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Kernel Panic
by Mickael Maddison 01 Feb '06

01 Feb '06

Greetings, Had a system lock up last night. I've captured the following data from the logs: Jan 31 18:13:04 webserver kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000400 Jan 31 18:13:04 webserver kernel: printing eip: Jan 31 18:13:04 webserver kernel: c013f952 Jan 31 18:13:04 webserver kernel: *pde = 20ae6001 Jan 31 18:13:04 webserver kernel: Oops: 0000 [#1] Jan 31 18:13:04 webserver kernel: SMP Jan 31 18:13:04 webserver kernel: Modules linked in: loop md5 ipv6 autofs4 sunrpc ip_conntrack_ftp ipt_REJECT ipt_state ip_conntrack iptable_filter ip_tables microcode dm_mod button battery ac uhci_hcd hw_random e100 mii ext3 jbd ata_piix sata_promise libata sd_mod scsi_mod Jan 31 18:13:04 webserver kernel: CPU: 0 Jan 31 18:13:04 webserver kernel: EIP: 0060:[<c013f952>] Not tainted VLI Jan 31 18:13:04 webserver kernel: EFLAGS: 00010006 (2.6.9-22.0.1.ELsmp) Jan 31 18:13:04 webserver kernel: EIP is at find_lock_page+0x22/0x9d Jan 31 18:13:04 webserver kernel: eax: 00000400 ebx: 00000400 ecx: b7ff5000 edx: 00000400 Jan 31 18:13:04 webserver kernel: esi: e1f88a48 edi: e1c7bde0 ebp: 0000145b esp: e1c7bd90 Jan 31 18:13:04 webserver kernel: ds: 007b es: 007b ss: 0068 Jan 31 18:13:04 webserver kernel: Process popper (pid: 23878, threadinfo=e1c7b000 task=f7428eb0) Jan 31 18:13:04 webserver kernel: Stack: 00000000 e1c7bdd8 e1c7bde0 0000145b c014107c f7f42e00 0000005b 00000000 Jan 31 18:13:04 webserver kernel: b7ff405b 00000fa5 e1f88998 f88d3820 e1f88a48 edb09280 00000001 e1c7bef8 Jan 31 18:13:04 webserver kernel: 00000000 e1c7bebc 00000000 2f000000 00000000 00000000 e1c7be0c 00000000 Jan 31 18:13:04 webserver kernel: Call Trace: Jan 31 18:13:04 webserver kernel: [<c014107c>] generic_file_buffered_write+0xe5/0x47c Jan 31 18:13:04 webserver kernel: [<c012625c>] current_fs_time+0x44/0x4c Jan 31 18:13:04 webserver kernel: [<c012625c>] current_fs_time+0x44/0x4c Jan 31 18:13:04 webserver kernel: [<c014179c>] __generic_file_aio_write_nolock+0x389/0x3b7 Jan 31 18:13:04 webserver kernel: [<c0141803>] generic_file_aio_write_nolock+0x39/0x7f Jan 31 18:13:04 webserver kernel: [<c01419ed>] generic_file_aio_write+0x72/0xc6 Jan 31 18:13:04 webserver kernel: [<f88b9d7a>] ext3_file_write+0x19/0x8b [ext3] Jan 31 18:13:04 webserver kernel: [<c0159c3c>] do_sync_write+0x97/0xc9 Jan 31 18:13:04 webserver kernel: [<c011fec9>] autoremove_wake_function+0x0/0x2d Jan 31 18:13:04 webserver kernel: [<c02cf5cb>] __cond_resched+0x14/0x39 Jan 31 18:13:04 webserver kernel: [<c015962c>] generic_file_llseek+0x30/0xcb Jan 31 18:13:04 webserver kernel: [<c0159d24>] vfs_write+0xb6/0xe2 Jan 31 18:13:04 webserver kernel: [<c0159dee>] sys_write+0x3c/0x62 Jan 31 18:13:04 webserver kernel: [<c02d0fb7>] syscall_call+0x7/0xb Jan 31 18:13:04 webserver kernel: [<c02d007b>] __lock_text_end+0x232/0x100fJan 31 18:13:04 webserver kernel: Code: 04 19 00 89 d8 5b 5e 5f c3 55 89 d5 57 56 89 c6 8d 40 10 53 e8 d6 02 19 00 8d 46 04 89 ea e8 11 fe 07 00 85 c0 89 c3 74 6e 89 c2 <8b> 00 f6 c4 80 74 03 8b 53 0c f0 ff 42 04 f0 0f ba 2b 00 19 c0 Jan 31 18:13:04 webserver kernel: <0>Fatal exception: panic in 5 seconds Jan 31 18:13:05 webserver crond(pam_unix)[23911]: session closed for user root What's the best way to track down the source of this panic? -- Best regards, Mike

1 0

how to keep updated
by spart cus 01 Feb '06

01 Feb '06

hi guys, just recently install centos on my machine. how can i be always updated from patches? should i run up2date and install everything ? --------------------------------- Do you Yahoo!? With a free 1 GB, there's more in store with Yahoo! Mail.

3 3

Kernel to boot?
by spart cus 01 Feb '06

01 Feb '06

hi guys, after installing centos on my ml350 i found 2 choices on the grub options. CENTOS-4 i386 (2.6.9-22.ELsmp) CENTOS-4 i386-up (2.6.9-22.EL) what choice will i choose ? --------------------------------- Yahoo! Autos. Looking for a sweet ride? Get pricing, reviews, & more on new and used cars.

3 2

Booting centos from a windows ris server
by Plant, Dean 01 Feb '06

01 Feb '06

We are thinking of using pxe boot with a windows ris server to start off a Centos 4 install. Does anyone know if this is possible? Thanks Dean

2 1

Xen packages for CentOS
by carlopmart 01 Feb '06

01 Feb '06

Hi all, Somebody knows if exists xen rpm packages for Centos 4.2 using EL kernel?? Thanks. -- CL Martinez carlopmart {at} gmail {d0t} com

1 0

Unknown Files in /tmp
by Mark Sargent 01 Feb '06

01 Feb '06

Hi All, 2 days ago, I used skype on my laptop, which hadn't seen the net before then. I successfully spoke with my mother, and had no problems. Yesterday, I had what I believe was an unauthorized access to my laptop, so, I changed all passwds on my smoothwall box, and also put the local host onto a new subnet. Today, I experienced some weirdness with skype, where, I could hear/be heard, but, the ring tone for calling/receiving had stopped. I most certainly made no changes to skype's configuration. Today, whilst snooping around my laptop, for numerous things, I came upon some files in /tmp, which I don't recognize, [root@localhost tmp]# ls keyring-XphDRC gconfd-racket mapping-racket ssh-qONcvE2869 gconfd-root orbit-racket xses-racket.bWVjc5 keyring-P5i6Xo orbit-root below is just some content from "xses-racket.bWVjc5" (nautilus:2955): Eel-WARNING **: Error starting command ''/tmp/keyring-XphDRC/socket'': Failed to execute child process "/tmp/keyring-XphDRC/socket" (Permission denied) I ran a soundcard test today, could that be it? This is all probably not related, but, I find it odd. What do you think? I googled for info on the filenames, but, found nothing. Cheers. Mark Sargent.

6 13

dag , dries, freshrpms, rpmfind, atrpms repositories configuration for Centos 4.0
by ankush grover 01 Feb '06

01 Feb '06

hey friends, I want to add repositories like dag,dries,freshrpms,rpmfind etc to yum on Centos4.0 Can somebody tell me the entries for these ? Thanks & Regards Ankush Grover

2 1

Upgrade From RHEL3
by Scott Taylor 31 Jan '06

31 Jan '06

Hello all, Has anyone experienced upgrading from RHEL3 to Centos 4.2? Is it advisable? I'm running mostly native RH stuff, Apache Web server, Sendmail, Squid and IPTables gateway. Will an upgrade work or should I start from scratch? -- Scott

4 4

agp video card direction
by Robert Hanson 31 Jan '06

31 Jan '06

greetings i am thinking of purchasing a 256 meg or larger AGP video card my current card is a 128 meg nvidia geforce fx 5200 and i have a viewsonic vp201s lcd monitor are their larger memory AGP cards worth buying? i have no idea it will be for serious CentOS and Win XP integration and testing and eventually production issues... XP is a necessary support issue in these circumstances since i am not a gamer (used to duke nukem a long time ago etc) i am mainly looking for the best stability and quality price performance etc blah i hope to do anything and everything with this card eventually im willing to spend an extra few bucks to "do right" in this purchase. can everyone chime in on nvidia vrs ati and all that please? thanks in advance! - rh -- Robert Hanson - Abba Communications Computer & Internet Services (509) 624-7159 - www.abbacomm.net

2 2

Redirect messages IPTABLES
by Adriano Frare 31 Jan '06

31 Jan '06

Dear Friends, How I do redirect messages LOG IPTABLES of Screen to file ? Thanks Adriano

2 1

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