$ qbittorrent
Peer ID: -qB2490-
*************************************************************
Catching SIGSEGV, please report a bug at http://bug.qbittorrent.org
and provide the following backtrace:
stack trace:
[0xcc5400]
/lib/libcrypto.so.0.9.8 : ()+0x4467d [0x42667d]
/lib/libcrypto.so.0.9.8 : SHA1_Update()+0x155 [0x4279f5]
/usr/lib/libtorrent-rasterbar.so.6 : libtorrent::torrent_info::parse_info_section(libtorrent::lazy_entry const&, boost::system::error_code&)+0x11b [0x783f0b]
/usr/lib/libtorrent-rasterbar.so.6 : libtorrent::torrent_info::parse_torrent_file(libtorrent::lazy_entry const&, boost::system::error_code&)+0x84d [0x78540d]
/usr/lib/libtorrent-rasterbar.so.6 : libtorrent::torrent_info::torrent_info(boost::filesystem::basic_path<std::string, boost::filesystem::path_traits> const&)+0x1b3 [0x78b673]
qbittorrent : Bittorrent::addTorrentsFromScanFolder(QStringList&)+0xe4 [0x80c87f4]
qbittorrent : Bittorrent::qt_metacall(QMetaObject::Call, int, void**)+0xbb1 [0x8232561]
/usr/lib/libQtCore.so.4 : QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**)+0x3a [0xae18ca]
/usr/lib/libQtCore.so.4 : QMetaObject::activate(QObject*, QMetaObject const*, int, void**)+0x29d [0xaf46ad]
qbittorrent : ScanFoldersModel::torrentsAdded(QStringList&)+0x35 [0x8239815]
qbittorrent : ScanFoldersModel::qt_metacall(QMetaObject::Call, int, void**)+0x4d [0x823986d]
/usr/lib/libQtCore.so.4 : QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**)+0x3a [0xae18ca]
/usr/lib/libQtCore.so.4 : QMetaObject::activate(QObject*, QMetaObject const*, int, void**)+0x29d [0xaf46ad]
qbittorrent : FileSystemWatcher::torrentsAdded(QStringList&)+0x35 [0x82382e5]
qbittorrent : FileSystemWatcher::addPath(QString const&)+0x1c2 [0x81248f2]
qbittorrent : ScanFoldersModel::addPath(QString const&, bool)+0x1cc [0x812394c]
qbittorrent : Bittorrent::configureSession()+0x986 [0x80b7f26]
qbittorrent : Bittorrent::Bittorrent()+0xf20 [0x80c1010]
qbittorrent : GUI::GUI(QWidget*, QStringList)+0xd23 [0x813e503]
qbittorrent : main()+0x1085 [0x809dd75]
/lib/libc.so.6 : __libc_start_main()+0xe7 [0x1ceece7]
qbittorrent() [0x80988c1]
Segmentation fault
Seems to be a crash in libtorrent when loading a torrent from a scan directory.
Does it happen for all the torrents or one in particular? Also please make sure that your qBittorrent was built against the libtorrent version currently installed on your system.