. Thread 5 (Thread 0x7fe7e20cb700 (LWP 2163)): #0 0x00007fe7fbfc60bd in read () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #1 0x00007fe7f9af0b93 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007fe7f9b1a626 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007fe7fbfbeedc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #4 0x00007fe7fae5689d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #5 0x0000000000000000 in ?? () No symbol table info available. . Thread 4 (Thread 0x7fe7e6500700 (LWP 2155)): #0 0x00007fe7fae4a773 in poll () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #1 0x00007fe7f9af5078 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #2 0x00007fe7f9af58a2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #3 0x00007fe7f96257b6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 No symbol table info available. #4 0x00007fe7f9b1a626 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #5 0x00007fe7fbfbeedc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #6 0x00007fe7fae5689d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #7 0x0000000000000000 in ?? () No symbol table info available. . Thread 3 (Thread 0x7fe7e7b54700 (LWP 2153)): #0 0x00007fe7fbfc302c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #1 0x00007fe7ec9be0e9 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0 No symbol table info available. #2 0x00007fe7ec9bf899 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0 No symbol table info available. #3 0x00007fe7fbfbeedc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #4 0x00007fe7fae5689d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #5 0x0000000000000000 in ?? () No symbol table info available. . Thread 2 (Thread 0x7fe7e845d700 (LWP 2152)): #0 0x00007fe7fbfc302c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #1 0x00007fe7ed287202 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0 No symbol table info available. #2 0x00007fe7ed287229 in ?? () from /usr/lib/libwebkitgtk-3.0.so.0 No symbol table info available. #3 0x00007fe7fbfbeedc in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 No symbol table info available. #4 0x00007fe7fae5689d in clone () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #5 0x0000000000000000 in ?? () No symbol table info available. . Thread 1 (Thread 0x7fe7fc3d1720 (LWP 2149)): #0 0x00007fe7f0cf133a in pkgCacheGenerator::MergeList(pkgCacheGenerator::ListParser&, pkgCache::VerIterator*) () from /usr/lib/libapt-pkg.so.4.11 No symbol table info available. #1 0x00007fe7f0d4d3ba in debPackagesIndex::Merge(pkgCacheGenerator&, OpProgress*) const () from /usr/lib/libapt-pkg.so.4.11 No symbol table info available. #2 0x00007fe7f0cee197 in ?? () from /usr/lib/libapt-pkg.so.4.11 No symbol table info available. #3 0x00007fe7f0cf402b in pkgCacheGenerator::MakeStatusCache(pkgSourceList&, OpProgress*, MMap**, bool) () from /usr/lib/libapt-pkg.so.4.11 No symbol table info available. #4 0x00007fe7f0ce7c72 in pkgCacheFile::BuildCaches(OpProgress*, bool) () from /usr/lib/libapt-pkg.so.4.11 No symbol table info available. #5 0x00007fe7f0ce8094 in pkgCacheFile::Open(OpProgress*, bool) () from /usr/lib/libapt-pkg.so.4.11 No symbol table info available. #6 0x00007fe7f0fc0f4a in ?? () from /usr/lib/python2.7/dist-packages/apt_pkg.so No symbol table info available. #7 0x000000000047c215 in ?? () No symbol table info available. #8 0x000000000041ad3a in PyObject_Call () No symbol table info available. #9 0x00000000004b6c8e in PyEval_EvalFrameEx () No symbol table info available. #10 0x00000000004bce3d in PyEval_EvalCodeEx () No symbol table info available. #11 0x00000000004b6b4b in PyEval_EvalFrameEx () No symbol table info available. #12 0x00000000004b6e67 in PyEval_EvalFrameEx () No symbol table info available. #13 0x00000000004bce3d in PyEval_EvalCodeEx () No symbol table info available. #14 0x0000000000448f0f in ?? () No symbol table info available. #15 0x000000000041ad3a in PyObject_Call () No symbol table info available. #16 0x000000000043078e in ?? () No symbol table info available. #17 0x000000000041ad3a in PyObject_Call () No symbol table info available. #18 0x00000000004b5e66 in PyEval_CallObjectWithKeywords () No symbol table info available. #19 0x00007fe7f82704e8 in ?? () from /usr/lib/python2.7/dist-packages/gi/_gobject/_gobject.so No symbol table info available. #20 0x00007fe7f9db5254 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #21 0x00007fe7f9dc84fb in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #22 0x00007fe7f8267cba in ?? () from /usr/lib/python2.7/dist-packages/gi/_gobject/_gobject.so No symbol table info available. #23 0x00000000004b6659 in PyEval_EvalFrameEx () No symbol table info available. #24 0x00000000004bce3d in PyEval_EvalCodeEx () No symbol table info available. #25 0x0000000000448f0f in ?? () No symbol table info available. #26 0x000000000041ad3a in PyObject_Call () No symbol table info available. #27 0x000000000043078e in ?? () No symbol table info available. #28 0x000000000041ad3a in PyObject_Call () No symbol table info available. #29 0x00000000004b5e66 in PyEval_CallObjectWithKeywords () No symbol table info available. #30 0x00007fe7f82704e8 in ?? () from /usr/lib/python2.7/dist-packages/gi/_gobject/_gobject.so No symbol table info available. #31 0x00007fe7f9db5254 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #32 0x00007fe7f9dc84fb in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 No symbol table info available. #33 0x00007fe7f8267cba in ?? () from /usr/lib/python2.7/dist-packages/gi/_gobject/_gobject.so No symbol table info available. #34 0x00000000004b6659 in PyEval_EvalFrameEx () No symbol table info available. #35 0x00000000004bce3d in PyEval_EvalCodeEx () No symbol table info available. #36 0x00000000004490c8 in ?? () No symbol table info available. #37 0x000000000041ad3a in PyObject_Call () No symbol table info available. #38 0x00000000004b85ad in PyEval_EvalFrameEx () No symbol table info available. #39 0x00000000004b6e67 in PyEval_EvalFrameEx () No symbol table info available. #40 0x00000000004bce3d in PyEval_EvalCodeEx () No symbol table info available. #41 0x0000000000448f0f in ?? () No symbol table info available. #42 0x000000000041ad3a in PyObject_Call () No symbol table info available. #43 0x000000000043078e in ?? () No symbol table info available. #44 0x00000000004241ac in ?? () No symbol table info available. #45 0x000000000042750c in PyObject_CallFunctionObjArgs () No symbol table info available. #46 0x00007fe7ef61678b in ?? () from /usr/lib/python2.7/dist-packages/_dbus_bindings.so No symbol table info available. #47 0x00007fe7ef61738a in ?? () from /usr/lib/python2.7/dist-packages/_dbus_bindings.so No symbol table info available. #48 0x00007fe7f1824986 in dbus_connection_dispatch () from /lib/x86_64-linux-gnu/libdbus-1.so.3 No symbol table info available. #49 0x00007fe7eefde395 in ?? () from /usr/lib/x86_64-linux-gnu/libdbus-glib-1.so.2 No symbol table info available. #50 0x00007fe7f9af4b6d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #51 0x00007fe7f9af5368 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #52 0x00007fe7f9af58a2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #53 0x00007fe7f78e110d in gtk_main () from /usr/lib/libgtk-3.so.0 No symbol table info available. #54 0x00007fe7f9157a14 in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6 No symbol table info available. #55 0x00007fe7f9157435 in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6 No symbol table info available. #56 0x00007fe7fa001790 in ?? () from /usr/lib/libgirepository-1.0.so.1 No symbol table info available. #57 0x00007fe7fa002a4e in g_function_info_invoke () from /usr/lib/libgirepository-1.0.so.1 No symbol table info available. #58 0x00007fe7fa23b438 in ?? () from /usr/lib/python2.7/dist-packages/gi/_gi.so No symbol table info available. #59 0x00000000004ba28e in PyEval_EvalFrameEx () No symbol table info available. #60 0x00000000004bd43c in PyEval_EvalCodeEx () No symbol table info available. #61 0x00000000004b6b4b in PyEval_EvalFrameEx () No symbol table info available. #62 0x00000000004bce3d in PyEval_EvalCodeEx () No symbol table info available. #63 0x0000000000448f0f in ?? () No symbol table info available. #64 0x000000000041ad3a in PyObject_Call () No symbol table info available. #65 0x000000000043078e in ?? () No symbol table info available. #66 0x000000000041ad3a in PyObject_Call () No symbol table info available. #67 0x00000000004b6c8e in PyEval_EvalFrameEx () No symbol table info available. #68 0x00000000004b6e67 in PyEval_EvalFrameEx () No symbol table info available. #69 0x00000000004bce3d in PyEval_EvalCodeEx () No symbol table info available. #70 0x00000000004bd922 in PyEval_EvalCode () No symbol table info available. #71 0x00000000004dcd42 in ?? () No symbol table info available. #72 0x00000000004dd904 in PyRun_FileExFlags () No symbol table info available. #73 0x00000000004de40e in PyRun_SimpleFileExFlags () No symbol table info available. #74 0x00000000004ee80d in Py_Main () No symbol table info available. #75 0x00007fe7fad9630d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 No symbol table info available. #76 0x000000000041cb79 in _start () No symbol table info available.