Re: Can't resolve hosts via dns on the command line with latest -current
On 2002-11-04 20:25, Kelly Yancey <[EMAIL PROTECTED]> wrote: > Let me know if this fixes things for you. Thanks, Yes, the patch fixed things for me. Thanks :))) %%% Index: kern/uipc_socket.c === RCS file: /home/ncvs/src/sys/kern/uipc_socket.c,v retrieving revision 1.135 diff -u -p -r1.135 uipc_socket.c --- kern/uipc_socket.c 2 Nov 2002 05:14:30 - 1.135 +++ kern/uipc_socket.c 5 Nov 2002 04:14:20 - @@ -1794,7 +1794,7 @@ filt_soread(struct knote *kn, long hint) return (1); if (kn->kn_sfflags & NOTE_LOWAT) return (kn->kn_data >= kn->kn_sdata); - return (kn->kn_data >= so->so_rcv.sb_lowat); + return (so->so_rcv.sb_cc >= so->so_rcv.sb_lowat); } static void Index: kern/uipc_socket2.c === RCS file: /home/ncvs/src/sys/kern/uipc_socket2.c,v retrieving revision 1.105 diff -u -p -r1.105 uipc_socket2.c --- kern/uipc_socket2.c 2 Nov 2002 05:14:30 - 1.105 +++ kern/uipc_socket2.c 5 Nov 2002 04:19:05 - @@ -705,6 +705,8 @@ sbcompress(sb, m, n) (unsigned)m->m_len); n->m_len += m->m_len; sb->sb_cc += m->m_len; + if (m->m_type != MT_DATA) + sb->sb_ctl += m->m_len; m = m_free(m); continue; } @@ -774,6 +776,8 @@ sbdrop(sb, len) m->m_len -= len; m->m_data += len; sb->sb_cc -= len; + if (m->m_type != MT_DATA) + sb->sb_ctl -= len; break; } len -= m->m_len; %%% To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest-current
Kelly Yancey wrote: > Thanks for the great trace and your patience. I believe I found the root of > the problem. Could you please try the attached patch? Works for me, thanks. Doug To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest -current
At 08:25 PM 11/4/2002 -0800, Kelly Yancey wrote:
>On Tue, 5 Nov 2002, Giorgos Keramidas wrote:
>
>> On 2002-11-04 18:38, Kelly Yancey <[EMAIL PROTECTED]> wrote:
>> > Thanks for the info. Are you sure that you only reverted the one delta?
>>
>> Yes. I just recompiled the kernel from -rHEAD and started logging
>> things while I connected to my dialup provider. Apparently lo0 does
>> have the 127.0.0.1 address *and* the LOOPBACK flag but somehow fails.
>>
>> When (near the end of the following log) I back only this change out,
>> the problems go away :/
>>
>
> Thanks for the great trace and your patience. I believe I found the root of
>the problem. Could you please try the attached patch? I'm afraid that
>if I hadn't gotten thown off this morning be my lo0 lacking a
>127.0.0.1 address I probably would have found it much, much sooner
>(it's pretty obvious in hindsight). At the very least, I also caught a
>couple of pieces of code that are manipulating the socket buffer behind
>sballoc() and sbfree()'s back so I've modified them to update the sb_cc
>counter directly also.
> Let me know if this fixes things for you. Thanks,
>
> Kelly
>
>--
>Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
>"Democracy is a device that insures we shall be governed no better than we
> deserve." -- George Bernard Shaw
This patch fixes a bug I've noticed for the past few days.
Connecting to a FreeBSD current box via ssh2 from Win-2000 (local network)
It just started happening in the past few days.
I could connect but it would take about a minute to connect.
Now it's back instant connect with patch
Manfred
==
|| [EMAIL PROTECTED] ||
|| Ph. (415) 681-6235 ||
==
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Re: Can't resolve hosts via dns on the command line with latest -current
At Tue, 5 Nov 2002 03:12:05 +0200, Giorgos Keramidas wrote: > The curious thing is that Sendmail or ssh fail to look up hostnames, > while running host(1) works. I don't know if this is of any help, but > if you need more data about the local setup let me know. host(or dig, nslookup) doesn't use resolver in libc. The change affects processes which uses kevent(). /\ Hidetoshi Shimokawa \/ [EMAIL PROTECTED] PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest-current
On Tue, 5 Nov 2002, Giorgos Keramidas wrote:
> On 2002-11-04 18:38, Kelly Yancey <[EMAIL PROTECTED]> wrote:
> > Thanks for the info. Are you sure that you only reverted the one delta?
>
> Yes. I just recompiled the kernel from -rHEAD and started logging
> things while I connected to my dialup provider. Apparently lo0 does
> have the 127.0.0.1 address *and* the LOOPBACK flag but somehow fails.
>
> When (near the end of the following log) I back only this change out,
> the problems go away :/
>
Thanks for the great trace and your patience. I believe I found the root of
the problem. Could you please try the attached patch? I'm afraid that
if I hadn't gotten thown off this morning be my lo0 lacking a
127.0.0.1 address I probably would have found it much, much sooner
(it's pretty obvious in hindsight). At the very least, I also caught a
couple of pieces of code that are manipulating the socket buffer behind
sballoc() and sbfree()'s back so I've modified them to update the sb_cc
counter directly also.
Let me know if this fixes things for you. Thanks,
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
"Democracy is a device that insures we shall be governed no better than we
deserve." -- George Bernard Shaw
Index: kern/uipc_socket.c
===
RCS file: /home/ncvs/src/sys/kern/uipc_socket.c,v
retrieving revision 1.135
diff -u -p -r1.135 uipc_socket.c
--- kern/uipc_socket.c 2 Nov 2002 05:14:30 - 1.135
+++ kern/uipc_socket.c 5 Nov 2002 04:14:20 -
@@ -1794,7 +1794,7 @@ filt_soread(struct knote *kn, long hint)
return (1);
if (kn->kn_sfflags & NOTE_LOWAT)
return (kn->kn_data >= kn->kn_sdata);
- return (kn->kn_data >= so->so_rcv.sb_lowat);
+ return (so->so_rcv.sb_cc >= so->so_rcv.sb_lowat);
}
static void
Index: kern/uipc_socket2.c
===
RCS file: /home/ncvs/src/sys/kern/uipc_socket2.c,v
retrieving revision 1.105
diff -u -p -r1.105 uipc_socket2.c
--- kern/uipc_socket2.c 2 Nov 2002 05:14:30 - 1.105
+++ kern/uipc_socket2.c 5 Nov 2002 04:19:05 -
@@ -705,6 +705,8 @@ sbcompress(sb, m, n)
(unsigned)m->m_len);
n->m_len += m->m_len;
sb->sb_cc += m->m_len;
+ if (m->m_type != MT_DATA)
+ sb->sb_ctl += m->m_len;
m = m_free(m);
continue;
}
@@ -774,6 +776,8 @@ sbdrop(sb, len)
m->m_len -= len;
m->m_data += len;
sb->sb_cc -= len;
+ if (m->m_type != MT_DATA)
+ sb->sb_ctl -= len;
break;
}
len -= m->m_len;
Re: Can't resolve hosts via dns on the command line with latest-current
On Mon, 4 Nov 2002, David O'Brien wrote:
> On Mon, Nov 04, 2002 at 05:47:39PM -0800, Kelly Yancey wrote:
> > > A better question is why you are fixing a non-critical, over-1-year-old
> > > bug in networking code this close to the release??? Networking is our
> > > bread and butter, and changes to it can be tricky. A known non-critical
> > > bug that has existed at least since FBSD 4.2 is better than an unknown
> > > one. At this point it time, it is better to just not touch things.
> >
> > I'm not trying to fix a bug in ancient code. I'm trying to track down a
> > very specific bug that is reported to be related to a commit I made last
> > week. However, so far, I have not found how the two are related. I've just
> > been trying to keep the people who are affected by the bug in the loop while
>
> I was speaking of your commit last week to uipc_socket.c:
>
> revision 1.134
> date: 2002-11-01 21:27:59; author: kbyanc; state: Exp; lines: +1 -1
> ...
> PR: 30634
>
>
> PR 30634 is over a year old and is classified as non-critical.
>
It was important to me. I ran into the problem independently and have been
running the committed patches for 2 weeks on multiple machines. However, none
of the machines made UDP connections via lo0 so I didn't spot the bug before
commit. However, since commit I have seen 4 reports of people having trouble
resolving via localhost, 2 of which claim the backing out the commit solves
their problems. I'm actively tracking it down (as my numerous updates
throughout the day should indicate) and if I don't find the problem soon I
will revert the delta in question. This is code we use at work and I
certainly want to fix the bug if it turns out to be related to my commit.
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
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Re: Can't resolve hosts via dns on the command line with latest -current
On 2002-11-04 18:38, Kelly Yancey <[EMAIL PROTECTED]> wrote: > Thanks for the info. Are you sure that you only reverted the one delta? Yes. I just recompiled the kernel from -rHEAD and started logging things while I connected to my dialup provider. Apparently lo0 does have the 127.0.0.1 address *and* the LOOPBACK flag but somehow fails. When (near the end of the following log) I back only this change out, the problems go away :/ The strange thing is that my named listening on lo0 DOES reply, as you can see from the tcpdump output, but the reply never reaches the ssh process that initiated the query. = keramida@gray[05:05]/home/keramida$ ssh -l charon -p 666 -v labs.gr OpenSSH_3.5p1 FreeBSD-20021029, SSH protocols 1.5/2.0, OpenSSL 0x0090607f debug1: Reading configuration data /home/keramida/.ssh/config debug1: Applying options for * debug1: Reading configuration data /etc/ssh/ssh_config debug1: Rhosts Authentication disabled, originating port will not be trusted. debug1: ssh_connect: needpriv 0 ^C root@gray[05:04]/root# tcpdump -i lo0 -s 128 -v -n tcpdump: listening on lo0 05:05:34.616515 127.0.0.1.49181 > 127.0.0.1.53: [udp sum ok] 24818+ ? labs.gr. (25) (ttl 64, id 20931, len 53) 05:05:34.618115 127.0.0.1.53 > 127.0.0.1.49181: [udp sum ok] 24818 0/1/0 (66) (ttl 64, id 2744, len 94) 05:05:34.619452 127.0.0.1.49182 > 127.0.0.1.53: [udp sum ok] 24819+ A? labs.gr. (25) (ttl 64, id 63225, len 53) 05:05:34.621080 127.0.0.1.53 > 127.0.0.1.49182: 24819 1/6/6 labs.gr. A 62.103.160.6 (279) (ttl 64, id 1753, len 307) 05:05:39.621503 127.0.0.1.49183 > 127.0.0.1.53: [udp sum ok] 24819+ A? labs.gr. (25) (ttl 64, id 31195, len 53) 05:05:39.623584 127.0.0.1.53 > 127.0.0.1.49183: 24819 1/6/6 labs.gr. A 62.103.160.6 (279) (ttl 64, id 5785, len 307) 05:05:49.621965 127.0.0.1.49184 > 127.0.0.1.53: [udp sum ok] 24819+ A? labs.gr. (25) (ttl 64, id 34796, len 53) 05:05:49.624029 127.0.0.1.53 > 127.0.0.1.49184: 24819 1/6/6 labs.gr. A 62.103.160.6 (279) (ttl 64, id 60299, len 307) ^C 8 packets received by filter 0 packets dropped by kernel root@gray[05:07]/usr/src/sys/kern# cvs -qR diff -kk -u -r1.133 -r1.134 uipc_socket.c | patch -p0 -R ... root@gray[05:07]/usr/src/sys/kern# cd ../i386/conf root@gray[05:08]/usr/src/sys/i386/conf# config -g -d /usr/obj/usr/src/sys/GRAY GRAY Kernel build directory is /usr/obj/usr/src/sys/GRAY Don't forget to do a ``make depend'' root@gray[05:08]/usr/src/sys/i386/conf# cd /usr/obj/usr/src/sys/GRAY root@gray[05:08]/usr/obj/usr/src/sys/GRAY# rm uipc_socket.o root@gray[05:08]/usr/obj/usr/src/sys/GRAY# make -DNO_MODULES all && make -DNO_MODULES install [ reboot after backout ] keramida@gray[05:12]/home/keramida$ ssh -l charon -p 666 -v labs.gr OpenSSH_3.5p1 FreeBSD-20021029, SSH protocols 1.5/2.0, OpenSSL 0x0090607f debug1: Reading configuration data /home/keramida/.ssh/config debug1: Applying options for * debug1: Reading configuration data /etc/ssh/ssh_config debug1: Rhosts Authentication disabled, originating port will not be trusted. debug1: ssh_connect: needpriv 0 debug1: Connecting to labs.gr [62.103.160.6] port 666. debug1: Connection established. ... [ and it works ] = To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest -current
On Mon, Nov 04, 2002 at 05:47:39PM -0800, Kelly Yancey wrote: > > A better question is why you are fixing a non-critical, over-1-year-old > > bug in networking code this close to the release??? Networking is our > > bread and butter, and changes to it can be tricky. A known non-critical > > bug that has existed at least since FBSD 4.2 is better than an unknown > > one. At this point it time, it is better to just not touch things. > > I'm not trying to fix a bug in ancient code. I'm trying to track down a > very specific bug that is reported to be related to a commit I made last > week. However, so far, I have not found how the two are related. I've just > been trying to keep the people who are affected by the bug in the loop while I was speaking of your commit last week to uipc_socket.c: revision 1.134 date: 2002-11-01 21:27:59; author: kbyanc; state: Exp; lines: +1 -1 ... PR: 30634 PR 30634 is over a year old and is classified as non-critical. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest-current
On Tue, 5 Nov 2002, Giorgos Keramidas wrote:
> On 2002-11-04 10:45, Kelly Yancey <[EMAIL PROTECTED]> wrote:
> > On Mon, 4 Nov 2002, Giorgos Keramidas wrote:
> > > True. I had been seeing problems with network connections the last
> > > days, and was already in the process of backing out changes one by one
> > > when I saw this. Reverting 1.134 fixes things here. If I put it back
> > > in, strange DNS failures start causing troubles with almost everything
> > > (including Sendmail, fetchmail, ssh).
> >
> > I've had this running on multiple machines for weeks without
> > problems. What is your resolve.conf and nsswitch.conf? Curious,
>
> I am running a local named that listens on { 127.0.0.1; }.
>
> My nsswitch.conf contains:
>
> hosts: files dns
>
> and resolv.conf is:
>
> search sea.gr freebsd.org irc.gr ceid.upatras.gr
> nameserver 127.0.0.1
>
> The curious thing is that Sendmail or ssh fail to look up hostnames,
> while running host(1) works. I don't know if this is of any help, but
> if you need more data about the local setup let me know.
>
> Thanks for looking into this,
> Giorgos.
>
Thanks for the info. Are you sure that you only reverted the one delta?
Oddly, when I do the same I still have trouble resolving via localhost (i.e.
with or without revision 1.134). I can only get DNS via localhost working
again by explicitely adding 127.0.0.1 to lo0.
If anything I suspect that something is preventing 127.0.0.1 from being
assigned to lo0 at boot (maybe my commit, but I don't see how). But again,
I'm still looking into it. :|
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
Visit the BSD driver database: http://www.posi.net/freebsd/drivers/
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Re: Can't resolve hosts via dns on the command line with latest-current
On Mon, 4 Nov 2002, David O'Brien wrote:
> On Mon, Nov 04, 2002 at 10:45:42AM -0800, Kelly Yancey wrote:
> > On Mon, 4 Nov 2002, Giorgos Keramidas wrote:
> >
> > > On 2002-11-04 01:16, Hidetoshi Shimokawa <[EMAIL PROTECTED]> wrote:
> > > > I have the same problem and reverting rev. 1.134 of
> > > > /sys/kern/uipc_socket.c fixes the problem.
> > > > The change might have something wrong with a loopback interface.
> ...
> > I've had this running on multiple machines for weeks without problems. What
> > is your resolve.conf and nsswitch.conf? Curious,
>
> A better question is why you are fixing a non-critical, over-1-year-old
> bug in networking code this close to the release??? Networking is our
> bread and butter, and changes to it can be tricky. A known non-critical
> bug that has existed at least since FBSD 4.2 is better than an unknown
> one. At this point it time, it is better to just not touch things.
>
I'm not trying to fix a bug in ancient code. I'm trying to track down a
very specific bug that is reported to be related to a commit I made last
week. However, so far, I have not found how the two are related. I've just
been trying to keep the people who are affected by the bug in the loop while
I'm tracking it down.
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
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Re: Can't resolve hosts via dns on the command line with latest-current
On Mon, 4 Nov 2002, Terry Lambert wrote:
> Kelly Yancey wrote:
> > It doesn't matter. It isn't just DNS lookups, mountd fails to run too
> > because it cannot connect to portmap via localhost. Oddly, in both cases
> > sendto() is returning with errno = 49 (EADDRNOTAVAIL). I've tracked it down
> > to this code in sys/netinet/ip_output.c:
> >
> > /* 127/8 must not appear on wire - RFC1122. */
> > if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
> > (ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) {
> > if ((ifp->if_flags & IFF_LOOPBACK) == 0) {
> > ipstat.ips_badaddr++;
> > error = EADDRNOTAVAIL;
> > goto bad;
> > }
> > }
> >
> > Which was last modified in revision 1.150 back in February. However, I
> > still don't see how adding an extra counter to the sockbuf could possibly
> > change the set of events required to get to this code, but it is certainly
> > what is causing EADDRNOTAVAIL to be returned. Needless to say, I'm still
> > researching it.
>
> Pretty clear, I should think:
>
> IF the source address is a loopback address
> OR the destination address is a loopback address
> THEN
> IF the interface does not have the IFF_LOOBACK flag
> return EADDRNOTAVAIL
>
> ...pretty clearly, the new loopback interface doe not set the flag
> IFF_LOOPBACK on the interface, as it is supposed to do.
>
> -- Terry
>
No, it turns out I'm an idiot: somehow the address on loopback got deleted
so it was trying to use my default route. So I was on a wild goose chase. :|
Oddly enough, though, once I re-added 127.0.0.1/8 to my localhost:
# cat resolv.conf
search nttmcl.com
nameserver 127.0.0.1
# ps auwwwx | grep named
root 320 0.0 0.8 2600 2160 ?? Is5:11PM 0:00.03 named
# ping www.freebsd.org
PING www.freebsd.org (216.136.204.117): 56 data bytes
64 bytes from 216.136.204.117: icmp_seq=0 ttl=50 time=16.343 ms
64 bytes from 216.136.204.117: icmp_seq=1 ttl=50 time=8.764 ms
^C
--- www.freebsd.org ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/stddev = 8.764/12.553/16.343/3.789 ms
# ping www.yahoo.com
Go figure. I've said it before and I'll say it again...I'm working on it.
:|
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
"Though [the people] may acquiesce, they cannot approve what they do not
understand." --Thomas Jefferson, 1792.
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Re: Can't resolve hosts via dns on the command line with latest -current
On 2002-11-04 10:45, Kelly Yancey <[EMAIL PROTECTED]> wrote:
> On Mon, 4 Nov 2002, Giorgos Keramidas wrote:
> > True. I had been seeing problems with network connections the last
> > days, and was already in the process of backing out changes one by one
> > when I saw this. Reverting 1.134 fixes things here. If I put it back
> > in, strange DNS failures start causing troubles with almost everything
> > (including Sendmail, fetchmail, ssh).
>
> I've had this running on multiple machines for weeks without
> problems. What is your resolve.conf and nsswitch.conf? Curious,
I am running a local named that listens on { 127.0.0.1; }.
My nsswitch.conf contains:
hosts: files dns
and resolv.conf is:
search sea.gr freebsd.org irc.gr ceid.upatras.gr
nameserver 127.0.0.1
The curious thing is that Sendmail or ssh fail to look up hostnames,
while running host(1) works. I don't know if this is of any help, but
if you need more data about the local setup let me know.
Thanks for looking into this,
Giorgos.
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Re: Can't resolve hosts via dns on the command line with latest -current
On Mon, Nov 04, 2002 at 10:45:42AM -0800, Kelly Yancey wrote: > On Mon, 4 Nov 2002, Giorgos Keramidas wrote: > > > On 2002-11-04 01:16, Hidetoshi Shimokawa <[EMAIL PROTECTED]> wrote: > > > I have the same problem and reverting rev. 1.134 of > > > /sys/kern/uipc_socket.c fixes the problem. > > > The change might have something wrong with a loopback interface. ... > I've had this running on multiple machines for weeks without problems. What > is your resolve.conf and nsswitch.conf? Curious, A better question is why you are fixing a non-critical, over-1-year-old bug in networking code this close to the release??? Networking is our bread and butter, and changes to it can be tricky. A known non-critical bug that has existed at least since FBSD 4.2 is better than an unknown one. At this point it time, it is better to just not touch things. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest-current
Kelly Yancey wrote:
> It doesn't matter. It isn't just DNS lookups, mountd fails to run too
> because it cannot connect to portmap via localhost. Oddly, in both cases
> sendto() is returning with errno = 49 (EADDRNOTAVAIL). I've tracked it down
> to this code in sys/netinet/ip_output.c:
>
> /* 127/8 must not appear on wire - RFC1122. */
> if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
> (ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) {
> if ((ifp->if_flags & IFF_LOOPBACK) == 0) {
> ipstat.ips_badaddr++;
> error = EADDRNOTAVAIL;
> goto bad;
> }
> }
>
> Which was last modified in revision 1.150 back in February. However, I
> still don't see how adding an extra counter to the sockbuf could possibly
> change the set of events required to get to this code, but it is certainly
> what is causing EADDRNOTAVAIL to be returned. Needless to say, I'm still
> researching it.
Pretty clear, I should think:
IF the source address is a loopback address
OR the destination address is a loopback address
THEN
IF the interface does not have the IFF_LOOBACK flag
return EADDRNOTAVAIL
...pretty clearly, the new loopback interface doe not set the flag
IFF_LOOPBACK on the interface, as it is supposed to do.
-- Terry
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Re: Can't resolve hosts via dns on the command line with latest-current
On Mon, 4 Nov 2002, Terry Lambert wrote:
> Kelly Yancey wrote:
> > I suspect something in lib/libc/net/res_send.c is using special knowledge of
> > the contents of the socket buffer so calculate the real amount of data that
> > can be read (which this patch does automatically). I'm looking into it.
>
> ...To ensure that the read does not block, and is not issued
> until sufficient data exists.
>
> -- Terry
>
It doesn't matter. It isn't just DNS lookups, mountd fails to run too
because it cannot connect to portmap via localhost. Oddly, in both cases
sendto() is returning with errno = 49 (EADDRNOTAVAIL). I've tracked it down
to this code in sys/netinet/ip_output.c:
/* 127/8 must not appear on wire - RFC1122. */
if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
(ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) {
if ((ifp->if_flags & IFF_LOOPBACK) == 0) {
ipstat.ips_badaddr++;
error = EADDRNOTAVAIL;
goto bad;
}
}
Which was last modified in revision 1.150 back in February. However, I
still don't see how adding an extra counter to the sockbuf could possibly
change the set of events required to get to this code, but it is certainly
what is causing EADDRNOTAVAIL to be returned. Needless to say, I'm still
researching it.
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
FreeBSD, The Power To Serve: http://www.freebsd.org/
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Re: Can't resolve hosts via dns on the command line with latest-current
Kelly Yancey wrote: > I suspect something in lib/libc/net/res_send.c is using special knowledge of > the contents of the socket buffer so calculate the real amount of data that > can be read (which this patch does automatically). I'm looking into it. ...To ensure that the read does not block, and is not issued until sufficient data exists. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest-current
On Sun, 3 Nov 2002, Doug Barton wrote:
> On Mon, 4 Nov 2002, Hidetoshi Shimokawa wrote:
>
> > I have the same problem and reverting rev. 1.134 of
> > /sys/kern/uipc_socket.c fixes the problem.
>
> Confirmed here too, thanks for the tip. I had looked over the recent
> commits to /etc/lib/*, but none of them looked guilty.
>
> Doug
>
>
Ah, I'm able to recreate the problem now. It is odd that it only occurs on
loopback, but it doesn't appear specific to DNS. :| I'm on it. Thanks,
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
FreeBSD, The Power To Serve: http://www.freebsd.org/
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Re: Can't resolve hosts via dns on the command line with latest-current
On Mon, 4 Nov 2002, Hidetoshi Shimokawa wrote:
> I have the same problem and reverting rev. 1.134 of
> /sys/kern/uipc_socket.c fixes the problem.
> The change might have something wrong with a loopback interface.
>
> /\ Hidetoshi Shimokawa
> \/ [EMAIL PROTECTED]
> PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html
>
> Index: uipc_socket.c
> ===
> RCS file: /home/ncvs/src/sys/kern/uipc_socket.c,v
> retrieving revision 1.135
> diff -u -r1.135 uipc_socket.c
> --- uipc_socket.c 2 Nov 2002 05:14:30 - 1.135
> +++ uipc_socket.c 3 Nov 2002 14:45:16 -
> @@ -1784,7 +1784,11 @@
> {
> struct socket *so = (struct socket *)kn->kn_fp->f_data;
>
> +#if 0
> kn->kn_data = so->so_rcv.sb_cc - so->so_rcv.sb_ctl;
> +#else
> + kn->kn_data = so->so_rcv.sb_cc;
> +#endif
> if (so->so_state & SS_CANTRCVMORE) {
> kn->kn_flags |= EV_EOF;
> kn->kn_fflags = so->so_error;
>
I suspect something in lib/libc/net/res_send.c is using special knowledge of
the contents of the socket buffer so calculate the real amount of data that
can be read (which this patch does automatically). I'm looking into it.
>
> At Sun, 03 Nov 2002 05:39:48 -0800,
> Doug Barton wrote:
> >
> > Howdy,
> >
> > With -current built from sources updated at around 8pm PST, I can't
> > resolve hosts on the command line if /etc/resolv.conf points to a name
> > server running on the local host. The local name server itself is
> > working fine, and I can reach any host in /etc/hosts as well.
> >
> > ktrace /sbin/ping hub.freebsd.org
> > ^C
> >
> > kdump
> >651 ktrace RET ktrace 0
> >651 ktrace CALL execve(0xbfbffb03,0xbfbff9e4,0xbfbff9f0)
> >651 ktrace NAMI "/sbin/ping"
> >
What is this supposed to demonstrate?
> > /etc/nsswitch.conf is unchanged, and contains only:
> > hosts: files dns
> >
> > It doesn't matter if /etc/resolv.conf points to 127.0.0.1, or the IP of
> > the box. As soon as I point /etc/resolv.conf at a name server on another
> > host, it works.
> >
> > My -current system from last weekend worked just fine.
> >
> > Doug
> >
Thanks. I'll let you know what I find,
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
FreeBSD, The Power To Serve: http://www.freebsd.org/
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Re: Can't resolve hosts via dns on the command line with latest-current
On Mon, 4 Nov 2002, Giorgos Keramidas wrote:
> On 2002-11-04 01:16, Hidetoshi Shimokawa <[EMAIL PROTECTED]> wrote:
> > I have the same problem and reverting rev. 1.134 of
> > /sys/kern/uipc_socket.c fixes the problem.
> > The change might have something wrong with a loopback interface.
>
> True. I had been seeing problems with network connections the last
> days, and was already in the process of backing out changes one by one
> when I saw this. Reverting 1.134 fixes things here. If I put it back
> in, strange DNS failures start causing troubles with almost everything
> (including Sendmail, fetchmail, ssh).
>
> Giorgos.
>
I've had this running on multiple machines for weeks without problems. What
is your resolve.conf and nsswitch.conf? Curious,
Kelly
--
Kelly Yancey -- kbyanc@{posi.net,FreeBSD.org}
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Re: Can't resolve hosts via dns on the command line with latest-current
On Mon, 4 Nov 2002, Hidetoshi Shimokawa wrote: > I have the same problem and reverting rev. 1.134 of > /sys/kern/uipc_socket.c fixes the problem. Confirmed here too, thanks for the tip. I had looked over the recent commits to /etc/lib/*, but none of them looked guilty. Doug To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest -current
On 2002-11-04 01:16, Hidetoshi Shimokawa <[EMAIL PROTECTED]> wrote: > I have the same problem and reverting rev. 1.134 of > /sys/kern/uipc_socket.c fixes the problem. > The change might have something wrong with a loopback interface. True. I had been seeing problems with network connections the last days, and was already in the process of backing out changes one by one when I saw this. Reverting 1.134 fixes things here. If I put it back in, strange DNS failures start causing troubles with almost everything (including Sendmail, fetchmail, ssh). Giorgos. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest -current
Doug Barton wrote: > Howdy, > > With -current built from sources updated at around 8pm PST, I can't > resolve hosts on the command line if /etc/resolv.conf points to a name > server running on the local host. The local name server itself is > working fine, and I can reach any host in /etc/hosts as well. > > ktrace /sbin/ping hub.freebsd.org > ^C > > kdump >651 ktrace RET ktrace 0 >651 ktrace CALL execve(0xbfbffb03,0xbfbff9e4,0xbfbff9f0) >651 ktrace NAMI "/sbin/ping" > > /etc/nsswitch.conf is unchanged, and contains only: > hosts: files dns > > It doesn't matter if /etc/resolv.conf points to 127.0.0.1, or the IP of > the box. As soon as I point /etc/resolv.conf at a name server on another > host, it works. I'm having similar problems. If I have 2 or 3 nameservers listed and 127.0.0.1 first, then I get a 10-20 second timeout before the resolver library switches to another server. Cheers, -Peter -- Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: Can't resolve hosts via dns on the command line with latest -current
I have the same problem and reverting rev. 1.134 of
/sys/kern/uipc_socket.c fixes the problem.
The change might have something wrong with a loopback interface.
/\ Hidetoshi Shimokawa
\/ [EMAIL PROTECTED]
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html
Index: uipc_socket.c
===
RCS file: /home/ncvs/src/sys/kern/uipc_socket.c,v
retrieving revision 1.135
diff -u -r1.135 uipc_socket.c
--- uipc_socket.c 2 Nov 2002 05:14:30 - 1.135
+++ uipc_socket.c 3 Nov 2002 14:45:16 -
@@ -1784,7 +1784,11 @@
{
struct socket *so = (struct socket *)kn->kn_fp->f_data;
+#if 0
kn->kn_data = so->so_rcv.sb_cc - so->so_rcv.sb_ctl;
+#else
+ kn->kn_data = so->so_rcv.sb_cc;
+#endif
if (so->so_state & SS_CANTRCVMORE) {
kn->kn_flags |= EV_EOF;
kn->kn_fflags = so->so_error;
At Sun, 03 Nov 2002 05:39:48 -0800,
Doug Barton wrote:
>
> Howdy,
>
> With -current built from sources updated at around 8pm PST, I can't
> resolve hosts on the command line if /etc/resolv.conf points to a name
> server running on the local host. The local name server itself is
> working fine, and I can reach any host in /etc/hosts as well.
>
> ktrace /sbin/ping hub.freebsd.org
> ^C
>
> kdump
>651 ktrace RET ktrace 0
>651 ktrace CALL execve(0xbfbffb03,0xbfbff9e4,0xbfbff9f0)
>651 ktrace NAMI "/sbin/ping"
>
> /etc/nsswitch.conf is unchanged, and contains only:
> hosts: files dns
>
> It doesn't matter if /etc/resolv.conf points to 127.0.0.1, or the IP of
> the box. As soon as I point /etc/resolv.conf at a name server on another
> host, it works.
>
> My -current system from last weekend worked just fine.
>
> Doug
>
> --
>"We have known freedom's price. We have shown freedom's power.
> And in this great conflict, ... we will see freedom's victory."
> - George W. Bush, President of the United States
> State of the Union, January 28, 2002
>
> Do YOU Yahoo!?
>
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>
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