Arch Linux

hugsie

Member

Registered: 2018-01-26

Posts: 46

Kernel Panic after System Crash

While running pacman -Syu my system crashed and now it runs into a kernel panic when starting.

I booted into the live cd, decrypted and mounted my partitions and chrooted into my system. So far so good.

Normally i run the linux-vfio kernel but i am unable to install packages from AUR so i tried installing the default kernel but i get the error:

pacman -S linux linux-headers

...
:: Running post-transaction hooks...
...
(3/3) Updating linux initcpios...
==> ERROR: invalid kernel specified: `/boot/vmlinuz-linux`

Last edited by hugsie (2019-01-09 07:34:23)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,697

Re: Kernel Panic after System Crash

Do not chroot into the system (you don't know what's broken) but use the --sysroot parameter for pacman and perform a full update, check "pacman --sysroot /mnt -Qkk" and ensure there're no other compromised packages. (Otherwise re-install them, you'll have to pay a little attention because it's normal for some files to be changed and you might want to "| grep -v ' 0 altered files'" to filter away "all good" messages)

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

hugsie

Member

Registered: 2018-01-26

Posts: 46

Re: Kernel Panic after System Crash

Thanks for helping.

I get a lot of "Modification time mismatch" but i guess thats normal since i already chrooted into the system.

pacman --sysroot /mnt -Syu systemd
error: could not open file /etc/mtab: No such file or directory
error: could not determine filesystem mount points
error: failed to commit transaction (unexpected error)

i also rechecked the kernel panic message. It  said failed to execute /sbin/init

Last edited by hugsie (2019-01-09 08:49:23)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,697

Re: Kernel Panic after System Crash

error: could not open file /etc/mtab: No such file or directory

Are you still chrooted into the installed system here? Don't. The idea is an offline update, ie. not relying on the installed system at all (because it's broken)

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

hugsie

Member

Registered: 2018-01-26

Posts: 46

Re: Kernel Panic after System Crash

No, i am not.

I booted the live cd and just decrypted my partition and mounted the lvm's volume-root to /mnt and volume-home to /mnt/home