NodeBB crashes when uploading images

Teresa-Hale-DHQ

Log output:

2021-05-06T01:18:54.643Z [4567/23252] - info: NodeBB Ready
2021-05-06T01:18:54.646Z [4567/23252] - info: Enabling 'trust proxy'
2021-05-06T01:18:54.651Z [4567/23252] - info: NodeBB is now listening on: 0.0.0.0:4567
[cluster] Child Process (23252) has exited (code: null, signal: SIGILL)
[cluster] Spinning up another process...

As you can see, strangely, there isn't even an error.

I'm using the latest version of NodeBB

Teresa-Hale-DHQ

@teresa-hale-dhq Update: I attached a debugger to the Node process; here's the output from that.

(gdb) attach 472
Attaching to process 472
[New LWP 473]
[New LWP 474]
[New LWP 475]
[New LWP 476]
[New LWP 477]
[New LWP 478]
[New LWP 483]
[New LWP 484]
[New LWP 485]
[New LWP 486]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f408e687a47 in epoll_wait (epfd=epfd@entry=14, events=events@entry=0x7fff52341980, maxevents=maxevents@entry=1024,
    timeout=timeout@entry=500) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
30      ../sysdeps/unix/sysv/linux/epoll_wait.c: No such file or directory.
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) n
Program not restarted.
(gdb) c
Continuing.

Thread 1 "node" received signal SIGILL, Illegal instruction.
0x00007f3de6dc1f1f in ?? () from /home/forum/node_modules/sharp/build/Release/../../vendor/8.10.6/lib/libvips-cpp.so.42
(gdb) quit

Idk if this'll be of use, but putting it here in case it is.

PitaJ

What platform are you on? What version of Node? Did you recently upgrade? Maybe try npm rebuild

Teresa-Hale-DHQ

@pitaj I'm on Ubuntu 18.04, using Node.js version 14.16.1.
I tried npm rebuild and restarting NodeBB, but it still crashes whenever I try to upload an image.

PitaJ

Oh actually I think you need to do npm rebuild sharp. Try that and share the output from it.

Teresa-Hale-DHQ

@pitaj

root@rockfic:/home/forum# npm rebuild sharp

> [email protected] install /home/forum/node_modules/sharp
> (node install/libvips && node install/dll-copy && prebuild-install) || (node-gyp rebuild && node install/dll-copy)

sharp: Downloading https://github.com/lovell/sharp-libvips/releases/download/v8.10.6/libvips-8.10.6-linux-x64.tar.br
[email protected] /home/forum/node_modules/sharp

Even still, whenever I try uploading an image, I get this:

[cluster] Child Process (24423) has exited (code: null, signal: SIGILL)
[cluster] Spinning up another process...

PitaJ

Okay so just to confirm this is caused by an error in sharp, try creating a file called test-sharp.js in your nodebb directory with the following contents:

'use strict';

const fs = require('fs/promises');
const sharp = require('sharp');

async function run() {
	const input = await fs.readFile('public/logo.png');
	await sharp(input)
		.resize({ width: 100 })
		.toFile('build/public/logo.png');
}

run().then(() => {}, err => setTimeout(() => { throw err; }, 0));

Then run it like node test-sharp.js. It should create the file build/public/logo.png. Check the exit code with echo $?.