Package: dkms Version: 2.8.7-2 Severity: important Tags: patch
Hi,Due to two typos in /etc/kernel/prerm.d/dkms, modules built with DKMS are not deleted anymore when a kernel package is removed.
The script fails to build the two variables "$name" and "$vers" because the final pipe to "cut -d" is put outside the backquotes. The call to "dkms remove" then fails with an error.
Attached is a small patch to fix the problem in the prerm script.It would also be nice to advise users (with a note on package upgrade for example) to clean up old leftover modules, or even better, run a script to do it automatically (basically the logic would list the installed modules with dkms status, and clear them if that's the only file left in /lib/modules/<kernel_version>/). I can write it for you if you want.
Regards, -- Raphaël Halimi
--- /etc/kernel/prerm.d/dkms.orig 2021-10-01 11:34:34.000000000 +0200
+++ /etc/kernel/prerm.d/dkms 2022-02-15 15:19:49.616611838 +0100
@@ -13,8 +13,8 @@
if [ -x /usr/sbin/dkms ]; then
while read line; do
- name=`echo "$line" | awk '{print $1}' | sed 's/,$//'` | cut -d'/' -f1
- vers=`echo "$line" | awk '{print $1}' | sed 's/,$//'` | cut -d'/' -f2
+ name=`echo "$line" | awk '{print $1}' | sed 's/,$//' | cut -d'/' -f1`
+ vers=`echo "$line" | awk '{print $1}' | sed 's/,$//' | cut -d'/' -f2`
arch=`echo "$line" | awk '{print $3}' | sed 's/:$//'`
echo "dkms: removing: $name $vers ($inst_kern) ($arch)" >&2
dkms remove -m $name -v $vers -k $inst_kern -a $arch
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