Linux 4.18 kernel panic

[lbolla]

System

• xuname:
  Void 4.17.19_1 x86_64 GenuineIntel uptodate rFFF

• package:
  linux-4.18

Expected behavior

Kernel starts as expected

Actual behavior

I get a kernel panic on startup with message:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Starting kernel 4.17.19 works.

I noticed that Grub's /boot/grub/grub.cfg is different between 4.17 series and 4.18.
E.g.

                echo    'Loading Linux 4.17.19_1 ...'
                linux   /vmlinuz-4.17.19_1 root=/dev/mapper/pool-root ro  loglevel=4 slub_debug=P page_poison=1 rd.auto=1 cryptdevice=/dev/sda2 root=/dev/mapper/pool-root
                echo    'Loading initial ramdisk ...'
                initrd  /initramfs-4.17.19_1.img

but

                echo    'Loading Linux 4.18.6_1 ...'
                linux   /vmlinuz-4.18.6_1 root=/dev/mapper/pool-root ro single 
        }

Note the missing initrd command.
I tried to run grub-mkconfig manually and nothing changed.
/initramfs files are present in /boot for all images.

Steps to reproduce the behavior

Just xi -u the latest kernel.

[Hoshpak]

This usually happens when /boot runs out of disk space while generating the initrd. Please check that enough disk space is available and regenerate the initrd with xbps-reconfigure -f linux4.18.

[lbolla]

Thanks! That seems indeed to be the case. Is there a recommended way to drop obsolete kernel images from /boot?

[Hoshpak]

Yes, it's the vkpurge script that comes in the base-files package. It can either remove specific kernel versions or all obsolete (= not the currently running kernel, not held by an installed linux package) kernels.

[lbolla]

Thanks, that did the trick.