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
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Used to work fine with all previous FC6 kernels (including 18.104.22.168-32.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]
Adding the next line in /etc/modprobe.conf and reinstalling the 22.214.171.124-42.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.