATA HD on an Intel ICH7m controller in combined mode (ata_piix 0000:00:1f.2: MAP [ P0 P2 IDE IDE ]) which normally gets handled by libata(ata_piix) driver. Version-Release number of selected component (if applicable): 2.6.22.2-42.fc6 How reproducible: always Steps to Reproduce: 1.just boot 2. 3. Actual results: kernel panic Expected results: Additional info: Used to work fine with all previous FC6 kernels (including 2.6.22.1-32.fc6) The only way to get the latest kernel to boot is to not use libata at all by appending the kernel boot option "combined_mode=ide" which is not acceptable since no DMA is used for my hard disk and therefore is very slow. I can not provide a dmesg log since the panic happens too early.
Created attachment 162014 [details] lspci -nnvvvxxx
Resolved: Adding the next line in /etc/modprobe.conf and reinstalling the 2.6.22.2-42.fc6 kernel did the trick. options libata ignore_hpa=1 I guess some changes regarding HPA treatment originating from FC7 kernels lurked in libata module. I think a warning message in package-announce-list is in order here.