Bug#836282: Fails to uninstall if 3rd party modules are installed: rmdir: failed to remove '/lib/modules/4.7.0-1-amd64': Directory not empty

[Michael Biebl <biebl@debian.org>]

Package: src:linux
Version: 4.7.2-1
Severity: normal

I have some 3rd party modules compiled and installed (which don't use
DKMS).

When I try to uninstall the kernel package, I get
Removing linux-image-4.7.0-1-amd64 (4.7.2-1) ...
Purging configuration files for linux-image-4.7.0-1-amd64 (4.7.2-1) ...
rmdir: failed to remove '/lib/modules/4.7.0-1-amd64': Directory not empty
dpkg: error processing package linux-image-4.7.0-1-amd64 (--purge):
 subprocess installed post-removal script returned error exit status 1
Errors were encountered while processing:
 linux-image-4.7.0-1-amd64
E: Sub-process /usr/bin/dpkg returned an error code (1)


Please consider turning
	rmdir /lib/modules/$version
in postrm into
	rmdir /lib/modules/$version || true

I think the error messages is valuable, so one doesn't forget to clean
up manually, so I'd prefer the above over --ignore-fail-non-empty.


Regards,
Michael

-- Package-specific info:
** Version:
Linux version 4.7.0-1-amd64 (debian-kernel@lists.debian.org) (gcc version 5.4.1 20160803 (Debian 5.4.1-1) ) #1 SMP Debian 4.7.2-1 (2016-08-28)


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (200, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages linux-image-4.7.0-1-amd64 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.125
ii  kmod                                    22-1.1
ii  linux-base                              4.4

Versions of packages linux-image-4.7.0-1-amd64 recommends:
ii  firmware-linux-free  3.4
ii  irqbalance           1.1.0-2

Versions of packages linux-image-4.7.0-1-amd64 suggests:
pn  debian-kernel-handbook  <none>
ii  grub-pc                 2.02~beta2-36
pn  linux-doc-4.7           <none>

Versions of packages linux-image-4.7.0-1-amd64 is related to:
ii  firmware-amd-graphics     20160110-1
pn  firmware-atheros          <none>
pn  firmware-bnx2             <none>
pn  firmware-bnx2x            <none>
pn  firmware-brcm80211        <none>
pn  firmware-cavium           <none>
pn  firmware-intel-sound      <none>
pn  firmware-intelwimax       <none>
pn  firmware-ipw2x00          <none>
pn  firmware-ivtv             <none>
ii  firmware-iwlwifi          20160110-1
pn  firmware-libertas         <none>
ii  firmware-linux-nonfree    20160110-1
ii  firmware-misc-nonfree     20160110-1
pn  firmware-myricom          <none>
pn  firmware-netxen           <none>
pn  firmware-qlogic           <none>
pn  firmware-realtek          <none>
pn  firmware-samsung          <none>
pn  firmware-siano            <none>
pn  firmware-ti-connectivity  <none>
pn  xen-hypervisor            <none>

-- no debconf information