Daemon SIGSEGV panic if `systemctl stop` when UI paused v1.5.2

[nettybun]

Please, check the FAQ and Known Problems pages before creating the bug report: https://github.com/evilsocket/opensnitch/wiki/FAQs https://github.com/evilsocket/opensnitch/wiki/Known-problems

Describe the bug A clear and concise description of what the bug is.

Include the following information:

• OpenSnitch version. v1.5.2 installed via GitHub release opensnitch_1.5.2-1_amd64.deb
• OS: Ubuntu
• Version 22.04.1 LTS
• Window Manager: N/A
• Kernel version: 5.19.0-32-generic crash.log 22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Mon Jan 30 17:03:34 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

To Reproduce Describe in detail as much as you can what happened.

Steps to reproduce the behavior:

1. Install deb
2. systemctl enable --now opensnitch
3. Pause opensnitch in the UI (i.e State: Disabled)
4. systemctl stop opensnitch
5. See error

Post error logs: Very long see file:

$ systemctl status opensnitch
Apr 21 17:25:49 twothirty systemd[1]: Starting OpenSnitch is a GNU/Linux application firewall....
Apr 21 17:25:49 twothirty systemd[1]: Started OpenSnitch is a GNU/Linux application firewall..
Apr 21 17:25:49 twothirty opensnitchd[186836]: [2023-04-22 00:25:49]  IMP  Starting opensnitch-daemon v1.5.2
Apr 21 17:25:49 twothirty opensnitchd[186836]: [2023-04-22 00:25:49]  INF  Loading rules from /etc/opensnitchd/rules ...
Apr 23 17:05:15 twothirty systemd[1]: Stopping OpenSnitch is a GNU/Linux application firewall....
Apr 23 17:05:20 twothirty opensnitchd[186836]: fatal error: unexpected signal during runtime execution
Apr 23 17:05:20 twothirty opensnitchd[186836]: [signal SIGSEGV: segmentation violation code=0x1 addr=0x7fc4ac379370 pc=0x7fc3aa3a679a]
Apr 23 17:05:20 twothirty opensnitchd[186836]: runtime stack:
Apr 23 17:05:20 twothirty opensnitchd[186836]: runtime.throw(0xad5571, 0x2a)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         runtime/panic.go:1116 +0x72
Apr 23 17:05:20 twothirty opensnitchd[186836]: runtime.sigpanic()
Apr 23 17:05:20 twothirty opensnitchd[186836]:         runtime/signal_unix.go:726 +0x4ac
Apr 23 17:05:20 twothirty opensnitchd[186836]: goroutine 6505 [syscall]:
Apr 23 17:05:20 twothirty opensnitchd[186836]: runtime.cgocall(0x956930, 0xc001bb2f10, 0xc001bb2f00)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         runtime/cgocall.go:133 +0x5b fp=0xc001bb2ee0 sp=0xc001bb2ea8 pc=0x4080bb
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter._Cfunc_nfq_close(0x7fc378000fd0, 0xc000000000)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         _cgo_gotypes.go:262 +0x49 fp=0xc001bb2f10 sp=0xc001bb2ee0 pc=0x5ff2a9
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter.(*Queue).closeNfq.func1(0xc000e44210, 0xc001a58000)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/netfilter/queue.go:175 +0x59 fp=0xc001bb2f48 sp=0xc001bb2f10 pc=0x601579
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter.(*Queue).closeNfq(0xc000e44210)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/netfilter/queue.go:175 +0x3f fp=0xc001bb2f98 sp=0xc001bb2f48 pc=0x60053f
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter.(*Queue).destroy.func1()
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/netfilter/queue.go:158 +0x98 fp=0xc001bb2fe0 sp=0xc001bb2f98 pc=0x601378
Apr 23 17:05:20 twothirty opensnitchd[186836]: runtime.goexit()
Apr 23 17:05:20 twothirty opensnitchd[186836]:         runtime/asm_amd64.s:1374 +0x1 fp=0xc001bb2fe8 sp=0xc001bb2fe0 pc=0x4719c1
Apr 23 17:05:20 twothirty opensnitchd[186836]: created by time.goFunc
Apr 23 17:05:20 twothirty opensnitchd[186836]:         time/sleep.go:167 +0x45
Apr 23 17:05:20 twothirty opensnitchd[186836]: goroutine 1 [syscall]:
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter._Cfunc_nfq_unbind_pf(0x7fc378002c30, 0xc0026b000a, 0x0)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         _cgo_gotypes.go:355 +0x4d
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter.(*Queue).destroy.func3(0xc000e44240, 0xc000000000)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/netfilter/queue.go:163 +0x65
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter.(*Queue).destroy(0xc000e44240)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/netfilter/queue.go:163 +0x8a
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/netfilter.(*Queue).Close(0xc000e44240)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/netfilter/queue.go:146 +0x46
Apr 23 17:05:20 twothirty opensnitchd[186836]: main.doCleanup(0xc000e44210, 0xc000e44240)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/main.go:163 +0xc5
Apr 23 17:05:20 twothirty opensnitchd[186836]: main.main()
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/main.go:413 +0x745
Apr 23 17:05:20 twothirty opensnitchd[186836]: goroutine 6 [syscall]:
Apr 23 17:05:20 twothirty opensnitchd[186836]: os/signal.signal_recv(0xb6a140)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         runtime/sigqueue.go:147 +0x9d
Apr 23 17:05:20 twothirty opensnitchd[186836]: os/signal.loop()
Apr 23 17:05:20 twothirty opensnitchd[186836]:         os/signal/signal_unix.go:23 +0x25
Apr 23 17:05:20 twothirty opensnitchd[186836]: created by os/signal.Notify.func1.1
Apr 23 17:05:20 twothirty opensnitchd[186836]:         os/signal/signal.go:150 +0x45
Apr 23 17:05:20 twothirty opensnitchd[186836]: goroutine 23 [syscall, 13 minutes]:
Apr 23 17:05:20 twothirty opensnitchd[186836]: syscall.Syscall6(0xe8, 0x7, 0xc001297b6c, 0x7, 0xffffffffffffffff, 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x4)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         syscall/asm_linux_amd64.s:41 +0x5
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/vendor/golang.org/x/sys/unix.EpollWait(0x7, 0xc001297b6c, 0x7, 0x7, 0xfffffffffff>
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/vendor/golang.org/x/sys/unix/zsyscall_linux_amd64.go:76 +0x72
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/vendor/github.com/fsnotify/fsnotify.(*fdPoller).wait(0xc000e3a040, 0xc001297c00, >
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/vendor/github.com/fsnotify/fsnotify/inotify_poller.go:86 +0x91
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/vendor/github.com/fsnotify/fsnotify.(*Watcher).readEvents(0xc00007a050)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/vendor/github.com/fsnotify/fsnotify/inotify.go:192 +0x206
Apr 23 17:05:20 twothirty opensnitchd[186836]: created by github.com/evilsocket/opensnitch/daemon/vendor/github.com/fsnotify/fsnotify.NewWatcher
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/vendor/github.com/fsnotify/fsnotify/inotify.go:59 +0x1a8
Apr 23 17:05:20 twothirty opensnitchd[186836]: goroutine 24 [select, 125 minutes]:
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/rule.(*Loader).liveReloadWorker(0xc0004d2060)
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/rule/loader.go:201 +0x1c5
Apr 23 17:05:20 twothirty opensnitchd[186836]: created by github.com/evilsocket/opensnitch/daemon/rule.(*Loader).Load
Apr 23 17:05:20 twothirty opensnitchd[186836]:         github.com/evilsocket/opensnitch/daemon/rule/loader.go:91 +0x2a7
Apr 23 17:05:20 twothirty opensnitchd[186836]: goroutine 25 [chan receive, 1 minutes]:
Apr 23 17:05:20 twothirty opensnitchd[186836]: github.com/evilsocket/opensnitch/daemon/statistics.(*Statistics).eventWorker(0xc000e3c270, 0x0)
...
... Very long see attached file.
...
Apr 23 17:05:20 twothirty systemd[1]: opensnitch.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Apr 23 17:05:20 twothirty systemd[1]: opensnitch.service: Failed with result 'exit-code'.

Expected behavior (optional) No stacktrace

I know this isn't a huge deal since the program is shutting down anyway but it's still bad to spam the journal this loudly with a stacktrace - I'm assuming there's just a try/catch needed somewhere but I'm not a Go dev.

Screenshots If applicable, add screenshots to help explain your problem. It may help to understand the issue much better.

Additional context Add any other context about the problem here.