PM2 crashes with SIGSEGV(backtrace included)

What's going wrong?

SIGSEGV signal on pm2

How could we reproduce this issue?

I don't know

Supporting information

My app : pm2 cluster mode
pm2 version 4.4.1
nodejs version 10.22.0

backtrace log
frame #7: 0x000021dda725be1d
frame #8: 0x000021dda797c7e0 (anonymous)(this=0xb0de9c026f1:, 0x3dbda182251:<Number: 1.482158>, 0x3dbda182241:<Number: 1.468564>) at /usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils/metrics/histogram.js:55:28 fn=0x000003dbda182201
frame #9: 0x000021dda797ce7c QuickSort(this=0xb0de9c026f1:, 0x3dbda182301:<Array: length=1028>, <Smi: 830>, <Smi: 849>) at native array.js:1:10 fn=0x000003dbda1822c1
frame #10: 0x000021dda797d15e QuickSort(this=0xb0de9c026f1:, 0x3dbda182301:<Array: length=1028>, <Smi: 0>, <Smi: 1028>) at native array.js:1:10 fn=0x000003dbda1822c1
frame #11: 0x000021dda77c98aa InnerArraySort(this=0xb0de9c026f1:, 0x3dbda182301:<Array: length=1028>, <Smi: 1028>, 0x3dbda182201:<function: (anonymous) at /usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils/metrics/histogram.js:55:28>) at native array.js:1:10 fn=0x0000312a690062c9
frame #12: 0x000021dda77d5785 sort(this=0x3dbda182301:<Array: length=1028>, 0x3dbda182201:<function: (anonymous) at /usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils/metrics/histogram.js:55:28>) at native array.js:1:10 fn=0x0000312a690058a1
frame #13: 0x000021dda79b93ad handler(this=0xf45a972aa41:<Object: Object>) at /usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/metrics/eventLoopMetrics.js:77:31 fn=0x00000f45a972db99
frame #14: 0x000021dda77c9b9e timer.setInterval(this=0x3f36612726a1:<Object: Timeout>) at /usr/lib/node_modules/pm2/node_modules/@pm2/io/build/main/services/metrics.js:54:34 fn=0x00003f3661272891
frame #15: 0x000021dda77c306d processTimers(this=0x17f3d1404ed1:<Object: Timer>, <Smi: 109849056>) at timers.js:98:18 fn=0x00002f2519805149
frame #16: 0x000021dda720ee75
frame #17: 0x000021dda72092c1

PM2 report

PM2 | 2020-09-20T12:25:29: PM2 log: Worker Interval : 30000
PM2 | 2020-09-20T12:25:29: PM2 log: Process dump file : /root/.pm2/dump.pm2
PM2 | 2020-09-20T12:25:29: PM2 log: Concurrent actions : 2
PM2 | 2020-09-20T12:25:29: PM2 log: SIGTERM timeout : 1600
PM2 | 2020-09-20T12:25:29: PM2 log: ===============================================================================
PM2 | 2020-09-20T12:25:30: PM2 log: App [pm2-logrotate:0] starting in -fork mode-
PM2 | 2020-09-20T12:25:30: PM2 log: App [pm2-logrotate:0] online
PM2 | 2020-09-20T12:25:31: PM2 log: [Watch] Start watching cagent
PM2 | 2020-09-20T12:25:31: PM2 log: App [cagent:1] starting in -cluster mode-
PM2 | 2020-09-20T12:25:31: PM2 log: App [cagent:1] online
PM2 | 2020-09-20T12:25:32: PM2 log: [Watch] Start watching cagent
PM2 | 2020-09-20T12:25:32: PM2 log: App [cagent:2] starting in -cluster mode-
PM2 | 2020-09-20T12:25:32: PM2 log: App [cagent:2] online
PM2 | 2020-09-20T12:25:32: PM2 log: [Watch] Start watching cagent
PM2 | 2020-09-20T12:25:32: PM2 log: App [cagent:3] starting in -cluster mode-
PM2 | 2020-09-20T12:25:33: PM2 log: App [cagent:3] online
PM2 | 2020-09-21T18:56:22: PM2 log: App name:cagent id:2 disconnected
PM2 | 2020-09-21T18:56:22: PM2 log: App [cagent:2] exited with code [0] via signal [SIGSEGV]
PM2 | 2020-09-21T18:56:22: PM2 log: App [cagent:2] starting in -cluster mode-
PM2 | 2020-09-21T18:56:22: PM2 log: App [cagent:2] online

Start with the backtrace locations in @pm2/io/build/main/utils/metrics/histogram.js, eventLoopMetrics.js, and services/metrics.js, alongside the reported Node.js 10.22.0 and PM2 4.4.1 versions. Establish a reproducible case for the cluster-mode SIGSEGV, then verify that the relevant metrics path no longer crashes under the reported setup.