> #0 0xb57208f9 in window_menu_get_entries (wm=0x943b668) at window-menu.c:141
> class = 0x0
> window_menu_get_entries (WindowMenu * wm)
> {
> WindowMenuClass * class = WINDOW_MENU_GET_CLASS(wm);
>
> if (class->get_entries != NULL) {
So at a basic level, we could prevent this crash by adding input-
sanitize safeguards (eg, g_return_val_if_fail (IS_WINDOW_MENU(wm))) to
WindowMenu's public-facing functions.
I'd like to know where this bad WindowMenu pointer is coming from
though...
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https://bugs.launchpad.net/bugs/1294545
Title:
unity-panel-service crashed with SIGSEGV in window_menu_get_entries()
Status in “indicator-appmenu” package in Ubuntu:
New
Bug description:
crash occurred immediately after the unlock screen
ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: indicator-appmenu 13.01.0+14.04.20140318-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
Uname: Linux 3.13.0-18-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.13.3-0ubuntu1
Architecture: i386
CurrentDesktop: Unity
Date: Wed Mar 19 12:49:30 2014
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationDate: Installed on 2014-02-04 (42 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140203)
ProcCmdline: /usr/lib/unity/unity-panel-service
SegvAnalysis:
Segfault happened at: 0xb57208f9 <window_menu_get_entries+9>: mov
0x44(%eax),%eax
PC (0xb57208f9) ok
source "0x44(%eax)" (0x00000044) not located in a known VMA region (needed
readable region)!
destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: indicator-appmenu
StacktraceTop:
window_menu_get_entries () from /usr/lib/indicators3/7/libappmenu.so
?? () from /usr/lib/indicators3/7/libappmenu.so
?? () from /usr/lib/i386-linux-gnu/libindicator3.so.7
indicator_object_set_visible () from
/usr/lib/i386-linux-gnu/libindicator3.so.7
?? () from /usr/lib/indicators3/7/libappmenu.so
Title: unity-panel-service crashed with SIGSEGV in window_menu_get_entries()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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