[CRASH] KeyDB 6.3.4 crashed by signal: 11, si_code: 128

[broken-ufa]

Crash report

3651747:3651766:M 15 Dec 2024 17:01:42.551 # KeyDB 6.3.4 crashed by signal: 11, si_code: 128
3651747:3651766:M 15 Dec 2024 17:01:42.551 # Accessing address: (nil)
3651747:3651766:M 15 Dec 2024 17:01:42.551 # Crashed running the instruction at: 0x5b208a59e068

------ STACK TRACE ------
EIP:
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](redisDbPersistentData::prefetchKeysAsync(client*, parsed_command&)+0xbb8) [0x5b208a59e068]

Backtrace:
/lib/x86_64-linux-gnu/libc.so.6(+0x42520) [0x7320ac442520]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](redisDbPersistentData::prefetchKeysAsync(client*, parsed_command&)+0xbb8) [0x5b208a59e068]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](+0x1d196a) [0x5b208a58a96a]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](readQueryFromClient(connection*)+0x39c) [0x5b208a57cd0c]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](connSocketEventHandler(aeEventLoop*, int, void*, int)+0x1e0) [0x5b208a6726e0]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](ProcessEventCore+0xf8) [0x5b208a549338]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](aeProcessEvents+0x17d) [0x5b208a54d3fd]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](aeMain+0x3e) [0x5b208a54da6e]
/usr/bin/keydb-server 0.0.0.0:7000 [cluster](workerThreadMain(void*)+0xfe) [0x5b208a565e9e]
/lib/x86_64-linux-gnu/libc.so.6(+0x94ac3) [0x7320ac494ac3]
/lib/x86_64-linux-gnu/libc.so.6(+0x126850) [0x7320ac526850]

------ REGISTERS ------
3651747:3651766:M 15 Dec 2024 17:01:42.553 #
RAX:4e3ecf33934bbcf8 RBX:00007320ab6b7380
RCX:63306564000000e4 RDX:3963306333636533
RDI:00000000004bbcf8 RSI:0000000000000000
RBP:0000731f9cdea43b RSP:000073209d9fd6e0
R8 :b15ed586df54e1d9 R9 :0000732092ec1b3b
R10:0000000000000003 R11:00005b208aae4010
R12:0000732008df4020 R13:000000000037b8b5
R14:0000732047ab8ca0 R15:0000732008df4020
RIP:00005b208a59e068 EFL:0000000000010206
CSGSFS:002b000000000033
3651747:3651766:M 15 Dec 2024 17:01:42.553 # (000073209d9fd6ef) -> 0000732000003c0b
3651747:3651766:M 15 Dec 2024 17:01:42.553 # (000073209d9fd6ee) -> 0000732000000000
3651747:3651766:M 15 Dec 2024 17:01:42.553 # (000073209d9fd6ed) -> 000073209d9fe978
3651747:3651766:M 15 Dec 2024 17:01:42.553 # (000073209d9fd6ec) -> 000000009c9d3f00
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6eb) -> 0100010100000000
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6ea) -> 000073209d9fd74c
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e9) -> 000000009d9fd838
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e8) -> 0000731f0000001f
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e7) -> 00005b208a55e93c
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e6) -> 0000000000000000
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e5) -> 0000000000000001
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e4) -> 00005b208ac25920
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e3) -> 0000731ed1c12900
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e2) -> 0000731ed1157000
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e1) -> 00005b208ac23c00
3651747:3651766:M 15 Dec 2024 17:01:42.554 # (000073209d9fd6e0) -> 000073209d1cbe80

------ INFO OUTPUT ------
# Server
redis_version:6.3.4
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:b532cd0401cb0da4
redis_mode:cluster
os:Linux 6.8.0-47-generic x86_64
arch_bits:64
multiplexing_api:epoll
atomicvar_api:atomic-builtin
gcc_version:11.2.0
process_id:3651747
process_supervised:no
run_id:65addc608df076bc70cfaafe7649d0fc02af68f5
tcp_port:7000
server_time_usec:1734282102554309
uptime_in_seconds:950579
uptime_in_days:11
hz:200
configured_hz:200
lru_clock:6228854
executable:/usr/bin/keydb-server
config_file:/etc/keydb/keydb-keydb6-master.conf
availability_zone:
features:cluster_mget

# Clients
connected_clients:1228
cluster_connections:46
maxclients:10000
client_recent_max_input_buffer:40976
client_recent_max_output_buffer:237
blocked_clients:0
tracking_clients:0
clients_in_timeout_table:0
current_client_thread:4
thread_0_clients:232
thread_1_clients:274
thread_2_clients:256
thread_3_clients:240
thread_4_clients:229

# Memory
used_memory:5290588048
used_memory_human:4.93G
used_memory_rss:5444034560
used_memory_rss_human:5.07G
used_memory_peak:5311983344
used_memory_peak_human:4.95G
used_memory_peak_perc:99.60%
used_memory_overhead:944531430
used_memory_startup:4582160
used_memory_dataset:4346056618
used_memory_dataset_perc:82.22%
allocator_allocated:5299590496
allocator_active:5384970240
allocator_resident:5498851328
total_system_memory:12542091264
total_system_memory_human:11.68G
used_memory_lua:35840
used_memory_lua_human:35.00K
used_memory_scripts:232
used_memory_scripts_human:232B
number_of_cached_scripts:1
maxmemory:8589934592
maxmemory_human:8.00G
maxmemory_policy:allkeys-lru
allocator_frag_ratio:1.02
allocator_frag_bytes:85379744
allocator_rss_ratio:1.02
allocator_rss_bytes:113881088
rss_overhead_ratio:0.99
rss_overhead_bytes:-54816768
mem_fragmentation_ratio:1.03
mem_fragmentation_bytes:146956632
mem_not_counted_for_evict:0
mem_replication_backlog:268435456
mem_clients_slaves:61536
mem_clients_normal:11510046
mem_aof_buffer:0
mem_allocator:jemalloc-5.2.1
active_defrag_running:0
lazyfree_pending_objects:0
lazyfreed_objects:0
storage_provider:none
available_system_memory:unavailable

# Persistence
loading:0
current_cow_size:0
current_cow_size_age:0
current_fork_perc:0.00
current_save_keys_processed:0
current_save_keys_total:0
rdb_changes_since_last_save:3986672402
rdb_bgsave_in_progress:0
rdb_last_save_time:1733331523
rdb_last_bgsave_status:ok
rdb_last_bgsave_time_sec:0
rdb_current_bgsave_time_sec:-1
rdb_last_cow_size:5259264
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
module_fork_in_progress:0
module_fork_last_cow_size:0

# Stats
total_connections_received:1334816556
total_commands_processed:4597618060
instantaneous_ops_per_sec:8812
total_net_input_bytes:1524763711582
total_net_output_bytes:6201087588836
instantaneous_input_kbps:2609.88
instantaneous_output_kbps:9848.69
rejected_connections:0
sync_full:3
sync_partial_ok:0
sync_partial_err:3
expired_keys:997658892
expired_stale_perc:11.96
expired_time_cap_reached_count:3724
expire_cycle_cpu_milliseconds:13461535
evicted_keys:0
keyspace_hits:686897318
keyspace_misses:5225771
pubsub_channels:0
pubsub_patterns:0
latest_fork_usec:5591
total_forks:1
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
tracking_total_keys:0
tracking_total_items:0
tracking_total_prefixes:0
unexpected_error_replies:0
total_error_replies:50583
dump_payload_sanitizations:0
total_reads_processed:5550668756
total_writes_processed:12794701070
instantaneous_lock_contention:0
avg_lock_contention:2.578125
storage_provider_read_hits:0
storage_provider_read_misses:0

# Replication
role:master
connected_slaves:3
slave0:ip=10.65.60.236,port=7000,state=online,offset=1527791481523,lag=0
slave1:ip=10.65.38.216,port=7000,state=online,offset=1527790525992,lag=1
slave2:ip=10.65.60.225,port=7000,state=online,offset=1527791889994,lag=0
master_failover_state:no-failover
master_replid:7abf002c04118366a9bc5746665fafeb9210c354
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:1527792373847
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:268435456
repl_backlog_first_byte_offset:1527523938392
repl_backlog_histlen:268435456

# CPU
used_cpu_sys:584433.366510
used_cpu_user:644309.727038
used_cpu_sys_children:0.017065
used_cpu_user_children:0.002328
server_threads:5
long_lock_waits:45
used_cpu_sys_main_thread:120857.872380
used_cpu_user_main_thread:138528.453192

# Commandstats
cmdstat_psync:calls=3,usec=530,usec_per_call=176.67,rejected_calls=0,failed_calls=0
cmdstat_expire:calls=41563189,usec=87843903,usec_per_call=2.11,rejected_calls=0,failed_calls=0
cmdstat_exists:calls=17320,usec=42118,usec_per_call=2.43,rejected_calls=0,failed_calls=0
cmdstat_info:calls=501503,usec=20716678,usec_per_call=41.31,rejected_calls=0,failed_calls=0
cmdstat_get:calls=691478679,usec=1657758592,usec_per_call=2.40,rejected_calls=3612,failed_calls=0
cmdstat_hmset:calls=41586110,usec=606908293,usec_per_call=14.59,rejected_calls=0,failed_calls=0
cmdstat_config:calls=31686,usec=2863407,usec_per_call=90.37,rejected_calls=0,failed_calls=0
cmdstat_hset:calls=187,usec=1688,usec_per_call=9.03,rejected_calls=0,failed_calls=0
cmdstat_lrem:calls=270,usec=3696,usec_per_call=13.69,rejected_calls=0,failed_calls=0
cmdstat_lpush:calls=270,usec=2535,usec_per_call=9.39,rejected_calls=0,failed_calls=0
cmdstat_latency:calls=63372,usec=248096,usec_per_call=3.91,rejected_calls=0,failed_calls=31686
cmdstat_client:calls=31686,usec=80555,usec_per_call=2.54,rejected_calls=0,failed_calls=0
cmdstat_replping:calls=3,usec=2,usec_per_call=0.67,rejected_calls=0,failed_calls=0
cmdstat_slowlog:calls=63372,usec=144195,usec_per_call=2.28,rejected_calls=0,failed_calls=0
cmdstat_cluster:calls=565702385,usec=25144666115,usec_per_call=44.45,rejected_calls=0,failed_calls=0
cmdstat_hgetall:calls=627090,usec=7338680,usec_per_call=11.70,rejected_calls=0,failed_calls=0
cmdstat_eval:calls=368208,usec=12838136,usec_per_call=34.87,rejected_calls=0,failed_calls=0
cmdstat_set:calls=2621800863,usec=25946028190,usec_per_call=9.90,rejected_calls=15211,failed_calls=0
cmdstat_del:calls=631054899,usec=4819175377,usec_per_call=7.64,rejected_calls=74,failed_calls=0
cmdstat_replconf:calls=2726966,usec=2645843,usec_per_call=0.97,rejected_calls=0,failed_calls=0

# Errorstats
errorstat_CLUSTERDOWN:count=18897
errorstat_ERR:count=31686

# Cluster
cluster_enabled:1

# Keyspace
db0:keys=10952589,expires=10950238,avg_ttl=58889065,cached_keys=10952589

# KeyDB
mvcc_depth:0

------ CLIENT LIST OUTPUT ------
cutted

------ FAST MEMORY TEST ------
3651747:3651766:M 15 Dec 2024 17:01:42.574 # main thread terminated
3651747:3651766:M 15 Dec 2024 17:01:42.574 # Bio thread for job type #0 terminated
3651747:3651766:M 15 Dec 2024 17:01:42.574 # Bio thread for job type #1 terminated
3651747:3651766:M 15 Dec 2024 17:01:42.574 # Bio thread for job type #2 terminated

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: _ZN21redisDbPersistentData17prefetchKeysAsyncEP6clientR14parsed_command (base: 0x5b208a59d4b0)
Module: /usr/bin/keydb-server 0.0.0.0:7000 [cluster] (base 0x5b208a3b9000)
$ xxd -r -p /tmp/dump.hex /tmp/dump.bin
$ objdump --adjust-vma=0x5b208a59d4b0 -D -b binary -m i386:x86-64 /tmp/dump.bin
------
3651747:3651766:M 15 Dec 2024 17:01:42.574 # dump of function (hexdump of 3128 bytes):
f30f1efa4157415641554154554889d5534881ecb8040000488974241864488b04252800000048898424a804000031c048837f38000f84c5000000488b4424184989fe4885c00f84340100008b9894420000648b142500e3ffff4c8da09442000083faff0f84de0a00
0039d37411488d052b8368008b1085d20f840d0c0000488d052a836800be010000004889c74889442428e808e5510085c00f85e5000000488b4424184c89e78b9898420000c7809842000001000000e833e55100eb0b90488b7c2428e826e55100e8f1c1faff31f64c
89e7e8c7e4510085c074e331f64c89e7e8d9e35100488b442418899898420000e98e000000660f1f840000000000837a08017e4a4c8b22498b3c240fb607488d6f1383e0f03c807404488b6f10488d35dcf353004889efe872eff3ff85c00f8502010000488b442418
488b581848837b58000f8419010000660f1f440000488b8424a804000064482b0425280000000f85ec0a00004881c4b80400005b5d415c415d415e415fc30f1f8000000000e83bc1faff4c8dbc249000000031c0b9820000004c89fff348ab488b4500c784249c0400
0000010000488b100fb6024c8d621383e0f03c8074044c8b6210488d058b6568004c89e7488b004c8b6828498b4500ff104889c2488d4424584c8d4424604531c94889c14c89e64c89ef4c894424104889442420e8234ffbff4885c07420488b78084885ff74178b57
10448b450889d0f7d80f48c24139c00f8dae000000488d3d87816800e8c2e35100e91dffffff0f1f440000488d3511d856004889efe859eef3ff85c00f8501ffffff488b442418488b581848837b58000f85edfeffff498b4424080fb610488d781383e2f080fa8074
04488b7810e8b068fbff488b531031f64889f148c1e105488b7c11204889f148c1e1054801ca488b52104885d20f85ff080000488b531048837a50ff0f8498feffff4883fe010f848efeffffbe01000000ebbd0f1f8000000000488b75004c89f94489c2e80116ffff
85c00f8ef108000048c744242800000000489831db48c7442408000000004c8d2c850000000048c744244000000000eb094883c3044939dd7467488b84249004000048631418488b45004c8b24d0410fb60424498d74241383e0f03c807405498b7424104c89f7e865
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=== KEYDB BUG REPORT END. Make sure to include from START to END. ===

Aditional information

1. OS distribution and version

root@keydb6-master:~# uname -a
Linux keydb6-master 6.8.0-47-generic #47~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Oct  2 16:16:55 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
root@keydb6-master:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.5 LTS
Release:        22.04
Codename:       jammy

2. Steps to reproduce (if any)
   It happens on master node
   On slaves we see this:

800:823:S 15 Dec 2024 17:01:43.374 # Connection with master lost.
800:823:S 15 Dec 2024 17:01:43.374 * Caching the disconnected master state.
800:823:S 15 Dec 2024 17:01:43.374 * Reconnecting to MASTER 10.65.60.221:7000
800:823:S 15 Dec 2024 17:01:43.374 * MASTER <-> REPLICA sync started
800:823:S 15 Dec 2024 17:01:43.374 * Non blocking connect for SYNC fired the event.
800:823:S 15 Dec 2024 17:01:43.402 # Error reply to PING from master: '-Reading from master: Connection reset by peer'
800:823:S 15 Dec 2024 17:01:44.013 * Connecting to MASTER 10.65.60.221:7000
800:823:S 15 Dec 2024 17:01:44.013 * MASTER <-> REPLICA sync started
800:823:S 15 Dec 2024 17:01:44.013 * Non blocking connect for SYNC fired the event.
800:823:S 15 Dec 2024 17:01:44.013 * Master replied to PING, replication can continue...
800:823:S 15 Dec 2024 17:01:44.014 * Trying a partial resynchronization (request 7abf002c04118366a9bc5746665fafeb9210c354:1527792409566).
800:823:S 15 Dec 2024 17:01:45.991 * Full resync from master: ae4144af981accc2621e8c90c002c880d1811d46:1704442
800:823:S 15 Dec 2024 17:01:45.991 * Discarding previously cached master state.
800:823:S 15 Dec 2024 17:01:46.033 * MASTER <-> REPLICA sync: receiving streamed RDB from master with EOF to disk
800:823:S 15 Dec 2024 17:01:46.064 * MASTER <-> REPLICA sync: Flushing old data
800:823:S 15 Dec 2024 17:02:09.357 * MASTER <-> REPLICA sync: Loading DB in memory
800:823:S 15 Dec 2024 17:02:09.447 * Loading RDB produced by version 6.3.4
800:823:S 15 Dec 2024 17:02:09.448 * RDB age 24 seconds
800:823:S 15 Dec 2024 17:02:09.448 * RDB memory usage when created 333.24 Mb
800:823:S 15 Dec 2024 17:02:09.452 # Done loading RDB, keys loaded: 0, keys expired: 0.
800:823:S 15 Dec 2024 17:02:09.452 * MASTER <-> REPLICA sync: Finished with success

activerehashing is already turned off

root@keydb6-master:~# keydb-cli -p 7000 config get activerehashing
1) "activerehashing"
2) "no"