[Bug 1839714] Re: Segmentation fault when running apt update using libapt-pkg5.90_1.9.2

[shemgp]

Here's the backtrace:
0x00007ffff7dc4310 in pkgAcquire::Enqueue (this=0x7fffffffdf20, Item=...) at ../apt-pkg/acquire.cc:339
warning: Source file is more recent than executable.
339	   if (Config->LocalOnly == true 
(gdb) bt
#0  0x00007ffff7dc4310 in pkgAcquire::Enqueue (this=0x7fffffffdf20, Item=...) at ../apt-pkg/acquire.cc:339
#1  0x00007ffff7d874e4 in pkgAcquire::Item::QueueURI (this=<optimized out>, Item=...) at ../apt-pkg/acquire-item.cc:403
#2  0x00007ffff7d98a1b in pkgAcqMetaIndex::pkgAcqMetaIndex(pkgAcquire*, pkgAcqMetaClearSig*, IndexTarget const&, IndexTarget const&) ()
    at ../apt-pkg/acquire-item.cc:2075
#3  0x00007ffff7d98dde in pkgAcqMetaClearSig::pkgAcqMetaClearSig(pkgAcquire*, IndexTarget const&, IndexTarget const&, IndexTarget const&, metaIndex*) ()
    at ../apt-pkg/acquire-item.cc:1886
#4  0x00007ffff7e2e0d3 in debReleaseIndex::GetIndexes (this=<optimized out>, Owner=0x7fffffffdf20, GetAll=@0x7fffffffdeec: false)
    at /usr/include/c++/9/ext/new_allocator.h:80
#5  0x00007ffff7e9fd19 in pkgSourceList::GetIndexes (this=this at entry=0x55555557bd40, Owner=Owner at entry=0x7fffffffdf20, GetAll=<optimized out>, GetAll at entry=false)
    at ../apt-pkg/sourcelist.cc:487
#6  0x00007ffff7eacced in ListUpdate (Stat=..., List=..., PulseInterval=PulseInterval at entry=0) at ../apt-pkg/update.cc:34
#7  0x00007ffff7f584ca in DoUpdate (CmdL=...) at ../apt-private/private-update.cc:72
#8  0x00007ffff7defa4f in CommandLine::DispatchArg (this=this at entry=0x7fffffffe430, Map=<optimized out>, NoMatch=NoMatch at entry=true)
    at ../apt-pkg/contrib/cmndline.cc:369
#9  0x00007ffff7f1f7b7 in DispatchCommandLine (CmdL=..., Cmds=std::vector of length 31, capacity 32 = {...}) at /usr/include/c++/9/bits/stl_iterator.h:806
#10 0x00005555555563ea in main (argc=2, argv=0x7fffffffe588) at ../cmdline/apt.cc:120

Diffing the 1.9.1 and 1.9.2 acquire shows that pkgAcquire::QueueName was
changed.

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https://bugs.launchpad.net/bugs/1839714

Title:
  Segmentation fault when running apt update using libapt-pkg5.90_1.9.2

Status in apt package in Ubuntu:
  New

Bug description:
  apt update doesn't work after upgrading apt to 1.9.2 with strace:
  openat(AT_FDCWD, "/var/lib/apt/lists/lock", O_RDWR|O_CREAT|O_NOFOLLOW, 0640) = 4
  fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
  fcntl(4, F_SETLK, {l_type=F_WRLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = 0
  --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x5e} ---
  +++ killed by SIGSEGV (core dumped) +++

  downgrading libapt-pkg5.90 to 1.9.1 fixes it.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.10
  Package: libapt-pkg5.90 1.9.2
  ProcVersionSignature: Ubuntu 5.2.0-8.9+test1-generic 5.2.0
  Uname: Linux 5.2.0-8-generic x86_64
  ApportVersion: 2.20.11-0ubuntu7
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Aug 10 21:27:42 2019
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-09-28 (1411 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: apt
  UpgradeStatus: Upgraded to eoan on 2019-07-26 (14 days ago)

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