aptitude just crashed with a segfault for me when updating the package
list while a mirror update was close to be finished on the used Debian
mirror. (Haven't seen a segfault in aptitude for quite a while, so I
assume this is either a rather seldom race condition or — probably less
likely — triggered by a recent update of apt.)
[2(1)/...] Resolving dependencies.
e: Examine !: Apply .: Next ,: Previous
Ouch! Got SIGSEGV, dying.. 100%
[1] 20272 segmentation fault (core dumped) aptitude -u
aptitude -u 554.84s user 35.81s system 144% cpu 6:49.49 total
Backtrace:
Reading symbols from /usr/bin/aptitude-curses...
Reading symbols from /usr/lib/debug/.build-id/7b/241a91e617342e555693ae8e22daf38a7276f9.debug...
Illegal process-id: 20272-0-0-11-1672996274-c6--usr-bin-aptitude-curses.core.
[New LWP 20272]
[New LWP 20273]
[New LWP 20274]
[New LWP 20275]
[New LWP 24174]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `aptitude -u'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 operator+<pkgCache::DependencyData> (m=..., p=<optimized out>) at ./obj-x86_64-linux-gnu/include/apt-pkg/pkgcache.h:104
104 ./obj-x86_64-linux-gnu/include/apt-pkg/pkgcache.h: No such file or directory.
[Current thread is 1 (Thread 0x7f9b1d2228c0 (LWP 20272))]
(gdb) bt
#0 operator+<pkgCache::DependencyData> (m=..., p=<optimized out>) at ./obj-x86_64-linux-gnu/include/apt-pkg/pkgcache.h:104
#1 pkgCache::DepIterator::operator++ (this=this@entry=0x7ffd004162b0) at ./apt-pkg/pkgcache.cc:474
#2 0x000055598034ea72 in surrounding_or (dep=..., start=..., end=..., cache=<optimized out>) at ../../../../src/generic/apt/apt.cc:813
#3 0x00005559802cd6c4 in aptitude_resolver_dep::aptitude_resolver_dep (this=0x7ffd00416470, dep=<optimized out>, _prv=<optimized out>,
_cache=<optimized out>) at ../../../src/generic/apt/aptitude_resolver_universe.h:422
#4 0x00005559804436a1 in aptitude_resolver_version::dep_iterator::operator* (this=0x7ffd004164f0)
at ../../../../src/generic/apt/aptitude_resolver_universe.h:813
#5 aptitude_universe::dep_iterator::operator* (this=0x7ffd004164c0) at ../../../../src/generic/apt/aptitude_resolver_universe.h:1235
#6 generic_problem_resolver<aptitude_universe>::generic_problem_resolver (this=this@entry=0x555983f4f990, _step_score=_step_score@entry=-10,
_broken_score=_broken_score@entry=-100, _unfixed_soft_score=_unfixed_soft_score@entry=-200, infinity=infinity@entry=1000000,
_full_solution_score=_full_solution_score@entry=50, _unfixed_soft_cost=..., _future_horizon=50, _initial_state=..., _universe=...)
at ../../../../src/generic/problemresolver/problemresolver.h:3786
#7 0x0000555980434926 in aptitude_resolver::aptitude_resolver (this=this@entry=0x555983f4f990, step_score=-10, broken_score=broken_score@entry=-100,
unfixed_soft_score=unfixed_soft_score@entry=-200, infinity=infinity@entry=1000000, resolution_score=resolution_score@entry=50, unfixed_soft_cost=...,
future_horizon=50, _cost_settings=..., initial_installations=..., cache=0x555981a4c0d0, _policy=0x5559896c0450)
at ../../../../src/generic/apt/aptitude_resolver.cc:734
#8 0x00005559803b3b16 in resolver_manager::create_resolver (this=0x5559818227c0) at ../../../../src/generic/apt/resolver_manager.cc:968
#9 0x00005559803b4dcb in resolver_manager::maybe_create_resolver (this=0x5559818227c0, consider_policybroken=<optimized out>)
at ../../../../src/generic/apt/resolver_manager.cc:805
#10 0x00005559803b556f in resolver_manager::maybe_create_resolver (this=0x5559818227c0) at ../../../../src/generic/apt/resolver_manager.h:474
#11 resolver_manager::resolver_manager (this=this@entry=0x5559818227c0, _cache_file=_cache_file@entry=0x555985809060, _initial_installations=...)
at ../../../../src/generic/apt/resolver_manager.cc:195
#12 0x00005559803564eb in apt_load_cache (progress_bar=progress_bar@entry=0x555981a39d60, do_initselections=do_initselections@entry=true,
operation_needs_lock=operation_needs_lock@entry=true, status_fname=status_fname@entry=0x0, reset_reinstall=reset_reinstall@entry=false)
at ../../../../src/generic/util/immset.h:258
#13 0x000055598038e098 in download_update_manager::finish (this=this@entry=0x55598d035a80, res=res@entry=pkgAcquire::Continue, progress=0x555981a39d60,
k=...) at ../../../../src/generic/apt/download_update_manager.cc:209
#14 0x00005559802c0c90 in ui_download_manager::done (this=0x55598d136d40, t=<optimized out>, res=pkgAcquire::Continue)
at /usr/include/cwidget/generic/util/ref_ptr.h:159
#15 0x000055598023734c in sigc::slot2<void, download_thread*, pkgAcquire::RunResult>::operator() (_A_a2=@0x7ffd00417464: pkgAcquire::Continue,
_A_a1=@0x7ffd00417468: 0x55598450dca0, this=0x7ffd00417470) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:798
#16 (anonymous namespace)::do_download_complete (t=<optimized out>, res=<optimized out>, continuation=...) at ../../src/download_thread.cc:220
#17 0x000055598023bcd3 in sigc::pointer_functor3<download_thread*, pkgAcquire::RunResult, safe_slot2<void, download_thread*, pkgAcquire::RunResult>, void>::operator() (this=0x555981a12b60, _A_a3=..., _A_a2=@0x555981a12b70: pkgAcquire::Continue, _A_a1=@0x555981a12b68: 0x55598450dca0)
at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:185
#18 sigc::adaptor_functor<sigc::pointer_functor3<download_thread*, pkgAcquire::RunResult, safe_slot2<void, download_thread*, pkgAcquire::RunResult>, void> >::operator()<download_thread*&, pkgAcquire::RunResult&, safe_slot2<void, download_thread*, pkgAcquire::RunResult>&> (_A_arg3=...,
_A_arg2=@0x555981a12b70: pkgAcquire::Continue, _A_arg1=@0x555981a12b68: 0x55598450dca0, this=0x555981a12b58)
at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:128
#19 sigc::bind_functor<-1, sigc::pointer_functor3<download_thread*, pkgAcquire::RunResult, safe_slot2<void, download_thread*, pkgAcquire::RunResult>, void>, download_thread*, pkgAcquire::RunResult, safe_slot2<void, download_thread*, pkgAcquire::RunResult>, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator() (
this=0x555981a12b50) at /usr/include/sigc++-2.0/sigc++/adaptors/bind.h:1529
#20 sigc::internal::slot_call0<sigc::bind_functor<-1, sigc::pointer_functor3<download_thread*, pkgAcquire::RunResult, safe_slot2<void, download_thread*, pkgAcquire::RunResult>, void>, download_thread*, pkgAcquire::RunResult, safe_slot2<void, download_thread*, pkgAcquire::RunResult>, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, void>::call_it (rep=0x555981a12b20) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:136
#21 0x00005559802bc302 in sigc::slot0<void>::operator() (this=0x7ffd004174f0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:535
#22 aptitude::safe_slot_event::dispatch (this=<optimized out>) at ../../src/safe_slot_event.h:40
#23 0x00007f9b1d85e345 in cwidget::toplevel::mainloop () at ./src/cwidget/toplevel.cc:1171
#24 0x00005559802abf91 in ui_main () at ../../src/ui.cc:3147
#25 0x00005559801f3b49 in main (argc=<optimized out>, argv=<optimized out>) at ../../src/main.cc:1427