Version 2.33.0/node v22.21.0 - Error: write EFAULT

Mr.Sponti

So, after further investigations I found the issue in the module: ./MagicMirror/node_modules/systeminformation/lib/system.js:175:28

I’m not a nodejs expert, but it seems that execSync returns a invalid or corrupted raw buffer. The encoding option solved the issue, as in my case execSync returns now an empty string.

const stdout = execSync('dmesg 2>/dev/null | grep -iE "virtual|hypervisor" | grep -iE "vmware|qemu|kvm|xen" | grep -viE "Nested Virtualization|/virtual/"', {encoding: 'utf-8'});

sdetweil

@Mr.Sponti if you take the contents of the execSync() and run it at the command line does it work?

Mr.Sponti

Yes, without any error, but also without any output!

sdetweil

@Mr.Sponti how about the 1st command

dmesg

In the line in the execSync it throws away any errors

Mr.Sponti

Sam, the kernel buffer does not include a line with ‘virtual’ or ‘hypervisor’. So, the retuen value of the execSync is a emty string.

pi@devpi:~ $ dmesg | grep virtual
pi@devpi:~ $ dmesg | grep hypervisor
pi@devpi:~ $ dmesg | grep zram0
[    4.928549] zram_generator::config[229]: zram0: system has too much memory (905MB), limit is 0MB, ignoring.
[    5.775275] systemd[1]: Expecting device dev-zram0.device - /dev/zram0...
[    5.977908] zram: Added device: zram0
[    6.771158] zram0: detected capacity change from 0 to 1853440
[    6.998349] Adding 926716k swap on /dev/zram0.  Priority:100 extents:1 across:926716k SS

sdetweil

@Mr.Sponti yep errors, too much ram. Etc

What is this running in?