- WLUG - wlug.mailman3.com

fsck, segmantation fault, etc.
by Baris Hasdemir 24 Jun '02

24 Jun '02

Hi, I bought a new hard drive, Maxtor 7200 RPM, ATA133, 40GB, and began using it at ATA100. I formatted my /dev/hda5 with mkfs.ext2 and mounted it under /home. I have been using this mount with the Slackware 8.0 at /dev/hda6 for several days without any problems. Two days ago I installed Slackware8.1 on /dev/hda8 and used the same device mounted to /home. (/dev/hda5) Yesterday under root privileges I attempted to delete a user's two big files, and got the following error (or warning, I don't know): root@penguen:/home/avci# rm more_than_700MB_files* EXT2-fs error (device ide0(3,5)): ext2_free_blocks: Freeing blocks not in datazone - block = 1083636778, count = 1 EXT2-fs error (device ide0(3,5)): ext2_free_blocks: Freeing blocks not in datazone - block = 1083606420, count = 1 EXT2-fs error (device ide0(3,5)): ext2_free_blocks: Freeing blocks not in datazone - block = 1083602068, count = 1 EXT2-fs error (device ide0(3,5)): ext2_free_blocks: Freeing blocks not in datazone - block = 1083602292, count = 1 root@penguen:/home/avci# ls -al total 24 drwx--x--x 2 avci misafir 4096 Jun 23 12:47 ./ drwxr-xr-x 10 root root 4096 Feb 25 2001 ../ -rw------- 1 avci misafir 36 Jun 17 17:26 .bash_history -rw-r--r-- 1 avci misafir 34 Jun 17 16:44 .less -rw-r--r-- 1 avci misafir 114 Jun 17 16:44 .lessrc -rw-r--r-- 1 avci misafir 3394 Jun 17 16:44 .screenrc However, rm deleted the files. But I couldn't understand the warning. And then, just because of curiosity I tried to copy one of the same big files from another partition to the same location, and cp gave out those: root@penguen:/home/avci# time cp /mnt/hda10/one_of_the_big_files . Unable to handle kernel NULL pointer dereference at virtual address 00000004 *pde = 00000000 Oops: 0002 CPU: 0 EIP: 0010:[<c0128240>] Tainted: P EFLAGS: 00010046 eax: cbf58000 ebx: 00000003 ecx: ca000000 edx: 00000000 esi: c1405e50 edi: 00000202 ebp: c12f1f80 esp: c14e7efc ds: 0018 es: 0018 ss: 0018 Process kswapd (pid: 4, stackpage=c14e7000) Stack: ca000240 cbe9b8c0 cbe9bb40 c12f1f80 c0130f12 c1405e50 ca000240 c0132a9c ca000240 ca000240 c12f1f80 000001d0 00000009 00000200 c013118c c12f1f80 000001d0 cbe9bb40 c12f1f80 c0128f62 c12f1f80 000001d0 00000020 000001d0 Call Trace: [<c0130f12>] [<c0132a9c>] [<c013118c>] [<c0128f62>] [<c01291a6>] [<c012921c>] [<c01292b3>] [<c0129316>] [<c012942d>] [<c0105708>] Code: 89 42 04 89 10 8b 46 08 89 48 04 89 01 8d 56 08 89 51 04 89 real 0m54.986s user 0m0.060s sys 0m7.330s And then of course I did a couple of fsck on this partition after unmounting. first one quitted after several error correcting, second fsck did segmentation fault but the last one did finish fsck. and lots of error were corrected. It might give an idea if I mount it like this #mount /dev/hda5 /home file names appear as $@#$#%#$ etc. but if I mount it like that #mount /dev/hda5 /home -t ext2 no problem seem to occur. I am thinking about whether I did something missing at the fdisk stage or formatting stage. Or is my new hard disk a dead-born? Or any other things you may notice? thank you, baris

2 2

Who is port scanning me?
by Simoncini, Matthew 24 Jun '02

24 Jun '02

Hi everyone, I'm constantly getting port scanned from a certain IP address on our internal corporate network. I'd really like to find out where and who this person is, but don't know much outside of ping, traceroute, nslookup, etc .... I was wondering if anyone knows of any tools that can get me more information on this person? This happens to be on our private network, so most internet tools I don't think will help much. Thanks for your time. Matthew

6 5

Re: [Wlug] Who is port scanning me?
by Joe Riopel 21 Jun '02

21 Jun '02

You could download Sam Spade ( I only know of a windows version ). It will give you a good amount of information about an IP address. -Joe

1 0

Re: [Wlug] Who is port scanning me?
by Peter Gutowski 21 Jun '02

21 Jun '02

On Friday, June 21, 2002 4:24 PM, Simoncini, Matthew <Matthew.Simoncini(a)bsci.com> wrote: >Hi everyone, > >I'm constantly getting port scanned from a certain IP address on our >internal corporate network. I'd really like to find out where and who this >person is, but don't know much outside of ping, traceroute, nslookup, etc >.... I was wondering if anyone knows of any tools that can get me more >information on this person? This happens to be on our private network, so >most internet tools I don't think will help much. > >Thanks for your time. > >Matthew >_______________________________________________ >Wlug mailing list >Wlug(a)mail.wlug.org >http://mail.wlug.org/mailman/listinfo/wlug > With iptables (upgrade to ipchains and so much more sophisticated) installed you can configure it to ignore *any* packet sent from that machine [defining it by IP address or MAC address] -- responding (or not, this case) as if your computer were turned off. Works for me. -- Peter Gutowski <peter(a)linuxchamps.com> // tel.: (413) 531-0123 "When in company, put not your hands to any part of the body not usually discovered." --George Washington, _Rules for Civility and Decent Behavior_

1 0

browser war
by Karl Hiramoto 20 Jun '02

20 Jun '02

A co-worker wanted help checking his AOL e-mail. He would usually use M$ IE to longin to the AOL webmail. M$ IE now crashes on the webmail page. It is unuseable in most cases. I installed netscape 6.2.3 the AOL webmail page works 100%. So the Netscape/AOL time warner broswer works there. return of the browser wars. -- ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø Karl Hiramoto <karl(a)hiramoto.org> Work: 978-425-2090 ext 25 Cell: 508-517-4819 Personal web page: http://karl.hiramoto.org/ Zoop Productions: http://www.zoop.org/ KTEQ Rapid City: http://www.kteq.org/ AOL IM ID = KarlH420 Yahoo_IM = karl_hiramoto ¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø,¸¸,ø¤º°`°º¤ø PENGUINICITY!!

3 2

XO goes Chapter 11...
by Stephen C. Daukas 19 Jun '02

19 Jun '02

Thought I'd pass this along in case anyone out there is thinking of going with XO Communications. http://www.xo.com/news/restructuring_update.html

2 1

Boston Globe article
by Bill Mills-Curran 18 Jun '02

18 Jun '02

http://digitalmass.boston.com/news/globe_tech/at_large/2002/0617.html Today's edition of the Boston Globe has an article about collaborative tools. Featured in the article is a product called SiteScape which I had seemed demo'd just last week. Many of the features of the collaborative tool set are familiar to me in other settings: email, IRC (for "immediate" stuff), news (for discussions) and version control to track document modifications. One feature they mentioned that I have not encountered in the UNIX/Linux/Gnu world is a collaborative whiteboard that allows different users to share an electronic whiteboard. Has anyone seen anything like this in the open source community? Ideally, it would be web-based so that it would not be specific to any one client OS. Thanks, Bill

3 3

Laptop question - screen resolution
by Andy Stewart 18 Jun '02

18 Jun '02

HI WLUG, My laptop has a 15" screen rated for 1024x768. I setup my laptop to have 3 resolutions in my XF86Config file: 1024x768 (default) 800x600 640x480 With XFree86 4.x, it appears that I don't explicitly need to specify a mode line any more (but I can if I wish). SuSE's configuration process puts a mode line in for me. When I run X and then run xvidtune, when I'm in 1024x768 mode, it indicates a refresh of 60 Hz. However, when I run in 800x600 mode, xvidtune thinks the refresh rate is around 90Hz, and in 640x480 mode, xvidtune thinks the refresh rate is 131 Hz(!). I'm not sure I believe it since I don't think the display can handle that (but if it is true, am I seriously overdriving the display?). Also note that in the lower resolution modes, the display actually looks a tad fuzzy. I am not using anti-aliased fonts. Is this normal for laptops or am I doing something wrong? Thanks, Andy -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org

4 3

Javascript Help
by Wesley Allen 18 Jun '02

18 Jun '02

Guys, My Javascript + dhtml has always been one great hack. And, unlike the other scripting languages I use (all open source) there just doesn't seem to be a great "javascript community" on the web. Just lots of free samples (yes, i've googled, maybe not enough). Here's my problem. I've got a table and I want one column to be used to display the different links in each area. If I mouse over "about us" I want the other table to display the links for that area. when I do this outside a table, I just create a bunch of <div>'s that are hidden, and just Javascript to make them visible and raise their z-index at the proper time (yes, terrible hack, my javascript sucks). In the table, I'm not sure how to "stack" the different <div>'s. I though relative positioning would do the trick, because the parent for all of the <div>'s should be the <td> tag, but instead the <div>'s relatively position to one another. So, I'm kinda stuck. Any help you can give would be great, web sites with tutorials are great too. Pre-made scripts are ok, but I'm actually trying to learn something here. Thanks, Wes

2 2

Xmon / Serial cable
by Skip Gaede 17 Jun '02

17 Jun '02

Folks, I'd like to try my hand at debugging the kernel boot process on a Macintosh PPC. I have a couple of silly questions, though. 1) Can I debug a Mac from an x86 box using Xmon? 2) I need a null modem cable to connect my Athlon and my Mac. Any thoughts as to where I could buy such a beast, or how to wire one up from parts obtained from Radio Shack? Thanks, Skip

2 2