[Bug 805154] Re: gdm-simple-slave crashed with SIGSEGV in _nss_compat_getpwnam_r()
Iain Lane
iain at orangesquash.org.uk
Tue Dec 3 11:10:51 UTC 2013
Thanks for the debdiff, I just uploaded it into the queue for precise-
proposed.
** Changed in: gdm (Ubuntu Precise)
Status: Triaged => In Progress
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Title:
gdm-simple-slave crashed with SIGSEGV in _nss_compat_getpwnam_r()
Status in “gdm” package in Ubuntu:
Fix Released
Status in “gdm” source package in Oneiric:
Won't Fix
Status in “gdm” source package in Precise:
In Progress
Bug description:
SRU justification:
[Impact]
* With automatic login enabled in /etc/gdm/custom.conf, gdm crashes
instead of logging in, and doesn't respawn, dropping to a text console
instead.
[Test Case]
* install gdm and choose it as the default display manager at the
debconf prompt
* create /etc/gdm/custom.conf with contents:
[daemon]
AutomaticLoginEnable=true
AutomaticLogin=some-username
(where "some-username" is a user on the system)
* Reboot (or stop the previous display manager and start gdm)
* In gdm in precise-updates, instead of logging in, gdm crashes, the
system drops to a text console, and a gdm-simple-slave segfault is
recorded in dmesg.
[Regression Potential]
* Minimal. The change consists only of adding a missing NULL parameter
check.
Original description:
Chrash happend while trying to change a desktop-icon. Searching the
icon in a hidden folder ".xxxx" in the user directory.
ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: gdm 3.0.4-0ubuntu3
ProcVersionSignature: Ubuntu 3.0-2.3-generic-pae 3.0.0-rc4
Uname: Linux 3.0-2-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Sun Jul 3 01:25:08 2011
ExecutablePath: /usr/lib/gdm/gdm-simple-slave
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110531.1)
ProcCmdline: /usr/lib/gdm/gdm-simple-slave --display-id /org/gnome/DisplayManager/Display2
ProcEnviron:
LANGUAGE=de_AT:de
PATH=(custom, no user)
LANG=de_AT.UTF-8
SegvAnalysis:
Segfault happened at: 0xb77405b7 <_nss_compat_getpwnam_r+55>: movzbl (%edx),%eax
PC (0xb77405b7) ok
source "(%edx)" (0x00000000) not located in a known VMA region (needed readable region)!
destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gdm
StacktraceTop:
_nss_compat_getpwnam_r () from /lib/i386-linux-gnu/libnss_compat.so.2
getpwnam_r () from /lib/i386-linux-gnu/libc.so.6
getpwnam () from /lib/i386-linux-gnu/libc.so.6
?? ()
?? ()
Title: gdm-simple-slave crashed with SIGSEGV in _nss_compat_getpwnam_r()
UpgradeStatus: No upgrade log present (probably fresh install)
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