zmalloc: Out of memory trying to allocate

$ src/redis-server 
[7835] 13 Mar 17:37:08 # Warning: no config file specified, using the default config. In order to specify a config file use 'redis-server /path/to/redis.conf'
[7835] 13 Mar 17:37:08 * Server started, Redis version 2.4.8
zmalloc: Out of memory trying to allocate 26 bytes

・redis-tools/zmalloc.c at master · antirez/redis-tools
→src/zmalloc.c　に該当ソース


・Redis server shutdown with out of memory error when its memory usage reaches around 2GB. - Redis DB | Google グループ