[Aptitude-devel] Bug#834790: aptitude hangs at "Loading cache" when unable to download package list

[Christian Klein]

I encountered the same problem.

After installing the cwidget and aptitude debug packages, I got the
following stack traces:

(gdb) thread apply all bt

Thread 4 (Thread 0x7f3d3c885700 (LWP 8565)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f3d410528f4 in
cwidget::threads::condition::timed_wait<cwidget::threads::mutex::lock>
(until=..., l=<synthetic pointer>, this=0x7f3d412f8260
<cwidget::toplevel::timeout_thread::instance+96>) at
../../src/cwidget/generic/threads/threads.h:554
#2  cwidget::toplevel::timeout_thread::operator() (this=0x7f3d412f8200
<cwidget::toplevel::timeout_thread::instance>) at toplevel.cc:795
#3  cwidget::threads::bootstrap_proxy<cwidget::toplevel::timeout_thread>::operator()
(this=<synthetic pointer>) at
../../src/cwidget/generic/threads/threads.h:1008
#4  cwidget::threads::thread::bootstrap<cwidget::threads::bootstrap_proxy<cwidget::toplevel::timeout_thread>
> (p=<optimized out>) at
../../src/cwidget/generic/threads/threads.h:117
#5  0x00007f3d400aa464 in start_thread (arg=0x7f3d3c885700) at
pthread_create.c:333
#6  0x00007f3d3f54c30d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f3d3d086700 (LWP 8564)):
#0  do_sigwait (set=<optimized out>, set at entry=0x7f3d3d085e20,
sig=sig at entry=0x7f3d3d085d9c) at
../sysdeps/unix/sysv/linux/sigwait.c:64
#1  0x00007f3d400b3cdd in __sigwait (set=set at entry=0x7f3d3d085e20,
sig=sig at entry=0x7f3d3d085d9c) at
../sysdeps/unix/sysv/linux/sigwait.c:96
#2  0x00007f3d41049d13 in cwidget::toplevel::signal_thread::operator()
(this=<optimized out>) at toplevel.cc:588
#3  0x00007f3d4105271e in
cwidget::threads::thread::bootstrap<cwidget::toplevel::signal_thread>
(p=<optimized out>) at ../../src/cwidget/generic/threads/threads.h:117
#4  0x00007f3d400aa464 in start_thread (arg=0x7f3d3d086700) at
pthread_create.c:333
#5  0x00007f3d3f54c30d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f3d3d887700 (LWP 8563)):
#0  0x00007f3d3f544f73 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f3d41052a8f in cwidget::toplevel::input_thread::operator()
(this=this at entry=0x7f3d412f8301
<cwidget::toplevel::input_thread::instance>) at toplevel.cc:484
#2  0x00007f3d41052bc1 in
cwidget::threads::bootstrap_proxy<cwidget::toplevel::input_thread>::operator()
(this=<synthetic pointer>) at
../../src/cwidget/generic/threads/threads.h:1008
#3  cwidget::threads::thread::bootstrap<cwidget::threads::bootstrap_proxy<cwidget::toplevel::input_thread>
> (p=<optimized out>) at
../../src/cwidget/generic/threads/threads.h:117
#4  0x00007f3d400aa464 in start_thread (arg=0x7f3d3d887700) at
pthread_create.c:333
#5  0x00007f3d3f54c30d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f3d41edb780 (LWP 8562)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f3d4104a663 in
cwidget::threads::condition::wait<cwidget::threads::mutex::lock>
(l=<synthetic pointer>, this=0x7f3d412f85d0
<cwidget::toplevel::eventq+80>) at
../../src/cwidget/generic/threads/threads.h:508
#2  cwidget::threads::condition::wait<cwidget::threads::mutex::lock,
cwidget::threads::event_queue<cwidget::toplevel::event*>::not_empty>
(p=..., l=<synthetic pointer>, this=0x7f3d412f85d0
<cwidget::toplevel::eventq+80>) at
../../src/cwidget/generic/threads/threads.h:527
#3  cwidget::threads::event_queue<cwidget::toplevel::event*>::get
(this=0x7f3d412f8580 <cwidget::toplevel::eventq>) at
../../src/cwidget/generic/threads/event_queue.h:94
#4  cwidget::toplevel::mainloop (synch=synch at entry=0) at toplevel.cc:1167
#5  0x000055c03a9a689a in ui_main () at ../../src/ui.cc:3134
#6  0x000055c03a8c9825 in main (argc=<optimized out>, argv=<optimized
out>) at ../../src/main.cc:1427