I just started using Redis 4.0.1 and it is crashing frequently. I am using cuckoofilter redis module.
=== REDIS BUG REPORT START: Cut & paste starting from here ===
7840:M 31 Aug 12:14:13.079 # Redis 4.0.1 crashed by signal: 11
7840:M 31 Aug 12:14:13.079 # Crashed running the instuction at: 0x559c10c58bbc
7840:M 31 Aug 12:14:13.079 # Accessing address: 0x38
7840:M 31 Aug 12:14:13.079 # Failed assertion: <no assertion failed> (<no file>:0)
------ STACK TRACE ------
EIP:
redis-server 127.0.0.1:6379(freeModuleObject+0xc)[0x559c10c58bbc]
Backtrace:
redis-server 127.0.0.1:6379(logStackTrace+0x4a)[0x559c10c875aa]
redis-server 127.0.0.1:6379(sigsegvHandler+0xc3)[0x559c10c87d73]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x11670)[0x7f4a80452670]
redis-server 127.0.0.1:6379(freeModuleObject+0xc)[0x559c10c58bbc]
redis-server 127.0.0.1:6379(decrRefCount+0x65)[0x559c10c58c55]
redis-server 127.0.0.1:6379(+0x2fd4e)[0x559c10c41d4e]
redis-server 127.0.0.1:6379(dictDelete+0xb)[0x559c10c4226b]
redis-server 127.0.0.1:6379(dbSyncDelete+0x28)[0x559c10c5c7a8]
redis-server 127.0.0.1:6379(delGenericCommand+0x76)[0x559c10c5dc16]
redis-server 127.0.0.1:6379(call+0xae)[0x559c10c461ae]
redis-server 127.0.0.1:6379(processCommand+0x3bf)[0x559c10c468cf]
redis-server 127.0.0.1:6379(processInputBuffer+0x131)[0x559c10c569c1]
redis-server 127.0.0.1:6379(aeProcessEvents+0x143)[0x559c10c3fed3]
redis-server 127.0.0.1:6379(aeMain+0x2b)[0x559c10c4028b]
redis-server 127.0.0.1:6379(main+0x4db)[0x559c10c3ce2b]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7f4a8009a3f1]
redis-server 127.0.0.1:6379(_start+0x2a)[0x559c10c3d14a]
------ INFO OUTPUT ------
# Server
redis_version:4.0.1
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:3cfa1cfae37ccb75
redis_mode:standalone
os:Linux 4.10.0-32-generic x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:6.3.0
process_id:7840
run_id:e8cda7c00f58ce28e24ea06830556bf04f428334
tcp_port:6379
uptime_in_seconds:32
uptime_in_days:0
hz:10
lru_clock:10989629
executable:/etc/redis/redis-server
config_file:/etc/redis/6379.conf
# Clients
connected_clients:1
client_longest_output_list:0
client_biggest_input_buf:0
blocked_clients:0
# Memory
used_memory:895688
used_memory_human:874.70K
used_memory_rss:4468736
used_memory_rss_human:4.26M
used_memory_peak:895688
used_memory_peak_human:874.70K
used_memory_peak_perc:100.12%
used_memory_overhead:815438
used_memory_startup:765704
used_memory_dataset:80250
used_memory_dataset_perc:61.74%
total_system_memory:33628082176
total_system_memory_human:31.32G
used_memory_lua:37888
used_memory_lua_human:37.00K
maxmemory:0
maxmemory_human:0B
maxmemory_policy:noeviction
mem_fragmentation_ratio:4.99
mem_allocator:jemalloc-4.0.3
active_defrag_running:0
lazyfree_pending_objects:0
# Persistence
loading:0
rdb_changes_since_last_save:2
rdb_bgsave_in_progress:0
rdb_last_save_time:1504161821
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:-1
rdb_current_bgsave_time_sec:-1
rdb_last_cow_size:0
aof_enabled:0
aof_rewrite_in_progress:0
aof_rewrite_scheduled:0
aof_last_rewrite_time_sec:-1
aof_current_rewrite_time_sec:-1
aof_last_bgrewrite_status:ok
aof_last_write_status:ok
aof_last_cow_size:0
# Stats
total_connections_received:1
total_commands_processed:7
instantaneous_ops_per_sec:0
total_net_input_bytes:276
total_net_output_bytes:118
instantaneous_input_kbps:0.02
instantaneous_output_kbps:0.00
rejected_connections:0
sync_full:0
sync_partial_ok:0
sync_partial_err:0
expired_keys:0
evicted_keys:0
keyspace_hits:0
keyspace_misses:0
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:0
migrate_cached_sockets:0
slave_expires_tracked_keys:0
active_defrag_hits:0
active_defrag_misses:0
active_defrag_key_hits:0
active_defrag_key_misses:0
# Replication
role:master
connected_slaves:0
master_replid:b75cd6445193a52be3559f6dc240fa0256f9f5d5
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0
# CPU
used_cpu_sys:0.02
used_cpu_user:0.00
used_cpu_sys_children:0.00
used_cpu_user_children:0.00
# Commandstats
cmdstat_module:calls=1,usec=107,usec_per_call=107.00
cmdstat_del:calls=3,usec=30,usec_per_call=10.00
# Cluster
cluster_enabled:0
# Keyspace
db0:keys=1,expires=0,avg_ttl=0
------ CLIENT LIST OUTPUT ------
id=2 addr=127.0.0.1:34938 fd=7 name= age=27 idle=0 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=del
------ CURRENT CLIENT INFO ------
id=2 addr=127.0.0.1:34938 fd=7 name= age=27 idle=0 flags=N db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=del
argv[0]: 'DEL'
argv[1]: 'test'
------ REGISTERS ------
7840:M 31 Aug 12:14:13.080 #
RAX:0000000000000000 RBX:00007f4a7f8285a0
RCX:0000000000000005 RDX:0000559c10d2bc94
RDI:00007f4a7f821f88 RSI:00007f4a7f828590
RBP:0000000000000000 RSP:00007ffd9fe038a0
R8 :000000000000009f R9 :00007f4a7f80d5a0
R10:00007f4a7fe000c0 R11:0000559c10d418c0
R12:0000000000000000 R13:00007f4a7f8182a0
R14:00007f4a7f821fe8 R15:00007f4a7f8182b0
RIP:0000559c10c58bbc EFL:0000000000010217
CSGSFS:002b000000000033
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038af) -> 0000559c10c4226b
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038ae) -> 0000559c10d3ade6
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038ad) -> 0000000000000000
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038ac) -> 0000000000000000
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038ab) -> 0000000000000001
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038aa) -> 00007f4a7f8d6018
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038a9) -> 0000000000000000
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038a8) -> 000000000000b000
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038a7) -> 0000000000000008
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038a6) -> 000000007f80aba0
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038a5) -> 00007f4a7f821fe8
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038a4) -> 000000000000e000
7840:M 31 Aug 12:14:13.080 # (00007ffd9fe038a3) -> 0000559c10c41d4e
7840:M 31 Aug 12:14:13.081 # (00007ffd9fe038a2) -> 00007f4a7f8d602b
7840:M 31 Aug 12:14:13.081 # (00007ffd9fe038a1) -> 0000559c10c58c55
7840:M 31 Aug 12:14:13.081 # (00007ffd9fe038a0) -> 00007f4a7f828590
------ FAST MEMORY TEST ------
7840:M 31 Aug 12:14:13.081 # Bio thread for job type #0 terminated
7840:M 31 Aug 12:14:13.081 # Bio thread for job type #1 terminated
7840:M 31 Aug 12:14:13.081 # Bio thread for job type #2 terminated
*** Preparing to test memory region 559c10f76000 (98304 bytes)
*** Preparing to test memory region 559c12313000 (135168 bytes)
*** Preparing to test memory region 7f4a7dffe000 (8388608 bytes)
*** Preparing to test memory region 7f4a7e7ff000 (8388608 bytes)
*** Preparing to test memory region 7f4a7f000000 (8388608 bytes)
*** Preparing to test memory region 7f4a7f800000 (2097152 bytes)
*** Preparing to test memory region 7f4a7fe00000 (2097152 bytes)
*** Preparing to test memory region 7f4a8043d000 (16384 bytes)
*** Preparing to test memory region 7f4a8065b000 (16384 bytes)
*** Preparing to test memory region 7f4a80d5e000 (8192 bytes)
*** Preparing to test memory region 7f4a80d8e000 (12288 bytes)
*** Preparing to test memory region 7f4a80d93000 (4096 bytes)
.O.O.O.O.O.O.O.O.O.O.O.O
Fast memory test PASSED, however your memory can still be broken. Please run a memory test for several hours if possible.
------ DUMPING CODE AROUND EIP ------
Symbol: freeModuleObject (base: 0x559c10c58bb0)
Module: redis-server 127.0.0.1:6379 (base 0x559c10c12000)
$ xxd -r -p /tmp/dump.hex /tmp/dump.bin
$ objdump --adjust-vma=0x559c10c58bb0 -D -b binary -m i386:x86-64 /tmp/dump.bin
------
7840:M 31 Aug 12:14:13.189 # dump of function (hexdump of 140 bytes):
53488b5f08488b03488b7b08ff50384889df5be94848ffff0f1f8400000000008b47043dffffff7f740683c001894704f3c30f1f4000662e0f1f840000000000538b47044889fb83f801741c85c00f8ec00000003dffffff7f740683e8018947045bc30f1f4400000fb60f89c883e00f3c05777c488d1569300d000fb6c0486304824801d0ffe0660f1f8400
=== REDIS BUG REPORT END. Make sure to include from START to END. ===
Comment From: itamarhaber
This looks like an issue with the module itself, not Redis. Please report to the module's repo