Could someone maybe explain this ?
(top output, but same load is given with 'uptime')
there is no cpu or disk activity
kernel is 2.2.18pre9 on sun ultra10-300 (ultrasparc IIi)
9:25pm up 112 days, 1:52, 1 user, load average: 1.24, 1.05, 1.02
91 processes: 90 sleeping, 1 running, 0
don't think
w,uptime,top give the same value
The fact that they all give the same value does not indicate that you have not
been cracked. Obviously, part of the hacking is to cover trails; it'd be a
pretty poor job if they reported different values.
The mm stuff from your other message is, I
Ahh, a D state.
D means disk wait, which the only thing that can postpone a -9. Basic, the
process is stuck in a loop inside a routine that needs to be atomic.
You'll have to reboot to clear it. I believe this is a kernel bug. Try going
back to 2.2.14, or maybe up to 2.2.19pre2.
-
To
.nfs00ca40250006
so i think there is some lock from the nfs server or client
will try to restart nfs client
and see if this fixes it.
Most likely you will have to restart the nfs server on the other side as well,
but it's worth a try.
Tripwire watches the checksum of the
I disagree. Not a typewriter is part of Unix tradition, and ought to be
retained as a historical reference. It's also an opportunity for the
uninitiated to learn a little more and move a little closer to becoming the
initiated.
Heaven help us when tradition is more important than clarity.
If clarity is the most important consideration, then other things should be
changed as well. For instance, the command we use to search for text strings
in
files should be called textsearch. That's a lot more clear than grep.
Well, I can't disagree. Unix's biggest turn off was the stupid
So what is your solution for preventing a boot failure after disks/partitions
change ?
volume labels/UUID ?
As a sys-admin, let me add a vote for this. Having (one day) a prom monitor
program that looks at all the disks, and gives a menu of which one to boot
from would make life so nice.
I
This is the problem with all sorts of ID-based naming. In this case
the kernel could simply change the conflicting names a bit,
and leave the cleanup to the administrator. (Who probably
is around as he just inserted those disks)
NO, NO, NO, NO, NO.
The kernel, when asked to report on the
I apologize if this is a known issue.
I am running
Linux version 2.2.17 ([EMAIL PROTECTED]) (gcc version
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #2 SMP Sun Oct 8 02:37:43
EDT 2000
On a dual Pentium III with 256M of SDRAM, aix-7xxx, sblive, kingston tulip,
3c905, 3dfx Voodoo3 AGP.
Another linux caveat. Scads of undocumented and virtually undiscoverable
behaviours :-)
Undiscoverable? You have the source code, what more do you want? Start
documenting!
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the body of a message to [EMAIL
latest Linux kernel? I am waiting on a kernel mode driver for my USB
digital camera, but I don't want to go ahead and download the full 24Mb
For USB stuff, try:
http://www.linux-usb.org/
I like the idea of the hardware index, though...
-
To unsubscribe from this list: send the line
I am just a beginner in linux programming and I want to write a
script for disconnecting users in cisco router.
This would be the wrong list to ask such a question. It is for the discussion
of the inner workings of the Linux kernel, not for questions about
applications which can be run on a
Here is link to Intel C compiler, that provide really faster code.
http://developer.intel.com/software/products/compilers/linuxbeta.htm
A quote from the site:
* Not all of the GNU C language extensions, including the GNU inline assembly
format, are currently supported and, due to this, one
Well, I haven't gone and looked at every line of assembler, but I'd bet this
is a hasty characterization.
According to someones recent count there are around 144000 lines of assembler
in the 2.4.2 kernel.
It seems to me you'd have to jump through a lot of hoops to test this compiler.
Then
Apart from questions of optimization, compiling the same code with two
different compilers is a very good way to find bugs, both in the code
and in the compilers.
I agree that this is a workable idea. On the other hand, I'd bet Linus would
put that idea right up there with shipping a debugger
Given that seeing as much as possible on a potentially small screen would be
good, maybe tighter would be nice. In example:
kswapd:v1.8
ptyDevices: 256 Unix98 ptys configured
serial:v5.05b (2001-05-03) with
Options: MANY_PORTS SHARE_IRQ SERIAL_PCI
Devices:
No 'debug=' could then simply cause the kernel to kprint any info from
drivers/modules that failed to load, else keep schtum.
My idea is that the driver announces itself, and then what it has
found/initialized, in the minimum number of screen lines possible. I'd want
that to be the default,
Technical explanations aside, some sort of clock drift exists in all
computers. My experience with Sun hardware, for instance, was that the
hardware and software clocks rarely agreed.
You should set up your machines to use some sort of time synchronization
software, such as ntp or rdate. When
I've discovered that heavy use of vesafb can be a major source of clock
drift on my system, especially if I don't specify "ypan" or "ywrap". On my
This is extremely interesting. What version of ntp are you using?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the
On Sam, 03 Feb 2001 you wrote:
Actually, most of that time is spent running bash/sleep 1. Startup
scripts tend to be poorly designed.
Yes!
I'm not so sure. I'm using RedHat 6.2, and it seems the only time a startup script
calls sleep is when it gives you a chance to do interactive
S! Do not nudge sleeping penguin. Here is blow-by-blow of last incident:
http://kt.linuxcare.com/kernel-traffic/kt20001002_87.epl#1
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at
a. don't kill any task with a uid 100
b. if uid between 100 to 500 or CAP-SYS equivalent enabled
set it too a lower priority, so if it is at fault it will happen slower
giving more time before the system collapses
Deciding what not to kill
--On Wednesday, March 28, 2001 09:38:04 -0500 Hacksaw [EMAIL PROTECTED]
wrote:
Deciding what not to kill based on who started it seems like a bad idea.
Root can start netscape just as easily as any user, but if the choice of
processes to kill is root's netscape or a user's
On Wed, Mar 28, 2001 at 06:33:04PM -0500, Hacksaw wrote:
Why are they logged in as root in the first place? Is there something they
can't do over sudo?
I have the "Gnome workstation" version of rawhide (7.0.xxx) on my new laptop.
I don't see sudo. Of course, it's rawhide, but y
Look in section 4 of the man pages for entries starting with "console".
console
console_codes
etc.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please
Why not use it directly
Some of these reasons are:
It seems like you gave reason why userland pointers shouldn't be trusted, not
why userland data should be copied into kernel land. All the problems you
mentioned would have to be solved by the kernel regardless of copying the data
around.
Sorry if this bugs anyone, but I'm learning things here.
What I would expect the kernel to do is this:
system_call_data_prep (userdata, size){
if !4G/4G {
for each page from userdata to userdata+size
{
if the page is swapped out, swap it in
if the page is not
if you want actual concrete examples, let me know.
I'd love a few, but maybe privately?
I can certainly see where always copying is simpler; I certainly consider this
to be an optimization, which must be looked at carefully, lest you end up with
that which speed things up a little, but adds a
In compiling 2.4.29 I get this during the compilation of pci-pc.c:
Warning: indirect lcall without `*'
I note from looking around the net that this is an old problem, dating back
at least to 2.4.18, if not earlier.
What does it mean? Should I care? If I shouldn't, shouldn't there be a message
Ahh, okay. I'm just jumpy because this is a production server.
Thanks for the answer. :-)
--
Nothing can plugh you now
http://www.hacksaw.org -- http://www.privatecircus.com -- KB1FVD
-
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to [EMAIL
+ while (dlen = 2 dlen = data[1] data[1] = 2) {
Not that it matters much to me, since I don't have to maintain it, but
couldn't this be:
while (data[1] = 2 dlen = data[1]) {
I think this captures the relationship and priority.
--
http://www.hacksaw.org --
>So what is your solution for preventing a boot failure after disks/partitions
>change ?
>volume labels/UUID ?
As a sys-admin, let me add a vote for this. Having (one day) a prom monitor
program that looks at all the disks, and gives a menu of which one to boot
from would make life so nice.
I
>This is the problem with all sorts of ID-based naming. In this case
>the kernel could simply change the conflicting names a bit,
>and leave the cleanup to the administrator. (Who probably
>is around as he just inserted those disks)
NO, NO, NO, NO, NO.
The kernel, when asked to report on
> Could someone maybe explain this ?
> (top output, but same load is given with 'uptime')
> there is no cpu or disk activity
> kernel is 2.2.18pre9 on sun ultra10-300 (ultrasparc IIi)
>
>9:25pm up 112 days, 1:52, 1 user, load average: 1.24, 1.05, 1.02
> 91 processes: 90 sleeping, 1
>don't think
>w,uptime,top give the same value
The fact that they all give the same value does not indicate that you have not
been cracked. Obviously, part of the hacking is to cover trails; it'd be a
pretty poor job if they reported different values.
The mm stuff from your other message is,
Ahh, a D state.
D means disk wait, which the only thing that can postpone a -9. Basic, the
process is stuck in a loop inside a routine that needs to be atomic.
You'll have to reboot to clear it. I believe this is a kernel bug. Try going
back to 2.2.14, or maybe up to 2.2.19pre2.
-
To
> .nfs00ca40250006
>
> so i think there is some lock from the nfs server or client
>
> will try to restart nfs client
> and see if this fixes it.
>
Most likely you will have to restart the nfs server on the other side as well,
but it's worth a try.
Tripwire watches the checksum
>I am just a beginner in linux programming and I want to write a
>script for disconnecting users in cisco router.
This would be the wrong list to ask such a question. It is for the discussion
of the inner workings of the Linux kernel, not for questions about
applications which can be run on a
>I disagree. "Not a typewriter" is part of Unix tradition, and ought to be
>retained as a historical reference. It's also an opportunity for "the
>uninitiated" to learn a little more and move a little closer to becoming "the
>initiated."
Heaven help us when tradition is more important than
>If clarity is the most important consideration, then other things should be
>changed as well. For instance, the command we use to search for text strings
in
>files should be called "textsearch." That's a lot more clear than "grep."
Well, I can't disagree. Unix's biggest turn off was the
>latest Linux kernel? I am waiting on a kernel mode driver for my USB
>digital camera, but I don't want to go ahead and download the full 24Mb
For USB stuff, try:
http://www.linux-usb.org/
I like the idea of the hardware index, though...
-
To unsubscribe from this list: send the line
>Here is link to Intel C compiler, that provide really faster code.
>
>http://developer.intel.com/software/products/compilers/linuxbeta.htm
A quote from the site:
* Not all of the GNU C language extensions, including the GNU inline assembly
format, are currently supported and, due to this, one
Well, I haven't gone and looked at every line of assembler, but I'd bet this
is a hasty characterization.
According to someones recent count there are around 144000 lines of assembler
in the 2.4.2 kernel.
It seems to me you'd have to jump through a lot of hoops to test this compiler.
Then
>Apart from questions of optimization, compiling the same code with two
>different compilers is a very good way to find bugs, both in the code
>and in the compilers.
I agree that this is a workable idea. On the other hand, I'd bet Linus would
put that idea right up there with shipping a
Given that seeing as much as possible on a potentially small screen would be
good, maybe tighter would be nice. In example:
kswapd:v1.8
ptyDevices: 256 Unix98 ptys configured
serial:v5.05b (2001-05-03) with
Options: MANY_PORTS SHARE_IRQ SERIAL_PCI
Devices:
>No 'debug=' could then simply cause the kernel to kprint any info from
>drivers/modules that failed to load, else keep schtum.
My idea is that the driver announces itself, and then what it has
found/initialized, in the minimum number of screen lines possible. I'd want
that to be the default,
I apologize if this is a known issue.
I am running
Linux version 2.2.17 ([EMAIL PROTECTED]) (gcc version
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #2 SMP Sun Oct 8 02:37:43
EDT 2000
On a dual Pentium III with 256M of SDRAM, aix-7xxx, sblive, kingston tulip,
3c905, 3dfx Voodoo3 AGP.
> Another linux caveat. Scads of undocumented and virtually undiscoverable
> behaviours :-)
Undiscoverable? You have the source code, what more do you want? Start
documenting!
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL
Technical explanations aside, some sort of clock drift exists in all
computers. My experience with Sun hardware, for instance, was that the
hardware and software clocks rarely agreed.
You should set up your machines to use some sort of time synchronization
software, such as ntp or rdate. When
>I've discovered that heavy use of vesafb can be a major source of clock
>drift on my system, especially if I don't specify "ypan" or "ywrap". On my
This is extremely interesting. What version of ntp are you using?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> On Sam, 03 Feb 2001 you wrote:
> > Actually, most of that time is spent running bash/sleep 1. Startup
> > scripts tend to be poorly designed.
>
> Yes!
I'm not so sure. I'm using RedHat 6.2, and it seems the only time a startup script
calls sleep is when it gives you a chance to do
S! Do not nudge sleeping penguin. Here is blow-by-blow of last incident:
http://kt.linuxcare.com/kernel-traffic/kt20001002_87.epl#1
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at
> a. don't kill any task with a uid < 100
>
> b. if uid between 100 to 500 or CAP-SYS equivalent enabled
> set it too a lower priority, so if it is at fault it will happen slower
>
> giving more time before the system collapses
Deciding what not to
> --On Wednesday, March 28, 2001 09:38:04 -0500 Hacksaw <[EMAIL PROTECTED]>
> wrote:
> >
> > Deciding what not to kill based on who started it seems like a bad idea.
> > Root can start netscape just as easily as any user, but if the choice of
> > p
> On Wed, Mar 28, 2001 at 06:33:04PM -0500, Hacksaw wrote:
> Why are they logged in as root in the first place? Is there something they
> can't do over sudo?
I have the "Gnome workstation" version of rawhide (7.0.xxx) on my new laptop.
I don't see sudo. Of course, it's rawhi
Look in section 4 of the man pages for entries starting with "console".
console
console_codes
etc.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please
>>Why not use it directly
>Some of these reasons are:
It seems like you gave reason why userland pointers shouldn't be trusted, not
why userland data should be copied into kernel land. All the problems you
mentioned would have to be solved by the kernel regardless of copying the data
around.
Sorry if this bugs anyone, but I'm learning things here.
What I would expect the kernel to do is this:
system_call_data_prep (userdata, size){
if !4G/4G {
for each page from userdata to userdata+size
{
if the page is swapped out, swap it in
if the page is not
>if you want actual concrete examples, let me know.
I'd love a few, but maybe privately?
I can certainly see where always copying is simpler; I certainly consider this
to be an optimization, which must be looked at carefully, lest you end up with
that which speed things up a little, but adds a
In compiling 2.4.29 I get this during the compilation of pci-pc.c:
Warning: indirect lcall without `*'
I note from looking around the net that this is an old "problem", dating back
at least to 2.4.18, if not earlier.
What does it mean? Should I care? If I shouldn't, shouldn't there be a
Ahh, okay. I'm just jumpy because this is a production server.
Thanks for the answer. :-)
--
Nothing can plugh you now
http://www.hacksaw.org -- http://www.privatecircus.com -- KB1FVD
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL
+ while (dlen >= 2 && dlen >= data[1] && data[1] >= 2) {
Not that it matters much to me, since I don't have to maintain it, but
couldn't this be:
while (data[1] >= 2 && dlen >= data[1]) {
I think this captures the relationship and priority.
--
http://www.hacksaw.org --
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