I no longer use 32-bit kernels (but use the 64-bit amd64 kernel, even on
my few last remaining 32-bt machines): that seems a suitable workaround
or upgrade path. Should I try to test whether the issue with PAE
remains?
Cheers, Paul
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th similar
traffic volumes).
Following the hints in this bug report, I will try the Intel i40e
driver, from (either)
https://downloadcenter.intel.com/download/24411/
https://sourceforge.net/projects/e1000/files/i40e%20stable/
Cheers, Paul
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Dear Vincent,
> Could you provide a bit more information about the package versions
> on your system?
> dpkg -l rpcbind nfs-common nfs-kernel-server systemd
psz@como:~$ dpkg -l rpcbind nfs-common nfs-kernel-server systemd
Desired=Unknown/Install/Remove/Purge/Hold
|
=rpcbind.service instead?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
/proc/sys/kernel/sched_wakeup_granularity_ns
Please close this bug (as "solved" or "user config issue" or "invalid").
Sorry about the noise...
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
re are as many un-pinned processes as CPUs; or
- with CGROUP controls and the two kinds of processes run by
different users, when there is just one un-pinned process; or
- if the pinning is turned off for these processes (or they
are started without).
Any insight is welcome!
Thanks, Paul
P
Sorry, that should have been package linux-source-3.16
(with a dash, not underscore). Maybe I could have re-assigned
this but; but do not really know how to, so instead now submitted
new one.
Please close this errant bug report.
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http
re are as many un-pinned processes as CPUs; or
- with CGROUP controls and the two kinds of processes run by
different users, when there is just one un-pinned process; or
- if the pinning is turned off for these processes (or they
are started without).
Any insight is welcome!
Thanks, Paul
P
# CONFIG_SPARSE_RCU_POINTER is not set
Is that sufficient for sparse memory, or should I try something else?
Or maybe, you meant that some kernel source patches might be possible
in the sparse memory code?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School
. - Though, what do I know, have not yet found
the buggy line of code I believe is lurking there...
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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precisely, PAE with any RAM
fails the sleep test:
n=0; while [ $n -lt 33000 ]; do sleep 600 ((n=n+1)); done
and with 32GB fails the write test:
n=0; while [ $n -lt 99 ]; do dd bs=1M count=1024 if=/dev/zero of=x$n;
((n=n+1)); done
Why do you think 16GB is significant?
Thanks, Paul
Paul Szabo p
for the Debian
defaults to change to amd64 before reporting these oddities.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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Dear Ben,
PAE is broken for any amount of RAM.
No it isn't.
Could I please ask you to expand on that?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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((n=n+1)); done
and somewhere also said that non-PAE passes. Does not that prove
that PAE is broken?
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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OOMed then hung (tested with various RAM from 3GB to 64GB).
The feeling I get is that amd64 is proposed as a drop-in replacement for
PAE, that support and development of PAE is gone, that PAE is dead.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School
://bugs.launchpad.net/ubuntu/+source/linux/+bug/1098961/comments/18
Thanks, Paul
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School of Mathematics and Statistics University of SydneyAustralia
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in decisions where to put dirty things. Is that so, is that as
should be? What is the recommended setting of highmem_is_dirtyable?
The silence is deafening. I guess highmem_is_dirtyable is an aberration.
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School
Dear Ben,
If you can identify where it was fixed then ...
Sorry I cannot do that. I have no idea where kernel changelogs are kept.
I am happy to do some work. Please do not call me lazy.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School
Dear Ben,
... the mm maintainers are probably much better placed ...
Exactly. Now I wonder: are you one of them?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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... there is no CONFIG_NUMA nor /proc/sys/vm/zone_reclaim_mode in
the Ubuntu non-PAE plain HIGHMEM4G kernel, and still it handles the
sleep test just fine.
Where does reclaiming happen (or meant to happen)?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School
the problem does not seem
to occur when using mem=32g or lower on the kernel boot line (or on
machines with less than 32GB RAM).
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
handles the same sleep test without any problems.
(Thus I now think that the remaining bug is not with writeback.)
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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against the sleep test.
... What's your filesystem and the content of /proc/slabinfo?
Filesystem is EXT3. See output of slabinfo in Debian bug above or in
http://marc.info/?l=linux-mmm=135796154427544w=2
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz
of vm_highmem_is_dirtyable?
It seems odd that it would be used in setting limits or threshholds, but
not used in decisions where to put dirty things. Is that so, is that as
should be? What is the recommended setting of highmem_is_dirtyable?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http
writing a few files, but does not protect when running
a few sleeps. I am coming back to the idea that this is some
signed-vs-unsigned or similar issue... though I could not find it yet!
---
Using the amd64 kernel seems a workable workaround for the OOM issue.
Cheers, Paul
Paul Szabo p
Ensure MAX_PAUSE is 4 or larger, so limits in
return clamp_val(t, 4, MAX_PAUSE);
(the only use of it) are not back-to-front.
(This patch does not solve the PAE OOM issue.)
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics
When calculating amount of dirtyable memory, min_free_kbytes should be
subtracted because it is not intended for dirty pages.
Using an extern int because that is the only interface to some such
sysctl values.
(This patch does not solve the PAE OOM issue.)
Paul Szabo p...@maths.usyd.edu.au
() should add
or include NR_SLAB_RECLAIMABLE.
(This does not solve the PAE OOM issue.)
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
Reported-by: Paul Szabo p...@maths.usyd.edu.au
Reference: http
to s64 also prevents overflow with left-shift;
though normally these numbers are small and I never observed a 32-bit
overflow there.
(This patch does not solve the PAE OOM issue.)
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics
from 64447796 with PAE kernel), and I do not see much
change in /proc/iomem output (below). Is that as should be?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
---
root@zeno:~# uname
-PAE HIGHMEM4G kernel would
work fine), and that one should definitely switch with over 4GB RAM.
There would be no need or use for PAE kernels, which should be dropped.
I think I agree.
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics
: sorry I do
not know how to interpret it.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
---
root@zeno:~# cat /proc/iomem
- : reserved
0001-00099bff : System RAM
and useless, should be deprecated and removed.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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, apt-get does not
see the amd64 kernels.
Thanks, Paul
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School of Mathematics and Statistics University of SydneyAustralia
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,
hopefully so abandoning buggy PAE.
Cheers, Paul
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School of Mathematics and Statistics University of SydneyAustralia
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Swap: 2920 0 2920
and re-trying the sleep test, it ran into OOM after 18000 or so sleeps
and crashed/froze so I had to press the POWER button to recover.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics
Reported to Ubuntu also:
PAE regression: OOM with just a few sleeps
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1098961
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
---
root@como:~# free -lm
total used free sharedbuffers cached
Mem: 62936 2317 60618
,
limit - setpoint + 1);
pos_ratio = x;
pos_ratio = pos_ratio * x RATELIMIT_CALC_SHIFT;
...
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
:769044 120232 648812
High: 13740320 315208 13425112
-/+ buffers/cache: 320044 14189320
Swap:134217724 0 134217724
---
Please let me know of any ideas, or if you want me to run some other
test or want to see some other output.
Thanks, Paul
Paul Szabo p
/solution/workaround for that particular test.
Now I observed another way of making a machine with 64GB crash (sorry,
not crash but to suffer an OOM episode). I am pretty sure this other
test is reproducible, but is cumbersome to set up and tedious to do.
Cheers, Paul
Paul Szabo p
://bugs.debian.org/cgi-bin/bugreport.cgi?msg=101;att=1;bug=695182
(Please reply to me directly, as I am not a subscriber to the linux-mm
mailing list.)
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of Sydney
much sooner with
64GB than with 34GB. Also, the kernel seems capable of reclaiming
lowmem, so I wonder why does that fail just over the 32GB threshhold.
(Obviously I have no idea what I am talking about.)
---
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz
-/+ buffers/cache:4232800 60214100
Swap:134217724 0 134217724
psz@como:~$
(though I would not know about violations).
But OK, I take your point that I should move with the times.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School
again into kernel code.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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a few warnings. I had my patch in use for a while now, so I believe
it is suitably tested.
Please let me know if I need to do anything else.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
could be more easily contemplated in
isolation?
Hmm... I would much prefer to leave it as is.
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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tags 695182 - moreinfo
thanks
Dear Ben,
I suggest the following patch, which seems to solve the problem.
Two attachments: minimal.patch just to show the simplicity, and
complete.patch with comments and enhancements.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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Archive
writeback_tmp:0kB pages_scanned:16060
all_unreclaimable? yes
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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, with that patch in place I still got an OOM crash (log below).
More bugs remain...
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
---
Dec 17 12:43:59 zeno kernel: xterm invoked oom-killer
of bdi_position_ratio(). I will now
look for that elusive next bug.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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to have enough dirty pages that the shift
overflows into the sign bit. We need to cast to s64 before the
left-shift.
Reported-by: Paul Szabo paul.sz...@sydney.edu.au
Reference: http://bugs.debian.org/695182
Signed-off-by: Ben Hutchings b...@decadent.org.uk
---
mm/page-writeback.c |2
affected by signedness bugs.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
*** mem=34G - Tail end of /var/log/kern.log
[0.00] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.2.0-4
to show anything unusual.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
Extract from output:
total used free sharedbuffers cached
Mem
?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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groups or in other words doing
manage primary group similar to secondaries with -manage_gids, and
issue might be solved.
(In that sense NFSv4+krb is more broken, less feature-rich, than
AUTH_SYS.)
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School
, which would behave like --manage-gids except it
transforms the effective gid to anongid when the specified gid is not
a group the user belongs to? I haven't carefully looked over the
protocol specs but at first glance that seems sensible.
Yes, my exact wish.
Thanks, Paul
Paul Szabo p
results start?
Thanks,
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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,
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
-- System Information:
Debian Release: 6.0.4
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-pk05.09
The problem did not re-occur after upgrading to 2.6.26-24.
Maybe fixed... Please close bug: I cannot reproduce anymore.
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
that helps.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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bari kernel: EIP: [c014b326] find_get_pages+0x46/0x70 SS:ESP 0068:f7e39e40
bari kernel: ===
Thanks,
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
-- System Information:
Debian
) ... oh well, will patch myself.
Cheers, Paul
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School of Mathematics and Statistics University of SydneyAustralia
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Thanks. Pity you did not let Bug#568317 (and thus the world) know.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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, in the near future? (Surely not, surely
commit has meanings unrelated to to be in next stable update.)
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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guess should not use reportbug for
that, am not sure how.)
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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-package is in slow maintenance,
What does slow maintenance mean? They seem more up-to-date that
linux-2.6 in Debian stable. Anyway please arrange for kernel-package to
be fixed also.
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics
or in the near future).
Seeing your reluctance to talk to kernel-package, I now reported
Bug#568823.
Please report the issue with
http://packages.debian.org/source/lenny/linux-2.6 .
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics
time ago, but
still
http://packages.debian.org/search?keywords=linux-2.6searchon=sourcenamessuite=stablesection=all
http://packages.debian.org/source/lenny/linux-2.6
show 2.6.26-19lenny2 : is that a problem?
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz
*(no|false|0)\s*$/i;
...
$image_dest = $1 if m/^\s*image_dest\s*=\s*(\S+)\s*$/i;
I wonder about the need to use my() in a single-level script.
---
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics
at the beginning; did not drop the unnecessary my().
Cheers, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
--- usr/share/kernel-package/pkg/headers/postinst.bak 2008-05-02
15:06:28.0 +1000
changes simple enough so you do not need actual patch files?)
Thanks, Paul
Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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know if you need further details.
Thanks,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
-- System Information:
Debian Release: 4.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386
anything, so that might be OK.
Cheers,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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The patch below (against 2.6.8-16sarge7) seems to solve the problem.
I now run my machines with both this patch, and also the one I submitted
on 20 Jul. Please include in future versions of the kernel.
Thanks,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School
Have now tested the patch in my previous message: it does not solve
the problem I reported.
Cheers,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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tested whether this works at all, or whether it
improves anything.
Thanks,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
--- fs/nfs/dir.c.bak2004-08-14 15:36:58.0 +1000
+++ fs/nfs/dir.c
/exports).
Cheers,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.6.8-spm1.7
Locale: LANG=C, LC_CTYPE=C (charmap
e1000_driver_name[] = e1000;
char e1000_driver_string[] = Intel(R) PRO/1000 Network Driver;
char e1000_driver_version[] = 5.2.52-k4;
char e1000_copyright[] = Copyright (c) 1999-2004 Intel Corporation.;
are quite old (so seem to be affected).
Cheers,
Paul Szabo [EMAIL PROTECTED] http
, and never set non-default permissions on /usr/local or
altered root's PATH. I beleive it renders many other systems exploitable
also, but have no ways to test that hypothesis.
Cheers,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics
-2.6.16 (hmm... why the specific version?) where the maintainer is
a nebulous committee, again you re-jiggle severity; and no word from the
maintainers.
Thanks,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of Sydney
or if the policy allows us to fix our systems; or
if at great expense we implement squashing GIDs.
The answer remains, don't set your NFS environment up that way.
The correct answer seems to be fix or ignore the policy.
Cheers,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz
severity 384922 critical
thanks
Dear Steve,
The issue is root compromise of an NFS server. If that is possible then
it is critical; if it is not possible then the bug is solved. It seems
logically impossible to downgrade this kind of bugs.
Cheers,
Paul Szabo [EMAIL PROTECTED] http
removal from Debian.
Cheers,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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is a tiny policy change, to be permitted to drop
/usr/local things from root's PATH, or to remove group staff writability
from those things. Everyone seems to know those should be done...
Thanks for your help,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics
Dear Steve,
You seem to think that this is important but not critical.
Don't you agree that it is a root security hole?
Thanks,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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...
Cheers,
Paul Szabo [EMAIL PROTECTED] http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics University of SydneyAustralia
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