Public bug reported:
打开设置，在网络设置添加WireGuard,点击fwmark设置项的加号控件后，再次点击减号控件就会触发bug,以下为猜测的bug机理：
fwmark 这个字段在 GNOME 的 WireGuard 编辑器里是无符号整数，加减控件的最小值处理可能有问题。加号能到 1，减号把值往 0 以下推时触发
SIGSEGV，落在 libgtk-4 里写入未映射地址（error 6）。
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gnome-control-center 1:46.7-0ubuntu0.24.04.6
ProcVersionSignature: Ubuntu 7.0.0-42.42~24.04.1-generic 7.0.14
Uname: Linux 7.0.0-42-generic x86_64
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 5 06:37:52 2026
InstallationDate: Installed on 2026-11-03 (2 days ago)
InstallationMedia: Ubuntu 24.04.4 LTS "Noble Numbat" - Release amd64 (20260210)
ProcEnviron:
LANG=zh_CN.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-control-center (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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You received this bug notification because you are a member of Ubuntu
Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/2173025
Title:
添加 VPN → WireGuard → fwmark 点 + 到 1 → 点 − 遵循此流程可复现设置崩溃bug
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