(gdb) info threads 65 Thread 1084229984 (LWP 12627) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 64 Thread 1094719840 (LWP 12628) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 63 Thread 1105209696 (LWP 12629) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 62 Thread 1115699552 (LWP 12630) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 61 Thread 1126189408 (LWP 12631) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 60 Thread 1136679264 (LWP 12632) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 59 Thread 1147169120 (LWP 12633) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 58 Thread 1157658976 (LWP 12634) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 57 Thread 1168148832 (LWP 12635) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 56 Thread 1178638688 (LWP 12636) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 55 Thread 1189128544 (LWP 12637) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 54 Thread 1199618400 (LWP 12638) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 53 Thread 1210108256 (LWP 12639) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 52 Thread 1220598112 (LWP 12640) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 51 Thread 1231087968 (LWP 12641) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 50 Thread 1241577824 (LWP 12642) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 49 Thread 1252067680 (LWP 12643) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 48 Thread 1262557536 (LWP 12644) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 47 Thread 1273047392 (LWP 12645) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 46 Thread 1283537248 (LWP 12646) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 45 Thread 1294027104 (LWP 12647) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 44 Thread 1304516960 (LWP 12648) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 43 Thread 1315006816 (LWP 12649) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 42 Thread 1325496672 (LWP 12650) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 41 Thread 1335986528 (LWP 12651) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 40 Thread 1346476384 (LWP 12652) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 39 Thread 1356966240 (LWP 12653) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 38 Thread 1367456096 (LWP 12654) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 37 Thread 1377945952 (LWP 12655) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 36 Thread 1388435808 (LWP 12656) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 35 Thread 1398925664 (LWP 12657) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 34 Thread 1409415520 (LWP 12658) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 33 Thread 1419905376 (LWP 12659) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 32 Thread 1430395232 (LWP 12660) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 31 Thread 1440885088 (LWP 12661) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 ---Type to continue, or q to quit--- 30 Thread 1451374944 (LWP 12662) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 29 Thread 1461864800 (LWP 12663) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 28 Thread 1472354656 (LWP 12664) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 27 Thread 1482844512 (LWP 12665) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 26 Thread 1493334368 (LWP 12666) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 25 Thread 1503824224 (LWP 12667) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 24 Thread 1514314080 (LWP 12668) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 23 Thread 1524803936 (LWP 12669) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 22 Thread 1535293792 (LWP 12670) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 21 Thread 1545783648 (LWP 12671) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 20 Thread 1556273504 (LWP 12672) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 19 Thread 1566763360 (LWP 12673) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 18 Thread 1577253216 (LWP 12674) 0x0000000000410ff6 in rl_add_proxy () 17 Thread 1587743072 (LWP 12675) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 16 Thread 1598232928 (LWP 12676) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 15 Thread 1608722784 (LWP 12677) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 14 Thread 1619212640 (LWP 12678) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 13 Thread 1629702496 (LWP 12679) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 12 Thread 1640192352 (LWP 12680) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 11 Thread 1650682208 (LWP 12681) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 10 Thread 1661172064 (LWP 12682) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 9 Thread 1671661920 (LWP 12683) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 8 Thread 1682151776 (LWP 12684) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 7 Thread 1692641632 (LWP 12685) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 6 Thread 1703131488 (LWP 12686) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 5 Thread 1713621344 (LWP 12687) 0x000000000040ce19 in modcall () 4 Thread 1724111200 (LWP 12688) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 3 Thread 1734601056 (LWP 12689) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 2 Thread 1745090912 (LWP 12690) 0x000000367200a66f in sem_wait () from /lib64/tls/libpthread.so.0 1 Thread 182895239680 (LWP 12626) 0x000000313a0915e8 in Perl_newHV () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so (gdb) info program Using the running image of attached process 12626. Program stopped at 0x313a0915e8. It stopped with signal SIGSEGV, Segmentation fault. (gdb) bt #0 0x000000313a0915e8 in Perl_newHV () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #1 0x000000313a093040 in Perl_hv_undef () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #2 0x000000313a0a2031 in Perl_sv_clear () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #3 0x000000313a0a242d in Perl_sv_free () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #4 0x000000313a040256 in Perl_gp_free () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #5 0x000000313a0a2008 in Perl_sv_clear () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #6 0x000000313a0a242d in Perl_sv_free () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #7 0x000000313a0a0591 in Perl_sv_add_arena () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #8 0x000000313a0a067b in Perl_sv_clean_all () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #9 0x000000313a03ca50 in perl_destruct () from /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE/libperl.so #10 0x0000002a95aa45e9 in rlm_perl_destruct (perl=0x149cbc0) at rlm_perl.c:302 #11 0x0000002a95aa7240 in perl_detach (instance=Variable "instance" is not available. ) at rlm_perl.c:1241 #12 0x000000000040bd46 in detach_modules () #13 0x00000000004104c8 in main ()