Red Hat Bugzilla – Bug 597710
kernel-220.127.116.11-112.fc13.x86_64 doesn't find btrfs-root-device
Last modified: 2011-06-09 14:09:53 EDT
Description of problem:
After choosing this kernel in the fedora start menu i get a kernelloop and my system freeze.
This happens in the begining of the boot process before udev.
There was no trace or anything other logged. So i had to write it down from the screen.
My root-filesystem is btrfs on /dev/sda1.
If you want to know more info let me know.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Kernel-panic - not syncing:VFS: Unable to mount root fs on unknown-block (0,0)
Pid:1 comm:swapper Not tainted 18.104.22.168-112.fc13.x86_64.debug #1
[<ffffffff8147939b>] panic x0x7a/0x142
[<ffffffff81d7931b>] mount_block_root x0x266/0x291
[<ffffffff81d7939b>] mount_root x0x56/0x5d
[<ffffffff81d79510>] prepare_namespace x0x170/0x26a
[<ffffffff81d787a8>] kernel_init x0x256/0x26a
[<ffffffff8100aae4>] kernel_threat_helper x0x4/0x10
[<ffffffff8147b410>] restore args x0x0/0x26a
[<ffffffff81d78552>] kernel_init x0x0/0x26a
[<ffffffff8100aae0>] kernel_threat_helper x0x0/0x10
title Fedora (22.214.171.124-112.fc13.x86_64.debug)
kernel /vmlinuz-126.96.36.199-112.fc13.x86_64.debug ro root=UUID=5654627e-a81f-4456-965a-8ed3469c4126 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM rd_NO_PLYMOUTH LANG=de_DE.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=de-latin1-nodeadkeys nofirewire fastboot raid=noautodetect selinux=0 nomodeset vga=789
The patch btrfs-check-for-read-permission-on-src-file-in-clone-ioctl.patch is ugly for my system.
I delete the patch lines in patch-188.8.131.52 from this patch and rebuild the kernel.
With this rebuild-kernel my system boot and work with no problems.
I hope you delete this patch from the kernel mainline or make a rework of it.
I have exactly the same issue with an ext4 filesystem.
I run on a fresh installation of fedora (about 30min when the bug appends),
so all my configs are about the default ones.
Try use kernel-184.108.40.206-122.fc13.x86_64 from koji. With this kernel include the btrfs-patch my system starts well.
Same issue on same I686 kernel-220.127.116.11-112.fc13.i686 on ext4, only other thing i have noticed is that the Caps Lock flashes on my thinkpad display, doubt relevant but thought odd so added
This message is a reminder that Fedora 13 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
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Thank you Bug-Developmenters,
But it's to late, i do not use fc13 since 1 years ago. ;)