rtorrent crashes with SIGSEGV, Segmentation fault on start after it crashed during running

[JLP]

One day I found rtorrent crashed after it was running for quite some time (only seeding). Now when I start to run it it always crashes. I have session saving enabled in configuration file so it looks like there is a problem when it tries to continues/load existing torrents from session. This is the crash if I run rtorrent from GDB:

Thread 1 "rtorrent" received signal SIGSEGV, Segmentation fault.
                                                               std::__relocate_a_1<torrent::ChunkPart*, torrent::ChunkPart*, std::allocator<torrent::ChunkPart> > (__first=0x555555b386b0, __last=<optimized out>, __result=0x555555b38740, __alloc=...)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/stl_uninitialized.h:1103
1103            std::__relocate_object_a(std::__addressof(*__cur),
(gdb) thread apply all bt

Thread 2 (Thread 0x7ffff6c006c0 (LWP 23095) "rtorrent disk"):
#0  0x00007ffff7921e36 in epoll_wait () from /lib64/libc.so.6
#1  0x00007ffff7d8fbb0 in torrent::PollEPoll::poll (this=0x5555556d9d00, msec=<optimized out>) at torrent/poll_epoll.cc:146
#2  torrent::PollEPoll::do_poll (this=0x5555556d9d00, timeout_usec=<optimized out>, flags=<optimized out>) at torrent/poll_epoll.cc:209
#3  0x00007ffff7d8ab78 in torrent::thread_base::event_loop (thread=0x5555556dda30) at torrent/utils/thread_base.cc:150
#4  0x00007ffff78a0f5a in start_thread () from /lib64/libc.so.6
#5  0x00007ffff79219ec in __clone3 () from /lib64/libc.so.6

Thread 1 (Thread 0x7ffff75e4740 (LWP 23080) "rtorrent"):
#0  std::__relocate_a_1<torrent::ChunkPart*, torrent::ChunkPart*, std::allocator<torrent::ChunkPart> > (__first=0x555555b386b0, __last=<optimized out>, __result=0x555555b38740, __alloc=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/stl_uninitialized.h:1103
#1  std::__relocate_a<torrent::ChunkPart*, torrent::ChunkPart*, std::allocator<torrent::ChunkPart> > (__first=<optimized out>, __last=<optimized out>, __result=0x555555b38740, __alloc=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/stl_uninitialized.h:1145
#2  std::vector<torrent::ChunkPart, std::allocator<torrent::ChunkPart> >::_S_do_relocate (__first=<optimized out>, __last=<optimized out>, __result=0x555555b38740, __alloc=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/stl_vector.h:495
#3  std::vector<torrent::ChunkPart, std::allocator<torrent::ChunkPart> >::_S_relocate (__first=<optimized out>, __last=<optimized out>, __result=0x555555b38740, __alloc=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/stl_vector.h:512
#4  std::vector<torrent::ChunkPart, std::allocator<torrent::ChunkPart> >::_M_realloc_insert<torrent::ChunkPart> (this=0x555555af7ed0, __position=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/vector.tcc:518
#5  std::vector<torrent::ChunkPart, std::allocator<torrent::ChunkPart> >::_M_insert_rval (this=0x555555af7ed0, __position=..., __v=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/vector.tcc:379
#6  std::vector<torrent::ChunkPart, std::allocator<torrent::ChunkPart> >::insert (this=0x555555af7ed0, __position=..., __x=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/stl_vector.h:1396
#7  torrent::Chunk::push_back (mapped=torrent::ChunkPart::MAPPED_MMAP, this=0x555555af7ed0, c=<synthetic pointer>...) at data/chunk.cc:88
#8  torrent::FileList::create_chunk (this=0x555555acc688, offset=<optimized out>, length=<optimized out>, prot=1) at torrent/data/file_list.cc:626
#9  torrent::FileList::create_chunk_index (this=0x555555acc688, index=<optimized out>, prot=1) at torrent/data/file_list.cc:641
#10 0x00007ffff7da70a2 in std::function<torrent::Chunk* (unsigned int, int)>::operator()(unsigned int, int) const (this=0x555555abd718, __args#0=<optimized out>, __args#1=<optimized out>) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/std_function.h:591
#11 torrent::ChunkList::get (this=0x555555abd6b0, index=10705, flags=flags@entry=4) at data/chunk_list.cc:148
#12 0x00007ffff7da7299 in torrent::HashTorrent::queue (this=0x555555acdd00, quick=true) at data/hash_torrent.cc:168
#13 0x00007ffff7d8d309 in torrent::HashTorrent::start (this=0x555555acdd00, try_quick=true) at data/hash_torrent.cc:74
#14 torrent::Download::hash_check (this=<optimized out>, tryQuick=tryQuick@entry=true) at torrent/download.cc:215
#15 0x00005555555bce5c in core::Manager::receive_hashing_changed (this=0x5555556c0050) at core/download.h:94
#16 0x00005555555b71b2 in std::function<void()>::operator() (this=<optimized out>, this=<optimized out>) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/std_function.h:591
#17 core::View::emit_changed_now (this=0x555555714f90) at core/view.cc:155
#18 0x00005555555a1dc5 in std::function<void()>::operator() (this=<optimized out>, this=<optimized out>) at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/std_function.h:591
#19 rak::priority_queue_perform (queue=0x5555556a6ce0 <taskScheduler>, t=...) at ../rak/priority_queue_default.h:98