[Aptitude-devel] Bug#794830: aptitude: segfaults in memory allocation

[Matthijs van Duin]

Package: aptitude
Version: 0.7-1
Severity: important

Dear Maintainer,

Since upgrade to 0.7, aptitude's TUI has become unusable for me due to
consistent crashes, in particular occuring:

1. if I set the package tree limit, in either view
2. if I perform a search
2. if I open the menu bar (^T) and repeatedly change between menus.
Repeatedly opening and closing the menu bar also works.

In case of the search, it is interesting to note that it still seems to
correctly perform the live-search while typing the query, but crashes
upon OKing the dialog, but not when pressing Cancel. OKing a failed
search only crashes after performing doing repeatedly.

The CLI operation appears unaffected so far.

Most crashes are segfaults at:
#0  0x00007ffff5a63b15 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff5a64ef8 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007ffff5a67080 in malloc () from /lib/x86_64-linux-gnu/libc.so.6
#3  cwidget::util::transcode_buffer (...) at transcode.cc:99
#4  cwidget::util::transcode (...) at transcode.cc:249
#5  transcode (...) at transcode.h:48
#6  cwidget::util::transcode (...) at transcode.cc:270
(rest of traceback varies)

However setting the limit in hierarchical view segfaults at:
#0  0x00007ffff5a64538 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  deallocate (...) at /usr/include/c++/5/ext/new_allocator.h:110
#2  deallocate (...) at /usr/include/c++/5/bits/alloc_traits.h:386
#3  _M_destroy (...) at /usr/include/c++/5/bits/basic_string.h:185
#4  _M_dispose (...) at /usr/include/c++/5/bits/basic_string.h:180
#5  ~basic_string (...) at /usr/include/c++/5/bits/basic_string.h:544
#6  ~pkg_subtree_with_order (...) at ../../src/pkg_grouppolicy.cc:62

occasionally instead of a segv I get an abort preceded by the message:
	munmap_chunk(): invalid pointer

Let me know if you want full tracebacks or other data.

-- Package-specific info:
Terminal: xterm-new
$DISPLAY is set.
which aptitude: /usr/bin/aptitude

aptitude version information:
aptitude 0.7 compiled at Aug  5 2015 18:53:06
Compiler: g++ 5.2.1 20150730
Compiled against:
  apt version 4.16.0
  NCurses version 5.9
  libsigc++ version: 2.4.1
  Gtk+ support disabled.
  Qt support disabled.

Current library versions:
  NCurses version: ncurses 5.9.20150516
  cwidget version: 0.5.17
  Apt version: 4.16.0

aptitude linkage:
	linux-vdso.so.1 (0x00007ffd7dbe2000)
	libapt-pkg.so.4.16 => /usr/lib/x86_64-linux-gnu/libapt-pkg.so.4.16 (0x00007f045432b000)
	libncursesw.so.5 => /lib/x86_64-linux-gnu/libncursesw.so.5 (0x00007f04540f5000)
	libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f0453eca000)
	libsigc-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libsigc-2.0.so.0 (0x00007f0453cc4000)
	libcwidget.so.3 => /usr/lib/x86_64-linux-gnu/libcwidget.so.3 (0x00007f04539c5000)
	libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f04536f7000)
	libboost_iostreams.so.1.58.0 => /usr/lib/x86_64-linux-gnu/libboost_iostreams.so.1.58.0 (0x00007f04534de000)
	libxapian.so.22 => /usr/lib/libxapian.so.22 (0x00007f04530dc000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f0452ebe000)
	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f0452b43000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f0452842000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f045262b000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f0452282000)
	libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f045207f000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f0451e7a000)
	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f0451c5f000)
	libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f0451a4f000)
	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f045182b000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f0451623000)
	libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f045141d000)
	/lib64/ld-linux-x86-64.so.2 (0x000055da5879d000)

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (100, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.1-3.dmz.1-liquorix-amd64 (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=en_NL.UTF-8, LC_CTYPE=en_NL.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages aptitude depends on:
ii  aptitude-common           0.7-1
ii  libapt-pkg4.16            1.0.10.1
ii  libboost-iostreams1.58.0  1.58.0+dfsg-3
ii  libc6                     2.19-19
ii  libcwidget3v5             0.5.17-3.1
ii  libgcc1                   1:5.2.1-14
ii  libncursesw5              5.9+20150516-2
ii  libsigc++-2.0-0c2a        2.4.1-1
ii  libsqlite3-0              3.8.11.1-1
ii  libstdc++6                5.2.1-14
ii  libtinfo5                 5.9+20150516-2
ii  libxapian22v5             1.2.21-1.2

Versions of packages aptitude recommends:
ii  aptitude-doc-en [aptitude-doc]  0.7-1
ii  libparse-debianchangelog-perl   1.2.0-5
ii  sensible-utils                  0.0.9

Versions of packages aptitude suggests:
pn  apt-xapian-index  <none>
pn  debtags           <none>
pn  tasksel           <none>

-- no debconf information