(Version 2.4.14) crashed by signal 11

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May 22, 2015, 2:00:53 AM5/22/15
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Hello,
we are running redis version 2.4.14 on a debian machine (3.2.0-4-amd64 #1 SMP Debian 3.2.68-1+deb7u1 x86_64 GNU/Linux). 

redis log has the bug report included below. i see that this version is very outdated compared to the current stable version. although we can upgrade, i would like to know the real reason for crash? kindly let us know. Thanks in advance.

--David


[6233] 21 May 18:06:58 # === REDIS BUG REPORT START: Cut & paste starting from here ===
[6233] 21 May 18:06:58 #     Redis 2.4.14 crashed by signal: 11
[6233] 21 May 18:06:58 #     Failed assertion: <no assertion failed> (<no file>:0)
[6233] 21 May 18:06:58 # --- STACK TRACE
[6233] 21 May 18:06:58 # /usr/bin/redis-server(rdbSaveStringObject+0x4) [0x41e1c4]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(rdbSaveStringObject+0x4) [0x41e1c4]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(rdbSaveObject+0x1b9) [0x41e4b9]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(rdbSave+0x318) [0x41ea48]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(rdbSaveBackground+0x88) [0x41ec48]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(serverCron+0x4e7) [0x410c57]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(aeProcessEvents+0x1db) [0x40d5eb]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(aeMain+0x2e) [0x40d7be]
[6233] 21 May 18:06:58 # /usr/bin/redis-server(main+0x154) [0x40c734]
[6233] 21 May 18:06:58 # /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fb7dd715ead]
[6233] 21 May 18:06:58 # /usr/bin/redis-server() [0x40c8a5]
[6233] 21 May 18:06:58 # --- INFO OUTPUT
[6233] 21 May 18:06:58 # redis_version:2.4.14
redis_git_sha1:00000000
redis_git_dirty:0
arch_bits:64
multiplexing_api:epoll
gcc_version:4.6.2
process_id:6233
uptime_in_seconds:365275
uptime_in_days:4
lru_clock:614679
used_cpu_sys:67.29
used_cpu_user:178.20
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
connected_clients:35
connected_slaves:0
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
used_memory:23883659784
used_memory_human:22.24G
used_memory_rss:16626999296
used_memory_peak:25309059096
used_memory_peak_human:23.57G
mem_fragmentation_ratio:0.70
mem_allocator:jemalloc-2.2.5
loading:0
aof_enabled:0
changes_since_last_save:4334578
bgsave_in_progress:0
last_save_time:1432210090
bgrewriteaof_in_progress:0
total_connections_received:59470
total_commands_processed:426964092
expired_keys:5772973
evicted_keys:0
keyspace_hits:79830723
keyspace_misses:973
pubsub_channels:0
pubsub_patterns:2
latest_fork_usec:723010
vm_enabled:0
role:master
db0:keys=14775488,expires=14775482

[6233] 21 May 18:06:58 # --- CLIENT LIST OUTPUT
[6233] 21 May 18:06:58 # addr=127.0.0.1:50282 fd=5 idle=42019 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:50293 fd=6 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:50296 fd=7 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=publish
addr=127.0.0.1:50298 fd=8 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=brpop
addr=127.0.0.1:50319 fd=9 idle=1726 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=unwatch
addr=127.0.0.1:50321 fd=10 idle=42018 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=sadd
addr=127.0.0.1:50324 fd=11 idle=42018 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=sadd
addr=127.0.0.1:50326 fd=12 idle=1668 flags=N db=0 sub=0 psub=1 qbuf=0 obl=0 oll=0 events=r cmd=psubscribe
addr=127.0.0.1:50328 fd=13 idle=42018 flags=N db=0 sub=0 psub=1 qbuf=0 obl=0 oll=0 events=r cmd=psubscribe
addr=127.0.0.1:50330 fd=14 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=lpush
addr=127.0.0.1:50477 fd=15 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=lpush
addr=127.0.0.1:52295 fd=18 idle=1824 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:54957 fd=27 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:54966 fd=16 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55022 fd=41 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55024 fd=42 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55077 fd=44 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55080 fd=45 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55082 fd=46 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55084 fd=47 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55086 fd=48 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55088 fd=49 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55090 fd=50 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55092 fd=51 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55094 fd=52 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55096 fd=53 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55098 fd=54 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55100 fd=55 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55102 fd=56 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55104 fd=57 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55106 fd=58 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55119 fd=17 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55121 fd=19 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55123 fd=20 idle=1667 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec
addr=127.0.0.1:55128 fd=21 idle=1668 flags=N db=0 sub=0 psub=0 qbuf=0 obl=0 oll=0 events=r cmd=exec

[6233] 21 May 18:06:58 # === REDIS BUG REPORT END. Make sure to include from START to END. ===

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