lightdm crashed with SIGSEGV in g_timeout_dispatch()
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
lightdm (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
After logging in the background was shown normally but panel and launcher were missing. Shortly after the crash report showed up. I tried to login in a Ubuntu (Unity) session.
ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: lightdm 0.4.3-0ubuntu1
ProcVersionSign
Uname: Linux 3.0.0-5-generic x86_64
Architecture: amd64
CrashCounter: 1
Date: Wed Jul 13 11:33:39 2011
ExecutablePath: /usr/bin/lightdm
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: lightdm
ProcCwd: /
ProcEnviron: PATH=(custom, no user)
SegvAnalysis:
Segfault happened at: 0x406b70: mov 0x2c(%rax),%r8d
PC (0x00406b70) ok
source "0x2c(%rax)" (0xaaaaaaaaaaaa
destination "%r8d" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: lightdm
StacktraceTop:
?? ()
?? ()
g_timeout_dispatch (source=0x1f43e30, callback=<value optimized out>, user_data=<value optimized out>) at /build/
g_main_dispatch (context=0x1efbd20) at /build/
g_main_
Title: lightdm crashed with SIGSEGV in g_timeout_
UpgradeStatus: Upgraded to oneiric on 2011-06-02 (40 days ago)
UserGroups:
Notice how the greeter is getting killed twice:
[+27.77s] WARNING: Greeter did not quit, sending kill signal
[+27.77s] DEBUG: Sending signal 15 to process 1557
[+28.04s] DEBUG: Process 1557 closed communication channel
[+28.04s] DEBUG: Process 1557 exited with return value 0
[+28.04s] DEBUG: Greeter quit
[+28.77s] WARNING: Greeter did not quit, sending kill signal
[+28.77s] WARNING: invalid unclassed pointer in cast to `Session'
[+28.77s] WARNING: invalid unclassed pointer in cast to `ChildProcess'