touch-packages team mailing list archive

[David Kalnischkies <1436626@xxxxxxxxxxxxxxxxxx>]

The funpart to observe here is that apt is crashing while writing an
apport report for an observed failure… so figure out what error it is
that apt wants to report here is probably bringing you guys a lot closer
to figure out what goes on… (looking at the stacktrace in the bugreport
alone as I don't have the clearance to look at anything else). Maybe the
new crashreport is partly written before it crashes as multiple
fprintf's are involved in its creation… (I don't see an obvious badboy.
Maybe something about the sourcename lookup. I had to do some bad stuff
to preserve ABI in there lately (to fix md5-only source), maybe
something of that is incorrect. [even through I would presume these
calls would fail, rather than fprintf…]).

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https://bugs.launchpad.net/bugs/1436626

Title:
  aptd crashed with SIGSEGV in _IO_vfprintf_internal()

Status in apt package in Ubuntu:
  Confirmed

Bug description:
  Errors Bucket
  -------------
  https://errors.ubuntu.com/problem/4d8c3bd9e5dfe8ccfe2783d6d12c7c5cb88b8cd9

  sudo apt-get upgrade -y

  ProblemType: CrashDistroRelease: Ubuntu 15.04
  Package: aptdaemon 1.1.1+bzr981-0ubuntu2
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  Date: Thu Mar 26 02:04:25 2015
  ExecutablePath: /usr/sbin/aptd
  InstallationDate: Installed on 2015-02-27 (26 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  InterpreterPath: /usr/bin/python3.4
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/sbin/aptd
  ProcEnviron: LANG=C.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x7fba78fec4b2 <_IO_vfprintf_internal+18578>:	repnz scas %es:(%rdi),%al
   PC (0x7fba78fec4b2) ok
   source "%es:(%rdi)" (0x00000006) not located in a known VMA region (needed readable region)!
   destination "%al" ok
  SegvReason: reading NULL VMA
  Signal: 11SourcePackage: aptdaemon
  StacktraceTop:
   _IO_vfprintf_internal (s=s@entry=0x217fbd0, format=<optimized out>, ap=ap@entry=0x7ffc20027548) at vfprintf.c:1642
   ___fprintf_chk (fp=0x217fbd0, flag=1, format=<optimized out>) at fprintf_chk.c:35
   pkgDPkgPM::WriteApportReport(char const*, char const*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   pkgDPkgPM::ProcessDpkgStatusLine(char*) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
   pkgDPkgPM::DoDpkgStatusFd(int) () from /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.12
  Title: aptd crashed with SIGSEGV in _IO_vfprintf_internal()
  UpgradeStatus: Upgraded to vivid on 2015-03-07 (18 days ago)
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