#0  0x00007f513065954f in __fprintf_chk () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f513222677d in pkgDPkgPM::CloseLog() ()
   from /usr/lib/libapt-pkg-libc6.10-6.so.4.8
No symbol table info available.
#2  0x00007f513222c7f8 in pkgDPkgPM::Go(int) ()
   from /usr/lib/libapt-pkg-libc6.10-6.so.4.8
No symbol table info available.
#3  0x00007f51321df625 in pkgPackageManager::DoInstallPostFork(int) ()
   from /usr/lib/libapt-pkg-libc6.10-6.so.4.8
No symbol table info available.
#4  0x000000000054112a in ?? ()
No symbol table info available.
#5  0x0000000000541617 in ?? ()
No symbol table info available.
#6  0x0000000000505c57 in ?? ()
No symbol table info available.
#7  0x00000000004db896 in ?? ()
No symbol table info available.
#8  0x000000000041bd29 in ?? ()
No symbol table info available.
#9  0x00007f513057dc4d in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#10 0x0000000000419589 in ?? ()
No symbol table info available.
#11 0x00007fffa4d51918 in ?? ()
No symbol table info available.
#12 0x000000000000001c in ?? ()
No symbol table info available.
#13 0x0000000000000003 in ?? ()
No symbol table info available.
#14 0x00007fffa4d539b5 in ?? ()
No symbol table info available.
#15 0x00007fffa4d539be in ?? ()
No symbol table info available.
#16 0x00007fffa4d539c6 in ?? ()
No symbol table info available.
#17 0x0000000000000000 in ?? ()
No symbol table info available.