Possible off-by-one here, there are only NUM_BONUS_DOTS (4) bonus points, so index 4 is bad: http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/saucy/xscreensaver/saucy/view/head:/hacks/pacman_level.c#L542 (and on line 556)
The array of bonus_dot bonus_dots[NUM_BONUS_DOTS] is defined on http://bazaar.launchpad.net/~ubuntu- branches/ubuntu/saucy/xscreensaver/saucy/view/head:/hacks/pacman.h#L221 Suggestion for patch: replace <= with < on lines 542 and 556. BTW, I wonder if the stack is messed up. The stacktrace says: #0 is_bonus_dot (pp=pp@entry=0x1d24780, x=20, y=19, idx=idx@entry=0x7fff5eb693ec) at pacman_level.c:544 ret = 0 i = 146321 But the loop variable "i" only goes from 0 to 4. (And should probably only go to 3.) ** Tags added: bitesize ** Changed in: xscreensaver (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xscreensaver in Ubuntu. https://bugs.launchpad.net/bugs/1196251 Title: pacman crashed with SIGSEGV in is_bonus_dot() Status in “xscreensaver” package in Ubuntu: Confirmed Bug description: I was just selecting which xscreensavers to allow and had not gotten to pacman yet when this occurred. ProblemType: Crash DistroRelease: Ubuntu 13.10 Package: xscreensaver-data-extra 5.15-2ubuntu2 ProcVersionSignature: Ubuntu 3.10.0-1.8-generic 3.10.0-rc7 Uname: Linux 3.10.0-1-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.10.2-0ubuntu3 Architecture: amd64 Date: Sun Jun 30 09:56:05 2013 ExecutablePath: /usr/lib/xscreensaver/pacman InstallationDate: Installed on 2013-06-29 (0 days ago) InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha amd64 (20130626) MarkForUpload: True ProcCmdline: pacman -root -window-id 0x1803DB5 ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SegvAnalysis: Segfault happened at: 0x4084bf: cmp 0xdb8(%rdi),%esi PC (0x004084bf) ok source "0xdb8(%rdi)" (0x01ed2004) not located in a known VMA region (needed readable region)! destination "%esi" ok SegvReason: reading unknown VMA Signal: 11 SourcePackage: xscreensaver StacktraceTop: ?? () ?? () ?? () ?? () __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 Title: pacman crashed with SIGSEGV in __libc_start_main() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xscreensaver/+bug/1196251/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
