[Bug 1754265] Re: packagekitd crashed with SIGSEGV in utilBuildPackageId()

[Julian Andres Klode]

So, the problem is that PackageKit casts the item owner to
pkgAcqArchiveSane, but I'm using the mirror method and this now fetches
the mirror list every run, and that's probably not a pkgAcqArchive.

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Title:
  packagekitd crashed with SIGSEGV in utilBuildPackageId()

Status in packagekit package in Ubuntu:
  Triaged

Bug description:
  PackageKit seems to be crashing randomly on bionic, not sure why, did
  not investigate further yet.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: packagekit 1.1.7-1
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  Date: Thu Mar  8 08:35:34 2018
  ExecutablePath: /usr/lib/packagekit/packagekitd
  InstallationDate: Installed on 2017-12-08 (89 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  ProcCmdline: /usr/lib/packagekit/packagekitd
  SegvAnalysis:
   Segfault happened at: 0x7fca622a9ecc <_Z18utilBuildPackageIdRKN8pkgCache11VerIteratorE+124>:	cmpb   $0x6,0x22(%rax)
   PC (0x7fca622a9ecc) ok
   source "$0x6" ok
   destination "0x22(%rax)" (0x0015f6da) not located in a known VMA region (needed writable region)!
   Stack memory exhausted (SP below stack segment)
  SegvReason: writing unknown VMA
  Signal: 11
  SourcePackage: packagekit
  StacktraceTop:
   utilBuildPackageId(pkgCache::VerIterator const&) () at /usr/lib/x86_64-linux-gnu/packagekit-backend/libpk_backend_aptcc.so
   AptIntf::emitPackage(pkgCache::VerIterator const&, PkInfoEnum) () at /usr/lib/x86_64-linux-gnu/packagekit-backend/libpk_backend_aptcc.so
   AcqPackageKitStatus::updateStatus(pkgAcquire::ItemDesc&, int) () at /usr/lib/x86_64-linux-gnu/packagekit-backend/libpk_backend_aptcc.so
   pkgAcquire::Worker::RunMessages() () at /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
   pkgAcquire::Worker::InFdReady() () at /usr/lib/x86_64-linux-gnu/libapt-pkg.so.5.0
  Title: packagekitd crashed with SIGSEGV in utilBuildPackageId()
  UpgradeStatus: Upgraded to bionic on 2017-12-08 (89 days ago)
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