[Bug 878689] Re: Acquire isn't thread safe

[Sebastian Heinlein]

#0  0x00007ffff69b33a5 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff69b6b0b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007ffff217cd7d in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#3  0x00007ffff217af26 in ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ffff217af53 in std::terminate() () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x00007ffff217b04e in __cxa_throw () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#6  0x00007ffff217b52d in operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007ffff2164059 in std::string::_Rep::_S_create(unsigned long, unsigned long, std::allocator<char> const&) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#8  0x00007ffff2164dcb in std::string::_Rep::_M_clone(std::allocator<char> const&, unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#9  0x00007ffff216552c in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) ()
   from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#10 0x00007ffff2455c5d in pkgAcqArchive::Done(std::string, unsigned long long, std::string, pkgAcquire::MethodConfig*) ()
   from /usr/lib/libapt-pkg.so.4.11
#11 0x00007ffff243f099 in pkgAcquire::Worker::RunMessages() () from /usr/lib/libapt-pkg.so.4.11
#12 0x00007ffff2440a07 in pkgAcquire::Worker::InFdReady() () from /usr/lib/libapt-pkg.so.4.11
#13 0x00007ffff243805b in pkgAcquire::RunFds(fd_set*, fd_set*) () from /usr/lib/libapt-pkg.so.4.11
#14 0x00007ffff2439e30 in pkgAcquire::Run(int) () from /usr/lib/libapt-pkg.so.4.11
#15 0x00007ffff26fd1ce in ?? () from /usr/lib/python2.7/dist-packages/apt_pkg.so
#16 0x00000000004b6569 in PyEval_EvalFrameEx ()
#17 0x00000000004b6d77 in PyEval_EvalFrameEx ()
#18 0x00000000004bcd2d in PyEval_EvalCodeEx ()
#19 0x0000000000448edf in ?? ()
#20 0x000000000041ad2a in PyObject_Call ()
#21 0x00000000004b84b6 in PyEval_EvalFrameEx ()
#22 0x00000000004bcd2d in PyEval_EvalCodeEx ()
#23 0x00000000004b6a5b in PyEval_EvalFrameEx ()
#24 0x00000000004bcd2d in PyEval_EvalCodeEx ()
#25 0x0000000000449098 in ?? ()
#26 0x000000000041ad2a in PyObject_Call ()
#27 0x00000000004b84b6 in PyEval_EvalFrameEx ()
#28 0x00000000004b6d77 in PyEval_EvalFrameEx ()

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https://bugs.launchpad.net/bugs/878689

Title:
  Acquire isn't thread safe

Status in “apt” package in Ubuntu:
  New

Bug description:
  We would like to move downloading in aptdaemon to a separate thread
  but it seems that apt isn't very thread safe. Also main thread doesn't
  do any changes we see a lot of string operation crashes in
  pkgAcqArchive::Done(std::string, unsigned long long, std::string,
  pkgAcquire::MethodConfig*) ()

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