.
Thread 1 (Thread 7027):
#0  0x00007f358987d14f in __fprintf_chk () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f358a53a4ed in pkgDPkgPM::CloseLog() ()
   from /usr/lib/libapt-pkg-libc6.10-6.so.4.8
No symbol table info available.
#2  0x00007f358a540f70 in pkgDPkgPM::Go(int) ()
   from /usr/lib/libapt-pkg-libc6.10-6.so.4.8
No symbol table info available.
#3  0x00007f358a4f1a85 in pkgPackageManager::DoInstallPostFork(int) ()
   from /usr/lib/libapt-pkg-libc6.10-6.so.4.8
No symbol table info available.
#4  0x0000000000410d37 in ?? ()
No symbol table info available.
#5  0x000000000041454d in ?? ()
No symbol table info available.
#6  0x00007f358a4d4393 in CommandLine::DispatchArg(CommandLine::Dispatch*, bool) () from /usr/lib/libapt-pkg-libc6.10-6.so.4.8
No symbol table info available.
#7  0x000000000040ee27 in ?? ()
No symbol table info available.
#8  0x00007f358979dd8d in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#9  0x0000000000406889 in ?? ()
No symbol table info available.
#10 0x00007fff87e60ac8 in ?? ()
No symbol table info available.
#11 0x000000000000001c in ?? ()
No symbol table info available.
#12 0x0000000000000003 in ?? ()
No symbol table info available.
#13 0x00007fff87e6295d in ?? ()
No symbol table info available.
#14 0x00007fff87e62965 in ?? ()
No symbol table info available.
#15 0x00007fff87e6296d in ?? ()
No symbol table info available.
#16 0x0000000000000000 in ?? ()
No symbol table info available.