TLSSocket.prependOnceListener('keylog') results in a segmentation fault

[zyscoder]

• Version: v14.15.1
• Platform: Linux 5.8.0-38-generic The binary and long term compatibility with node #43~20.04.1-Ubuntu SMP Tue Jan 12 16:39:47 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
• Subsystem: TLSSocket.prependOnceListener

What steps will reproduce the bug?

Setup a node instance,

» node

and run the following javascript code.

tlsSocket = tls.connect('r','\u{85}');
tlsSocket.prependOnceListener('keylog',(line)=>{});

Then a segmentation fault occurs.

How often does it reproduce? Is there a required condition?

This problem can always be triggered following the steps above.

What is the expected behavior?

If any error occurs, an exception or other similar error-reporting stuff should be thrown. There is no reason to abort the whole node process.

What do you see instead?

» node
Welcome to Node.js v14.15.1.
Type ".help" for more information.
> tlsSocket = tls.connect('r','\u{85}');
<ref *1> TLSSocket {
...
}
> tlsSocket.prependOnceListener('keylog',(line)=>{});Uncaught:
<ref *1> Error: connect ENOENT r
...
}
> tlsSocket.prependOnceListener('keylog',(line)=>{});
[1]    210623 segmentation fault (core dumped)  node

Additional information

[aduh95]

Can reproduce on master and v14.x, but only in REPL: cannot reproduce with eval (node -e, node -p, echo | node) or when inside a file.

[addaleax]

Not related to the REPL.

const tls = require('tls');
tlsSocket = tls.connect('r','\u{85}');
tlsSocket.on('error', () => {})
setTimeout(() => {
tlsSocket.prependOnceListener('keylog',(line)=>{});
}, 1000)