DPKG ends up with error

[Andreas Brolund]

Using Jessie distribution and wanted to update.
The following steps has been done:

$ sudo apt-get update
$ sudo apt-get upgrade

The following error was reported:

Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  pi-bluetooth
The following packages will be upgraded:
  ca-certificates dbus dbus-x11 file firefox-esr iceweasel libc-bin libc-dev-bin libc6 libc6-dbg libc6-dev libcairo-gobject2 libcairo2 libdbus-1-3 libdbus-1-dev libfcgi-perl libgnutls-deb0-28
  libgnutls-openssl27 libgudev-1.0-0 libhogweed2 libio-socket-ssl-perl libmagic1 libmpg123-0 libmysqlclient18 libnettle4 libpam-modules libpam-modules-bin libpam-runtime libpam-systemd libpam0g
  libpng12-0 libpng12-dev libsystemd-login0 libsystemd0 libtiff5 libudev1 libwmf0.2-7 libxpm4 locales multiarch-support mysql-common mysql-server-core-5.5 python-crypto sed systemd systemd-sysv tzdata
  udev
48 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
1 not fully installed or removed.
Need to get 40.3 MB/68.1 MB of archives.
After this operation, 158 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://mirrordirector.raspbian.org/raspbian/ jessie/main libxpm4 armhf 1:3.5.12-0+deb8u1 [43.7 kB]
Get:2 http://mirrordirector.raspbian.org/raspbian/ jessie/main firefox-esr armhf 45.7.0esr-1~deb8u1 [40.1 MB]
Get:3 http://mirrordirector.raspbian.org/raspbian/ jessie/main iceweasel all 45.7.0esr-1~deb8u1 [118 kB]
Fetched 40.3 MB in 12s (3,353 kB/s)
Extracting templates from packages: 100%
Preconfiguring packages ...
Setting up bash (4.3-11+deb8u1) ...
/var/lib/dpkg/info/bash.postinst: line 26: /usr/bin/update-menus: cannot execute binary file: Exec format error
dpkg: error processing package bash (--configure):
 subprocess installed post-installation script returned error exit status 126
Errors were encountered while processing:
 bash
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)

Found no way to make update work again, other then restore system.
A way to repair dpkd would be highly appreciated.

Workaround:

Restore system from backup then

$ sudo apt-mark hold bash
$ sudo apt-get update
$ sudo apt-get upgrade

makes update working but if I unhold bash I see the same issue

System info:
Raspberry 2b
Linux raspberrypi 4.4.38-v7+ #938 SMP Thu Dec 15 15:22:21 GMT 2016 armv7l GNU/Linux
dpkg -s libc6 | grep ^Version -> Version: 2.19-18+deb8u7