** Description changed:
+ [Impact]
+
+ * indicator-session-service crashes, so session menu clicks won't be
+ processed.
+
+ * The crash is being caused by a race condition where the upower proxy is
used
+ before it's been created. The fix is to wrap the upower proxy use inside a
+ "if (upower_proxy != NULL) {...}" block. Only the code directly querying
+ the upower proxy is moved into the block.
+
+ [Test Case]
+
+ * There's no straightforward way to replicate the race condition needed
+ to trigger this crash. indicator-session-service asynchronously creates
+ a upower proxy on the system bus. The crash occurs iff the menuitems need
+ to get refreshed before the bus returns the upower proxy.
+
+ [Regression Potential]
+
+ * IMO the regression risk is low because of the narrow scope of the
+ change.
+
+ [Other info]
+
+ * This bug was introduced in indicator-session 12.10.4, released on Oct 3.
+ P and earlier releases of Q aren't affected.
+
+ ----
+
no status bar
ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: indicator-session 12.10.4-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-16.25-generic 3.5.4
Uname: Linux 3.5.0-16-generic x86_64
ApportVersion: 2.6.1-0ubuntu1
Architecture: amd64
Date: Thu Oct 4 21:41:56 2012
ExecutablePath: /usr/lib/indicator-session/indicator-session-service
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
ProcCmdline: /usr/lib/indicator-session/indicator-session-service
SegvAnalysis:
- Segfault happened at: 0x417249: mov (%rbx),%rdi
- PC (0x00417249) ok
- source "(%rbx)" (0x00000000) not located in a known VMA region (needed
readable region)!
- destination "%rdi" ok
+ Segfault happened at: 0x417249: mov (%rbx),%rdi
+ PC (0x00417249) ok
+ source "(%rbx)" (0x00000000) not located in a known VMA region (needed
readable region)!
+ destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: indicator-session
StacktraceTop:
- ?? ()
- ?? ()
- ?? ()
- ?? ()
- __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
+ ?? ()
+ ?? ()
+ ?? ()
+ ?? ()
+ __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
Title: indicator-session-service crashed with SIGSEGV in __libc_start_main()
UpgradeStatus: Upgraded to quantal on 2012-10-02 (1 days ago)
UserGroups:
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1061844
Title:
indicator-session-service crashed with SIGSEGV in
dbus_upower_get_can_suspend()
To manage notifications about this bug go to:
https://bugs.launchpad.net/indicator-session/+bug/1061844/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
