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updated after opensnitch repo commit a3cca7fdd9

wiki auto updater 2021-08-20 20:07:55 +00:00
parent c538792876
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19
Known-problems.md

@ -4,6 +4,8 @@
[cannot write ... kprobe_events: file exists](#kprobe_events-file-exists)
[error while loading "kprobe/(...)": invalid argument](#error-while-loading-kprobes-invalid-argument)
**General**
[KDE/Gnome/Xfce/... does not boot up](#desktop-environment-does-not-bootup)
@ -70,6 +72,23 @@ $ sudo su
# > /sys/kernel/debug/tracing/kprobe_events
```
### Error while loading kprobes: invalid argument
> eBPF Failed to load /etc/opensnitchd/opensnitch.o: error while loading "kprobe/tcp_v4_connect" (invalid argument):
This error may indicate that your kernel doesn't have [ftrace](https://www.kernel.org/doc/html/latest/trace/ftrace.html) support, which is needed for eBPF to work.
CONFIG_FTRACE should be **y** and the directory `/sys/kernel/debug/tracing/` must exist.
```
$ grep CONFIG_FTRACE /boot/config-$(uname-r)
CONFIG_FTRACE=y
```
If the output is `# CONFIG_FTRACE is not set`, your kernel is not compiled with ftrace support.
Read more: #475
### Desktop Environment does not boot up
If after installing OpenSnitch, or after changing the Default Action to `deny`, the Desktop Environment does not show up (after restart), try: