Разобраться, почему redis выдает panic и починить

[18676] 24 Dec 10:59:02 # /usr/sbin/redis-server(_redisPanic+0x57) [0x80734f7]

[18676] 24 Dec 10:59:02 # /usr/sbin/redis-server(rdbLoadObject+0x553) [0x80621c3]

[18676] 24 Dec 10:59:02 # /usr/sbin/redis-server(rdbLoad+0x18b) [0x80623cb]

[18676] 24 Dec 10:59:02 # /usr/sbin/redis-server(main+0x17d) [0x8055f0d]

[18676] 24 Dec 10:59:02 # /lib/libc.so.6(__libc_start_main+0xdc) [0x21ce9c]

[18676] 24 Dec 10:59:02 # /usr/sbin/redis-server [0x8050231]

[18684] 24 Dec 10:59:05 * Server started, Redis version 2.2.12

[18684] 24 Dec 10:59:05 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.

[18684] 24 Dec 10:59:05 # !!! Software Failure. Press left mouse button to continue

[18684] 24 Dec 10:59:05 # Guru Meditation: "Unknown object type" #rdb.c:843

[18684] 24 Dec 10:59:05 # (forcing SIGSEGV in order to print the stack trace)

[18684] 24 Dec 10:59:05 # ======= Ooops! Redis 2.2.12 got signal: -11- =======

[18684] 24 Dec 10:59:05 # redis_version:2.2.12

Нужно разобраться в чем проблема и починить/