Simsearch query segfault when using IVF indexes, but not default/flat index about deepdetect HOT 6 CLOSED

Thread 37 "dede" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffe50ffd700 (LWP 10616)]
0x0000555555c49c41 in faiss::OnDiskInvertedLists::OngoingPrefetch::Thread::one_list() ()
(gdb) bt
#0  0x0000555555c49c41 in faiss::OnDiskInvertedLists::OngoingPrefetch::Thread::one_list() ()
#1  0x0000555555c49d7b in faiss::OnDiskInvertedLists::OngoingPrefetch::prefetch_list(void*) ()
#2  0x00007fffda3366db in start_thread (arg=0x7ffe50ffd700) at pthread_create.c:463
#3  0x00007fffd20aa71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

    "index_type": "IVF20,SQ8",
    "train_samples": 10,
    "nprobe": 8

-rw-r--r-- 1 dgtlmoon dgtlmoon    181948 Nov 15 08:49 index.faiss
-rw-r--r-- 1 dgtlmoon dgtlmoon   4194304 Nov 15 08:49 index_mmap.faiss

[2021-11-15 07:51:19.101] [torchlib] [info] Network initialization done.
[2021-11-15 07:51:19.102] [test] [info] Using pre-trained weights from /var/www/xxx/web/files/trainer/simsearch/model/model_iter_13500.caffemodel
[2021-11-15 07:51:19.408] [torchlib] [info] Attempting to upgrade batch norm layers using deprecated params: /var/www/xxx/web/files/trainer/simsearch/model/model_iter_13500.caffemodel
[2021-11-15 07:51:19.408] [torchlib] [info] Successfully upgraded batch norm layers using deprecated params.
[2021-11-15 07:51:19.512] [test] [info] Net total flops=3858534272 / total params=26063936
[2021-11-15 07:51:19.512] [test] [info] detected network type is classification
[2021-11-15 07:51:19.513] [api] [info] HTTP/1.1 "PUT /services/test" <n/a> 201 508ms
open existing index db
[2021-11-15 07:51:23.846] [torchlib] [info] Opened lmdb /var/www/xxx/web/files/trainer/simsearch/model//names.bin
bash: line 1:     7 Segmentation fault      (core dumped) ./dede -host 0.0.0.0

      message(STATUS "Fetching FAISS")
      add_definitions(-DUSE_FAISS)
      add_definitions(-DUSE_SIMSEARCH)
      ExternalProject_Add(
        faisslib
        PREFIX faiss
        SOURCE_DIR ${CMAKE_BINARY_DIR}/faiss/src/faiss
        GIT_REPOSITORY https://github.com/facebookresearch/faiss
        GIT_TAG main
        UPDATE_DISCONNECTED 1
        CONFIGURE_COMMAND cmake ${CONFIGURE_OPTS} -B build .
        BUILD_COMMAND make -C build -j${N}
        INSTALL_COMMAND ""
        BUILD_IN_SOURCE 1
      )