[Bug 911436] Re: https crashed with SIGSEGV in lookup_or_create_bucket()

[Steve Langasek]

** Changed in: p11-kit (Ubuntu)
     Assignee: Canonical Foundations Team (canonical-foundations) => Adam Conrad (adconrad)

** Changed in: p11-kit (Ubuntu)
    Milestone: ubuntu-12.04-beta-1 => ubuntu-12.04-beta-2

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Title:
  https crashed with SIGSEGV in lookup_or_create_bucket()

Status in “apt” package in Ubuntu:
  Invalid
Status in “p11-kit” package in Ubuntu:
  Triaged

Bug description:
  This happened after a slightly broken upgrade, but it can be
  reproduced with

  $ sudo cp /etc/pkcs11/modules/gnome-keyring-module /etc/pkcs11/modules/gnome-keyring-module.dpkg-new
  $ sudo apt-get update
  p11-kit: duplicate configured module: gnome-keyring-module: /usr/lib/x86_64-linux-gnu/pkcs11/gnome-keyring-pkcs11.so
  E: Method https has died unexpectedly!
  E: Sub-process https received a segmentation fault.

  There are two bugs here, I suppose.  One is that pkcs11 should ignore
  *.dpkg-new files (usually this would be done by reading, e.g.,
  /etc/pkcs11/modules/*.conf instead of /etc/pkcs11/modules/*), and the
  other is that a duplicate file shouldn’t cause a crash.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: apt-transport-https 0.8.16~exp5ubuntu14.1
  ProcVersionSignature: Ubuntu 3.2.0-7.13-generic 3.2.0-rc7
  Uname: Linux 3.2.0-7-generic x86_64
  NonfreeKernelModules: openafs
  ApportVersion: 1.90-0ubuntu1
  Architecture: amd64
  Date: Tue Jan  3 15:17:28 2012
  ExecutablePath: /usr/lib/apt/methods/https
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101202)
  ProcCmdline: /usr/lib/apt/methods/https
  SegvAnalysis:
   Segfault happened at: 0x1dd4460:	add    %al,(%rax)
   PC (0x01dd4460) in non-executable VMA region: 0x01db9000-0x01dda000 rw-p [heap]
   source "%al" ok
   destination "(%rax)" (0x000078b1) not located in a known VMA region (needed writable region)!
  SegvReason:
   executing writable VMA [heap]
   writing NULL VMA
  Signal: 11
  SourcePackage: apt
  StacktraceTop:
   ?? ()
   ?? () from /usr/lib/x86_64-linux-gnu/libp11-kit.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libp11-kit.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libp11-kit.so.0
   p11_kit_initialize_registered () from /usr/lib/x86_64-linux-gnu/libp11-kit.so.0
  Title: https crashed with SIGSEGV in p11_kit_initialize_registered()
  UpgradeStatus: Upgraded to precise on 2011-11-16 (48 days ago)
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