After months of flawless operation TvHeadend stopped working, it crashes on boot:
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: Signal: 6 in PRG: /usr/bin/tvheadend (4.0.9-3~g91263a6~wily) [aeeabb0a7dd3146805849e86f2b1b59df32f33fe] CWD: /
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: Fault address 0x2ac (N/A)
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: Loaded libraries: /lib/i386-linux-gnu/libssl.so.1.0.0 /lib/i386-linux-gnu/libcrypto.so.1.0.0 /lib/i386-linux-gnu/libz.so.1 /usr/lib/i386-linux-gnu/liburiparser.so.1 /usr/lib/i386-linux-gnu/libavahi-common.so.3 /usr/lib/i386-linux-gnu/libavahi-client.so.3 /lib/i386-linux-gnu/libdbus-1.so.3 /lib/i386-linux-gnu/libdl.so.2 /lib/i386-linux-gnu/libpthread.so.0 /lib/i386-linux-gnu/libm.so.6 /lib/i386-linux-gnu/librt.so.1 /lib/i386-linux-gnu/libc.so.6 /lib/i386-linux-gnu/libsystemd.so.0 /lib/ld-linux.so.2 /lib/i386-linux-gnu/liblzma.so.5 /lib/i386-linux-gnu/libgcrypt.so.20 /lib/i386-linux-gnu/libgcc_s.so.1 /lib/i386-linux-gnu/libgpg-error.so.0 /lib/i386-linux-gnu/libnss_compat.so.2 /lib/i386-linux-gnu/libnsl.so.1 /lib/i386-linux-gnu/libnss_nis.so.2 /lib/i386-linux-gnu/libnss_files.so.2
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: Register dump [19]: bfce30f800000033bfce30f800000000bfce30f80000007bbfce30f80000007bbfce30f8b7428000bfce30f83afd775dbfce30f800000000bfce30f8bfce3114bfce30f8000002acbfce30f800000006bfce30f8000002acbfce30f800000000bfce30f800000000bfce30f800000000bfce30f8b77b7be8bfce30f800000073bfce30f800000206bfce30f8bfce3114bfce30f80000007b
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: STACKTRACE
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: ??:0 0x8083afa
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH:
kernel_rt_sigreturn+0x0 ()
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH:
kernel_vsyscall+0x10 ()
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: gsignal+0x47 (/lib/i386-linux-gnu/libc.so.6)
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: abort+0x149 (/lib/i386-linux-gnu/libc.so.6)
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: ??:0 0x8055e49
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: ??:0 0x80af213
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: ??:0 0x80b0e8c
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: ??:0 0x80b6a07
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH: ??:0 0x804f1aa
Mar 28 09:21:21 tvheadend tvheadend[684]: CRASH:libc_start_main+0xde (/lib/i386-linux-gnu/libc.so.6)
Any suggestions on how to solve this ?