==29869== 3 errors in context 1 of 2:
==29869== Invalid write of size 8
==29869==    at 0x44E058: memcpy (string3.h:51)
==29869==    by 0x44E058: process_result(sockaddr_storage const&, std::string const&, int, unsigned short) (nmap_dns.cc:684)
==29869==    by 0x44E5EB: read_evt_handler(npool*, nevent*, void*) (nmap_dns.cc:747)
==29869==    by 0x4F6187: event_dispatch_and_delete (nsock_event.c:373)
==29869==    by 0x4F39F4: process_iod_events (nsock_core.c:1140)
==29869==    by 0x4F8C98: iterate_through_event_lists (engine_epoll.c:347)
==29869==    by 0x4F8C98: epoll_loop (engine_epoll.c:314)
==29869==    by 0x4F33C2: nsock_engine_loop (nsock_internal.h:414)
==29869==    by 0x4F33C2: nsock_loop (nsock_core.c:942)
==29869==    by 0x44ED03: nmap_mass_rdns_core(Target**, int) (nmap_dns.cc:1175)
==29869==    by 0x44FFD5: nmap_mass_rdns(Target**, int) (nmap_dns.cc:1275)
==29869==    by 0x49FBBC: refresh_hostbatch(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:730)
==29869==    by 0x4A0087: nexthost(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:736)
==29869==    by 0x45A73E: nmap_main(int, char**) (nmap.cc:1984)
==29869==    by 0x430098: main (main.cc:228)
==29869==  Address 0x6701a70 is 16 bytes inside a block of size 56 free'd
==29869==    at 0x4C2C2BC: operator delete(void*) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==29869==    by 0x44DF76: deal_with_timedout_reads() (nmap_dns.cc:619)
==29869==    by 0x44E060: process_result(sockaddr_storage const&, std::string const&, int, unsigned short) (nmap_dns.cc:685)
==29869==    by 0x44E5EB: read_evt_handler(npool*, nevent*, void*) (nmap_dns.cc:747)
==29869==    by 0x4F6187: event_dispatch_and_delete (nsock_event.c:373)
==29869==    by 0x4F39F4: process_iod_events (nsock_core.c:1140)
==29869==    by 0x4F8C98: iterate_through_event_lists (engine_epoll.c:347)
==29869==    by 0x4F8C98: epoll_loop (engine_epoll.c:314)
==29869==    by 0x4F33C2: nsock_engine_loop (nsock_internal.h:414)
==29869==    by 0x4F33C2: nsock_loop (nsock_core.c:942)
==29869==    by 0x44ED03: nmap_mass_rdns_core(Target**, int) (nmap_dns.cc:1175)
==29869==    by 0x44FFD5: nmap_mass_rdns(Target**, int) (nmap_dns.cc:1275)
==29869==    by 0x49FBBC: refresh_hostbatch(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:730)
==29869==    by 0x4A0087: nexthost(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:736)
==29869==
==29869==
==29869== 3 errors in context 2 of 2:
==29869== Invalid write of size 8
==29869==    at 0x44E050: memcpy (string3.h:51)
==29869==    by 0x44E050: process_result(sockaddr_storage const&, std::string const&, int, unsigned short) (nmap_dns.cc:684)
==29869==    by 0x44E5EB: read_evt_handler(npool*, nevent*, void*) (nmap_dns.cc:747)
==29869==    by 0x4F6187: event_dispatch_and_delete (nsock_event.c:373)
==29869==    by 0x4F39F4: process_iod_events (nsock_core.c:1140)
==29869==    by 0x4F8C98: iterate_through_event_lists (engine_epoll.c:347)
==29869==    by 0x4F8C98: epoll_loop (engine_epoll.c:314)
==29869==    by 0x4F33C2: nsock_engine_loop (nsock_internal.h:414)
==29869==    by 0x4F33C2: nsock_loop (nsock_core.c:942)
==29869==    by 0x44ED03: nmap_mass_rdns_core(Target**, int) (nmap_dns.cc:1175)
==29869==    by 0x44FFD5: nmap_mass_rdns(Target**, int) (nmap_dns.cc:1275)
==29869==    by 0x49FBBC: refresh_hostbatch(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:730)
==29869==    by 0x4A0087: nexthost(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:736)
==29869==    by 0x45A73E: nmap_main(int, char**) (nmap.cc:1984)
==29869==    by 0x430098: main (main.cc:228)
==29869==  Address 0x6701a68 is 8 bytes inside a block of size 56 free'd
==29869==    at 0x4C2C2BC: operator delete(void*) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==29869==    by 0x44DF76: deal_with_timedout_reads() (nmap_dns.cc:619)
==29869==    by 0x44E060: process_result(sockaddr_storage const&, std::string const&, int, unsigned short) (nmap_dns.cc:685)
==29869==    by 0x44E5EB: read_evt_handler(npool*, nevent*, void*) (nmap_dns.cc:747)
==29869==    by 0x4F6187: event_dispatch_and_delete (nsock_event.c:373)
==29869==    by 0x4F39F4: process_iod_events (nsock_core.c:1140)
==29869==    by 0x4F8C98: iterate_through_event_lists (engine_epoll.c:347)
==29869==    by 0x4F8C98: epoll_loop (engine_epoll.c:314)
==29869==    by 0x4F33C2: nsock_engine_loop (nsock_internal.h:414)
==29869==    by 0x4F33C2: nsock_loop (nsock_core.c:942)
==29869==    by 0x44ED03: nmap_mass_rdns_core(Target**, int) (nmap_dns.cc:1175)
==29869==    by 0x44FFD5: nmap_mass_rdns(Target**, int) (nmap_dns.cc:1275)
==29869==    by 0x49FBBC: refresh_hostbatch(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:730)
==29869==    by 0x4A0087: nexthost(HostGroupState*, addrset const*, scan_lists*, int) (targets.cc:736)
==29869==
==29869== ERROR SUMMARY: 6 errors from 2 contexts (suppressed: 0 from 0)