Re: [Openvpn-devel] [PATCH] openvpn over ipv6 support -v0.4.6

[JuanJo Ciarlante]

On Thu, Oct 1, 2009 at 8:22 PM, Marcel Pennewiß
<mailingli...@pennewiss.de> wrote:
>
> On Thursday 01 October 2009 12:14:14 JuanJo Ciarlante wrote:
> > Could you please show a diff between config.h from stock
> > and patched build?
>
> the problem seems to be caused by
> ./configure ... --disable-iproute2.

this worked ok for me (?)

>
> if i enable iproute2:
> ./configure ... --enable-iproute2
> the build of openvpn works.
>
> But if the first client connects the openvpn server generate a segfault (with
> tcp-server and tcp6-server as option).
> The last lines via strace - maybe they could help you:

Thanks for the detailed report, I'll try to reproduce this
and come back to you.

Cheers,

>
> [    2b82cc06da13] epoll_wait(6, {{EPOLLIN, {u32=2, u64=2}}}, 1028, 10000) = 1
> [    2b82cbd8e840]
> read(5, 
> "\377\377\377\377\377\377\0\377Gs\311\210\10\6\0\1\10\0\6\4\0\1\0\377Gs\311\210\300\250*s\0"...,
> 1532) = 42
> [    2b82cc06da13] epoll_wait(6, {{EPOLLIN, {u32=2, u64=2}}}, 1028, 10000) = 1
> [    2b82cbd8e840]
> read(5, 
> "\377\377\377\377\377\377\0\377Gs\311\210\10\6\0\1\10\0\6\4\0\1\0\377Gs\311\210\300\250*s\0"...,
> 1532) = 42
> [    2b82cc06da13] epoll_wait(6, {{EPOLLIN, {u32=2, u64=2}}}, 1028, 10000) = 1
> [    2b82cbd8e840]
> read(5, 
> "\377\377\377\377\377\377\0\377Gs\311\210\10\6\0\1\10\0\6\4\0\1\0\377Gs\311\210\300\250*s\0"...,
> 1532) = 42
> [    2b82cc06da13] epoll_wait(6, {{EPOLLIN, {u32=1, u64=1}}}, 1028, 10000) = 1
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 72,
> MSG_NOSIGNAL, NULL, 0) = 72
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 61,
> MSG_NOSIGNAL, NULL, 0) = 61
> [    2b82cc06a2ea] mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|
> MAP_ANONYMOUS, -1, 0) = 0x2b82cb190000
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 64,
> MSG_NOSIGNAL, NULL, 0) = 64
> [    2b82cc06602a] brk(0x6dd000)        = 0x6dd000
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 100,
> MSG_NOSIGNAL, NULL, 0) = 100
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 108,
> MSG_NOSIGNAL, NULL, 0) = 108
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 76,
> MSG_NOSIGNAL, NULL, 0) = 76
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 86,
> MSG_NOSIGNAL, NULL, 0) = 86
> [    2b82cbd8eac0] accept(4, {sa_family=AF_INET6, sin6_port=htons(55430),
> inet_pton(AF_INET6, "::ffff:141.xx.xx.xxx", &sin6_addr), sin6_flowinfo=0,
> sin6_scope_id=0}, [30146066212978716]) = 7
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 105,
> MSG_NOSIGNAL, NULL, 0) = 105
> [    2b82cc06e20a] getsockopt(7, SOL_SOCKET, SO_SNDBUF, [17180000256], [4]) =
> 0
> [    2b82cc06e20a] getsockopt(7, SOL_SOCKET, SO_RCVBUF, [30146066213109760],
> [4]) = 0
> [    2b82cc06e68a] setsockopt(7, SOL_SOCKET, SO_SNDBUF, [65536], 4) = 0
> [    2b82cc06e68a] setsockopt(7, SOL_SOCKET, SO_RCVBUF, [65536], 4) = 0
> [    2b82cc06e20a] getsockopt(7, SOL_SOCKET, SO_SNDBUF, [17180000256], [4]) =
> 0
> [    2b82cc06e20a] getsockopt(7, SOL_SOCKET, SO_RCVBUF, [30146066213109760],
> [4]) = 0
> [    2b82cc06e4b5] sendto(3, "<29>Oct  1 20:24:45 openvpn[15698"..., 90,
> MSG_NOSIGNAL, NULL, 0) = 90
> [    2b82cbd8ea1b] fcntl(7, F_SETFL, O_RDONLY|O_NONBLOCK) = 0
> [    2b82cbd8ea1b] fcntl(7, F_SETFD, FD_CLOEXEC) = 0
> [    2b82cc06e68a] setsockopt(7, SOL_IP, IP_RECVERR, [1], 4) = 0
> [    2b82cc017fd0] --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> Process 15698 detached
>
>
> Oct  1 20:09:45 larissa openvpn[15446]: segfault at 0000000000000002 rip
> 00002b07e075bfd0 rsp 00007fffcb1f79b8 error 4
>
> Marcel
>
>
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--
--JuanJo ; echo j...@gomosglep.com | sed 's/[SPAM]//g'