[uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
Hi all, I am trying to integrate 2.6.x support to debian and I encountered a blocking issue on networking configuration. If you use the 2.4.x uml kernel the UML image work fine with network, but if you use an available 2.6.x uml image or a 2.6.x image of mine the uml bootstrap phase hangs with the following error message: Setting up networking...done. * /etc/network/options is deprecated. Setting up IP spoofing protection...done (rp_filter). Configuring network interfaces...execvp of 'uml_net' failed - errno = 2 From previous messages I read that this concerns uml_net and its permissions. Do you have an idea how to work around this issue? I also need it to apply to the future debian uml support. Thank you in advance Cheers SteX -- Stefano Melchior, GPG key = D52DF829 - <[EMAIL PROTECTED]> http://etinarcadiaego.dyndns.org-- http://www.stex.name signature.asc Description: Digital signature
Re: [uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
On Friday 17 February 2006 12:51, Stefano Melchior wrote:
> Hi all,
> I am trying to integrate 2.6.x support to debian and I encountered a
> blocking issue on networking configuration.
> If you use the 2.4.x uml kernel the UML image work fine with network, but
> if you use an available 2.6.x uml image or a 2.6.x image of mine the uml
> bootstrap phase hangs with the following error message:
Indeed on the same machine and with same config? It's strange, I never saw
this incompatibility, and I can't find bugs in the code able to produce this
(with a quick look). Could you check on your part?
> Setting up networking...done.
> * /etc/network/options is deprecated.
> Setting up IP spoofing protection...done (rp_filter).
> Configuring network interfaces...execvp of 'uml_net' failed - errno = 2
> From previous messages I read that this concerns uml_net and its
> permissions.
Which are them? It should be setuid root and executable...
However, since:
# perror 2
OS error code 2: No such file or directory
Uml is saying it didn't find uml_net, or some of its libraries, not that
there's a permission problem.
Possibly it's lying and printing the wrong code, dunno. But from current code:
arch/um/os-Linux/helper.c:helper_child
execvp(argv[0], argv);
errval = errno;
printk("execvp of '%s' failed - errno = %d\n", argv[0], errno);
it seems not (that source file was somewhere else, guess in arch/um/kernel,
until 2.6.14, but I think the content was the same).
> Do you have an idea how to work around this issue?
> I also need it to apply to the future debian uml support.
> Thank you in advance
> Cheers
> SteX
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Re: [uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
On Fri, Feb 17, 2006 at 01:07:50PM +0100, Blaisorblade wrote:
Hi Paolo,
> > If you use the 2.4.x uml kernel the UML image work fine with network, but
> > if you use an available 2.6.x uml image or a 2.6.x image of mine the uml
> > bootstrap phase hangs with the following error message:
>
> Indeed on the same machine and with same config? It's strange, I never saw
yes, first I tried my own configuration, then I downloaded a prebuild uml
kernel from http://uml.nagafix.co.uk/ and I tried with this one. Same
error again.
Then I extracted the configuration from that image and I rebuild with that
config, same error for the same problem.
> this incompatibility, and I can't find bugs in the code able to produce this
> (with a quick look). Could you check on your part?
>
> > Setting up networking...done.
> > * /etc/network/options is deprecated.
> > Setting up IP spoofing protection...done (rp_filter).
> > Configuring network interfaces...execvp of 'uml_net' failed - errno = 2
>
> > From previous messages I read that this concerns uml_net and its
> > permissions.
>
> Which are them? It should be setuid root and executable...
[EMAIL PROTECTED] ll /usr/lib/uml/uml_net
-rwsr-x--- 1 root uml-net 19836 2004-04-15 03:03 /usr/lib/uml/uml_net
my user, ste, is in the uml-net group.
>
> However, since:
>
> # perror 2
> OS error code 2: No such file or directory
it sounds strange, isn't it?
>
> Uml is saying it didn't find uml_net, or some of its libraries, not that
> there's a permission problem.
>
> Possibly it's lying and printing the wrong code, dunno. But from current code:
>
> arch/um/os-Linux/helper.c:helper_child
> execvp(argv[0], argv);
> errval = errno;
> printk("execvp of '%s' failed - errno = %d\n", argv[0], errno);
>
> it seems not (that source file was somewhere else, guess in arch/um/kernel,
> until 2.6.14, but I think the content was the same).
>
It was displayed in case of my test on 2.6.15, but it occurred even with
other kernels, such as 2.6.12 and 2.6.14.
Indeed with all 2.6.x kernels, it is the strangest thing. With 2.4.x it
works perfectly.
Another info: I used either the kernel.org sources and the debian's
linux-source(s).
I am going to investigate futher more
SteX
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Re: [uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
On Friday 17 February 2006 14:47, Stefano Melchior wrote: > On Fri, Feb 17, 2006 at 01:07:50PM +0100, Blaisorblade wrote: > Hi Paolo, > > > > If you use the 2.4.x uml kernel the UML image work fine with network, > > > but if you use an available 2.6.x uml image or a 2.6.x image of mine > > > the uml bootstrap phase hangs with the following error message: > > > > Indeed on the same machine and with same config? It's strange, I never > > saw > yes, first I tried my own configuration, then I downloaded a prebuild uml > kernel from http://uml.nagafix.co.uk/ and I tried with this one. Same > error again. > Then I extracted the configuration from that image and I rebuild with that > config, same error for the same problem. > [EMAIL PROTECTED] ll /usr/lib/uml/uml_net > -rwsr-x--- 1 root uml-net 19836 2004-04-15 03:03 /usr/lib/uml/uml_net Ok, thanks for this informative info. This is the solution. In short, echo $PATH | grep /usr/lib/uml, and if needed man 3 execvp, could enlighten you... or even the fact that I do: # ls -l /usr/bin/uml_net -rws--x--x 1 root root 22856 16 feb 18:49 /usr/bin/uml_net if you want the full story, instead, IOW: Debian has his own very non-standard packaging for uml_utilities, and patches UML to cope with it. For instance, uml_switch has different defaults on UML (the socket goes into /var/run instead of /tmp, in UML). And (but this is the first time I hear this) you have uml_net in /usr/lib/uml rather than /usr/bin. Which would be a better choice, btw... but isn't implemented in mainline (we maybe should). > Another info: I used either the kernel.org sources and the debian's > linux-source(s). But you're using a vanilla UML without the forward ports of all 2.4 patches (you're using linux-source(s), not a possible uml-linux-source(s)). For the future packaging: I do believe that Debian's defaults have been actually planned while uml_utilities haven't, so I like the idea of switching to Debian paths as defaults, and possibly using the current ones as fallbacks. -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___ Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive http://it.messenger.yahoo.com --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
On Fri, Feb 17, 2006 at 03:05:28PM +0100, Blaisorblade wrote: Ciao Paolo, > > yes, first I tried my own configuration, then I downloaded a prebuild uml > > kernel from http://uml.nagafix.co.uk/ and I tried with this one. Same > > error again. > > Then I extracted the configuration from that image and I rebuild with that > > config, same error for the same problem. > > > [EMAIL PROTECTED] ll /usr/lib/uml/uml_net > > -rwsr-x--- 1 root uml-net 19836 2004-04-15 03:03 /usr/lib/uml/uml_net > > Ok, thanks for this informative info. This is the solution. > > In short, echo $PATH | grep /usr/lib/uml, and if needed man 3 execvp, could > enlighten you... or even the fact that I do: > > # ls -l /usr/bin/uml_net > -rws--x--x 1 root root 22856 16 feb 18:49 /usr/bin/uml_net damn, it drived me crazy!!! now it works, and I am going to provide the solution in debian. What it sounds strange is that: [EMAIL PROTECTED] ll /usr/bin/uml* -rwxr-xr-x 1 root root 10296 2006-02-17 03:39 /usr/bin/uml_mconsole -rwxr-xr-x 1 root root 9784 2006-02-17 03:39 /usr/bin/uml_mkcow -rwxr-xr-x 1 root root 12356 2006-02-17 03:39 /usr/bin/uml_moo lrwxrwxrwx 1 root root20 2006-02-17 12:13 /usr/bin/uml_net -> /usr/lib/uml/uml_net -rwxr-xr-x 1 root root 15624 2006-02-17 03:39 /usr/bin/uml_switch -rwxr-xr-x 1 root root 4168 2006-02-17 03:39 /usr/bin/uml_watchdog (I temporarily linked uml_net from the current position) all the other uml_* files resides on /usr/bin. I am going to fix this. Thanks Paolo for your usual good suggestions :)) Cheers SteX -- Stefano Melchior, GPG key = D52DF829 - <[EMAIL PROTECTED]> http://etinarcadiaego.dyndns.org-- http://www.stex.name signature.asc Description: Digital signature
Re: [uml-user] Re: [uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
On Fri, Feb 17, 2006 at 03:05:28PM +0100, Blaisorblade wrote: > For the future packaging: I do believe that Debian's defaults have been > actually planned while uml_utilities haven't, so I like the idea of switching > to Debian paths as defaults, and possibly using the current ones as > fallbacks. Yup, as long as they are not too Debian-specific. Jeff --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
[uml-devel] Re: 2.6.16-rc2 x86_64; Jeff's uml patch tar doesn't apply
On Fri, Feb 17, 2006 at 12:19:07AM -0500, William Stearns wrote: > The uml patch tar file at > http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.16-rc2/patches.tar > > should apply to 2.6.16-rc2, but when I try to apply it I get: I just tried that - made a rc2 tree grabbed my current tarball from the UML site applied it I got a couple of offsets (which shouldn't have been there), but it applied and is currently building OK. I submit to you that perhaps your tree is not quite the cleanest 2.6.15-rc2 :-) Jeff --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
[uml-devel] Re: 2.6.16-rc2 x86_64; Jeff's uml patch tar doesn't apply
Good afternoon, Jeff, On Fri, 17 Feb 2006, Jeff Dike wrote: On Fri, Feb 17, 2006 at 12:19:07AM -0500, William Stearns wrote: The uml patch tar file at http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.16-rc2/patches.tar should apply to 2.6.16-rc2, but when I try to apply it I get: I just tried that - made a rc2 tree grabbed my current tarball from the UML site applied it I got a couple of offsets (which shouldn't have been there), but it applied and is currently building OK. I submit to you that perhaps your tree is not quite the cleanest 2.6.15-rc2 :-) Ummm, 2.6._16_-rc2, I expect you meant. I opened up the linux-2.6.16-rc2.tar.bz2 direct from ftp.kernel.org, used apply-quit-patches ( http://www.stearns.org/apply-quilt-patches/apply-quilt-patches ) from the patches directory, and got those errors. I'm really tied up today with a drive problem, but I'll try again tonight. Cheers, - Bill --- ..all in all it's just another rule in the firewall. /Ping Flood/ (Courtesy of Hirling Endre) -- William Stearns ([EMAIL PROTECTED]). Mason, Buildkernel, freedups, p0f, rsync-backup, ssh-keyinstall, dns-check, more at: http://www.stearns.org -- --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-user] Re: [uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
On Friday 17 February 2006 16:44, Jeff Dike wrote: > On Fri, Feb 17, 2006 at 03:05:28PM +0100, Blaisorblade wrote: > > For the future packaging: I do believe that Debian's defaults have been > > actually planned while uml_utilities haven't, so I like the idea of > > switching to Debian paths as defaults, and possibly using the current > > ones as fallbacks. > > Yup, as long as they are not too Debian-specific. They tend to make more sense and adhere better to the FHS. /var/run/uml-utilities requires support from the distro, but having uml_net in /usr/lib is a correct idea, for instance. -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___ Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive http://it.messenger.yahoo.com --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] "Configuring network interfaces...execvp of 'uml_net' failed - errno = 2" error msg
On Friday 17 February 2006 15:29, Stefano Melchior wrote: > On Fri, Feb 17, 2006 at 03:05:28PM +0100, Blaisorblade wrote: > Ciao Paolo, > > > # ls -l /usr/bin/uml_net > > -rws--x--x 1 root root 22856 16 feb 18:49 /usr/bin/uml_net > > damn, it drived me crazy!!! Yep, we found the thing by accident - I would never have asked "where is uml_net?" > now it works, and I am going to provide the > solution in debian. > What it sounds strange is that: Indeed it's correct as long as you support actively UML - the user never runs uml_net so it should be under /usr/lib. However, if the uml_utilities package provides both locations it's better for people rolling their own kernels (i.e. everyone on Debian, for now). Btw, I've just released a new uml_utilities version - see my homepage. > [EMAIL PROTECTED] ll /usr/bin/uml* > -rwxr-xr-x 1 root root 10296 2006-02-17 03:39 /usr/bin/uml_mconsole > -rwxr-xr-x 1 root root 9784 2006-02-17 03:39 /usr/bin/uml_mkcow > -rwxr-xr-x 1 root root 12356 2006-02-17 03:39 /usr/bin/uml_moo > lrwxrwxrwx 1 root root20 2006-02-17 12:13 /usr/bin/uml_net -> > /usr/lib/uml/uml_net > -rwxr-xr-x 1 root root 15624 2006-02-17 03:39 /usr/bin/uml_switch > -rwxr-xr-x 1 root root 4168 2006-02-17 03:39 /usr/bin/uml_watchdog > > (I temporarily linked uml_net from the current position) > all the other uml_* files resides on /usr/bin. > I am going to fix this. > > Thanks Paolo for your usual good suggestions :)) -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___ Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive http://it.messenger.yahoo.com --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
[uml-devel] Re: 2.6.16-rc2 x86_64; Jeff's uml patch tar doesn't apply
On Fri, Feb 17, 2006 at 12:29:58PM -0500, William Stearns wrote: > >I submit to you that perhaps your tree is not quite the cleanest > >2.6.15-rc2 :-) > > Ummm, 2.6._16_-rc2, I expect you meant. Correct, but that was still a true statement :-) > I opened up the linux-2.6.16-rc2.tar.bz2 direct from > ftp.kernel.org, used apply-quit-patches > ( http://www.stearns.org/apply-quilt-patches/apply-quilt-patches ) from > the patches directory, and got those errors. Well, you show me yours and I'll show you mine. Here's mine... ~/linux/2.6/test 7876: wget http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.16-rc2.tar.bz2 --15:08:27-- http://www.kernel.org/pub/linux/kernel/v2.6/testing/linux-2.6.16-rc2.tar.bz2 => `linux-2.6.16-rc2.tar.bz2' Resolving www.kernel.org... 204.152.191.5, 204.152.191.37 Connecting to www.kernel.org|204.152.191.5|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 40,817,609 (39M) [application/x-bzip2] 100%[>] 40,817,609 627.97K/sETA 00:00 15:09:33 (610.73 KB/s) - `linux-2.6.16-rc2.tar.bz2' saved [40817609/40817609] ~/linux/2.6/test 7877: wget http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.16-rc2/patches.tar --15:09:36-- http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.16-rc2/patches.tar => `patches.tar' Resolving user-mode-linux.sourceforge.net... 66.35.250.209 Connecting to user-mode-linux.sourceforge.net|66.35.250.209|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 737,280 (720K) [application/x-tar] 100%[>] 737,2808.01K/sETA 00:00 15:10:21 (16.05 KB/s) - `patches.tar' saved [737280/737280] ~/linux/2.6/test 7880: bzcat linux-2.6.16-rc2.tar.bz2 | tar xf - ~/linux/2.6/test 7881: cd linux-2.6.16-rc2/ ~/linux/2.6/test/linux-2.6.16-rc2 7882: tar xf ../patches.tar ~/linux/2.6/test/linux-2.6.16-rc2 7883: mv patches/ x ~/linux/2.6/test/linux-2.6.16-rc2 7884: quilt setup /dev/null ~/linux/2.6/test/linux-2.6.16-rc2 7885: export dir=x; for p in `cat $dir/series`; do [ ! -f $dir/$p ] && continue; quilt import $dir/$p; quilt push || break; done Importing patch x/uaccess-warning (stored as patches/uaccess-warning) Applying patch patches/uaccess-warning patching file arch/um/include/skas/uaccess-skas.h patching file arch/um/include/tt/uaccess-tt.h patching file arch/um/include/um_uaccess.h patching file arch/um/kernel/skas/uaccess.c patching file arch/um/kernel/tt/uaccess.c patching file include/asm-um/uaccess.h ... With lots of happiness following, except for the aforementioned offsets. Jeff --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] Error messages booting 2.6.16-pre3
On Wed, Feb 15, 2006 at 05:13:52PM -0500, Rob Landley wrote: > > parse_chan_pair failed for device 1 > > parse_chan_pair failed for device 2 > > parse_chan_pair failed for device 3 > > parse_chan_pair failed for device 4 > > parse_chan_pair failed for device 5 > > parse_chan_pair failed for device 6 > > parse_chan_pair failed for device 7 > > parse_chan_pair failed for device 8 > > parse_chan_pair failed for device 9 > > parse_chan_pair failed for device 10 > > parse_chan_pair failed for device 11 > > parse_chan_pair failed for device 12 > > parse_chan_pair failed for device 13 > > parse_chan_pair failed for device 14 > > parse_chan_pair failed for device 15 I don't know about the rest of this, but something like this just happened to me. It was attaching the consoles to a host portal which another UML was already using. I got semi-reasonable "that portal is already in use" errors in between the parse_chan_pair things. So, were you trying to reuse some host devices, and which ones? An improvement in the errors might be in order here. Jeff --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
Re: [uml-devel] Error messages booting 2.6.16-pre3
On Friday 17 February 2006 3:29 pm, Jeff Dike wrote: > On Wed, Feb 15, 2006 at 05:13:52PM -0500, Rob Landley wrote: > > > parse_chan_pair failed for device 1 > > > parse_chan_pair failed for device 2 > > > parse_chan_pair failed for device 3 > > > parse_chan_pair failed for device 4 > > > parse_chan_pair failed for device 5 > > > parse_chan_pair failed for device 6 > > > parse_chan_pair failed for device 7 > > > parse_chan_pair failed for device 8 > > > parse_chan_pair failed for device 9 > > > parse_chan_pair failed for device 10 > > > parse_chan_pair failed for device 11 > > > parse_chan_pair failed for device 12 > > > parse_chan_pair failed for device 13 > > > parse_chan_pair failed for device 14 > > > parse_chan_pair failed for device 15 > > I don't know about the rest of this, but something like this just > happened to me. It was attaching the consoles to a host portal which > another UML was already using. I got semi-reasonable "that portal is > already in use" errors in between the parse_chan_pair things. > > So, were you trying to reuse some host devices, and which ones? An > improvement in the errors might be in order here. I don't know. The did my standard "rootfstype=hostfs rw init=/bin/sh" thing, which should only have on process (a shell) on /dev/console. All that happened before that even managed to run /bin/sh. I don't think I had any other type of console support even built into the thing. (Console on stderr support, everything else disabled.) No idea what devices it was talking about... > Jeff Rob -- Never bet against the cheap plastic solution. --- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 ___ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
