вс, 9 авг. 2020 г. в 16:30, Pavel Timofeev <tim...@gmail.com>:
> > Pavel Timofeev <tim...@gmail.com>: > >> Hello >> >> I'd like to take advantage of net/microsocks port - a small SOCKSv5 >> server. >> It's v1.0.1 (https://github.com/rofl0r/microsocks/tree/v1.0.1) under >> 12.1 RELEASE amd64. >> It works OK with firefox until I ask firefox to proxy DNS via socks also. >> It cashes after getaddrinfo() call. >> I have quite poor C knowledge and I can't understand what's wrong with it. >> Parameters passed to getaddrinfo() looks OK >> Can anybody advise where to look at also? >> >> >> >> $ gdb92 microsocks microsocks.core >> >> >> GNU gdb (GDB) 9.2 [GDB v9.2 for FreeBSD] >> >> Copyright (C) 2020 Free Software Foundation, Inc. >> >> License GPLv3+: GNU GPL version 3 or later < >> http://gnu.org/licenses/gpl.html> >> >> >> This is free software: you are free to change and redistribute it. >> >> >> There is NO WARRANTY, to the extent permitted by law. >> >> >> Type "show copying" and "show warranty" for details. >> >> This GDB was configured as "x86_64-portbld-freebsd12.1". >> >> >> Type "show configuration" for configuration details. >> >> For bug reporting instructions, please see: >> >> <http://www.gnu.org/software/gdb/bugs/>. >> >> Find the GDB manual and other documentation resources online at: >> >> >> <http://www.gnu.org/software/gdb/documentation/>. >> >> >> >> For help, type "help". >> Type "apropos word" to search for commands related to "word"... >> >> >> Reading symbols from microsocks... >> >> [New LWP 100579] >> [New LWP 100347] >> Core was generated by `./microsocks'. >> >> Program terminated with signal SIGSEGV, Segmentation fault. >> >> >> #0 0x00000008003e5467 in _getht (hostf=0x7fffdfffd238, >> name=0x7fffdfffda20 "freebsd.org", >> >> >> pai=0x7fffdfffd5a0, cur=0x7fffdfffd240) at >> /usr/src/lib/libc/net/getaddrinfo.c:2476 >> >> >> 2476 { >> [Current thread is 1 (LWP 100579)] >> >> (gdb) bt >> #0 0x00000008003e5467 in _getht (hostf=0x7fffdfffd238, >> name=0x7fffdfffda20 "freebsd.org", pai=0x7fffdfffd5a0, >> cur=0x7fffdfffd240) at /usr/src/lib/libc/net/getaddrinfo.c:2476 >> #1 0x00000008003e4990 in _files_getaddrinfo (rv=0x7fffdfffd670, >> cb_data=<optimized out>, ap=<optimized out>) at >> /usr/src/lib/libc/net/getaddrinfo.c:2515 >> #2 0x000000080040df6c in _nsdispatch (retval=0x7fffdfffd670, >> disp_tab=0x8004482e0, database=<optimized out>, method_name=0x8002bafb7 >> "getaddrinfo", defaults=<optimized out>) >> at /usr/src/lib/libc/net/nsdispatch.c:716 >> #3 0x00000008003e30b3 in explore_fqdn (pai=0x1, hostname=<optimized >> out>, servname=0x7fffdfffd860 "80", res=<optimized out>) at >> /usr/src/lib/libc/net/getaddrinfo.c:1945 >> #4 getaddrinfo (hostname=<optimized out>, servname=0x7fffdfffd860 "80", >> hints=<optimized out>, res=0x7fffdfffda18) at >> /usr/src/lib/libc/net/getaddrinfo.c:576 >> #5 0x00000000002037f6 in resolve (host=0x7fffdfffda20 "freebsd.org", >> port=80, addr=0x7fffdfffda18) at server.c:14 >> #6 0x00000000002030e8 in connect_socks_target (buf=0x7fffdfffdba0 >> "\005\001", n=18, client=0x800689038) at sockssrv.c:136 >> #7 0x00000000002029e3 in clientthread (data=0x800689030) at >> sockssrv.c:317 >> #8 0x000000080025a736 in thread_start (curthread=0x800683500) at >> /usr/src/lib/libthr/thread/thr_create.c:292 >> #9 0x0000000000000000 in ?? () >> Backtrace stopped: Cannot access memory at address 0x7fffdfffe000 >> (gdb) f 5 >> #5 0x00000000002037f6 in resolve (host=0x7fffdfffda20 "freebsd.org", >> port=80, addr=0x7fffdfffda18) at server.c:14 >> 14 return getaddrinfo(host, port_buf, &hints, addr); >> (gdb) p host >> $1 = 0x7fffdfffda20 "freebsd.org" >> (gdb) p port_buf >> $2 = "80\000\000\b\000\000" >> (gdb) p hints >> $3 = {ai_flags = 1, ai_family = 0, ai_socktype = 1, ai_protocol = 0, >> ai_addrlen = 0, ai_canonname = 0x0, ai_addr = 0x0, ai_next = 0x0} >> (gdb) p *addr >> $4 = (struct addrinfo *) 0x0 >> (gdb) list >> 9 .ai_socktype = SOCK_STREAM, >> 10 .ai_flags = AI_PASSIVE, >> 11 }; >> 12 char port_buf[8]; >> 13 snprintf(port_buf, sizeof port_buf, "%u", port); >> 14 return getaddrinfo(host, port_buf, &hints, addr); >> 15 } >> 16 >> 17 int server_bindtoip(const struct server *server, int fd) { >> 18 if(server->bindaddr.v4.sin_family != AF_UNSPEC) >> >> >> >> However, it works OK under Linux no matter if DNS proxied or not. >> Thank you! >> > > > > I'm not asking for full debug session, just a few clues or an advice which > way to dig probably. > Ahh, it fiddles with PTHREAD_STACK_MIN. It's the root cause. _______________________________________________ freebsd-ports@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-ports To unsubscribe, send any mail to "freebsd-ports-unsubscr...@freebsd.org"