packagekitd crashed with SIGSEGV in strlen()

[Mirzet Kadic]

packagekitd crashed with SIGSEGV in strlen()

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: packagekit 0.8.17-4ubuntu6~gcc5.4ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
Date: Sat Mar 26 12:05:03 2016
ExecutablePath: /usr/lib/packagekit/packagekitd
InstallationDate: Installed on 2016-03-25 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
ProcCmdline: /usr/lib/packagekit/packagekitd
SegvAnalysis:
 Segfault happened at: 0x7f642c2abed6 <strlen+38>: movdqu (%rax),%xmm4
 PC (0x7f642c2abed6) ok
 source "(%rax)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%xmm4" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: packagekit
StacktraceTop:
 strlen () at ../sysdeps/x86_64/strlen.S:106
 __add_to_environ (name=0x7f641a6fe9ef "http_proxy", value=0x0, combined=0x0, replace=1) at setenv.c:131
 AptIntf::init() () from /usr/lib/x86_64-linux-gnu/packagekit-backend/libpk_backend_aptcc.so
 ?? () from /usr/lib/x86_64-linux-gnu/packagekit-backend/libpk_backend_aptcc.so
 ?? ()
Title: packagekitd crashed with SIGSEGV in strlen()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 strlen () at ../sysdeps/x86_64/strlen.S:106
 __add_to_environ (name=0x7f641a6fe9ef "http_proxy", value=0x0, combined=0x0, replace=1) at setenv.c:131
 AptIntf::init() () from /tmp/apport_sandbox_wBmXQx/usr/lib/x86_64-linux-gnu/packagekit-backend/libpk_backend_aptcc.so
 pk_backend_resolve_thread(PkBackendJob*, _GVariant*, void*) () from /tmp/apport_sandbox_wBmXQx/usr/lib/x86_64-linux-gnu/packagekit-backend/libpk_backend_aptcc.so
 pk_backend_job_thread_setup ()

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[David Hoeffer (d-hoeffer)]

This happens when http_proxy is not set. To reproduce, run
root# unset http_proxy
root# pkcon get-updates
Getting updates [=========================]
Starting [ == ] The daemon crashed mid-transaction!

It's fixed upstrem: https://github.com/hughsie/PackageKit/commit/e94b80f90179db18221b2eff93b4561b5418fbfb#diff-0f4bea38f9a8f781e01b5dce9e95812c

so presumably it's only a question of pulling a newer upstream version.