Thanks to everyone who help me solve this one... As suspected by a few of you it turned out to be duff CPU - you mean Linux can't work around that yet!! ;) Thanks again. Jamie... ---------- Forwarded message ---------- Date: Tue, 1 May 2001 05:46:02 +0100 (GMT Daylight Time) From: Jamie Harris <[EMAIL PROTECTED]> To: [EMAIL PROTECTED], Bristol LUG <[EMAIL PROTECTED]>, [EMAIL PROTECTED] Subject: Kernel NULL pointer, over my head... Morning all, Sorry for the big cross post but I don't have the first clue about where to send this one. I get this from my stock 2.2.18 kernel in /var/log/syslog: May 1 05:27:36 mnemosyne kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 May 1 05:27:36 mnemosyne kernel: current->tss.cr3 = 00362000, %cr3 = 00362000 May 1 05:27:36 mnemosyne kernel: *pde = 00000000 May 1 05:29:36 mnemosyne kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 May 1 05:29:36 mnemosyne kernel: current->tss.cr3 = 036dc000, %cr3 = 036dc000 May 1 05:29:36 mnemosyne kernel: *pde = 00000000 May 1 05:30:28 mnemosyne kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 May 1 05:30:28 mnemosyne kernel: current->tss.cr3 = 00ca7000, %cr3 = 00ca7000 May 1 05:30:28 mnemosyne kernel: *pde = 00000000 This time it seemed to be caused by running tar on a file, but I've noticed a similar error in the past but they've never made anything fall over. The tar process appeared to die but then again so did the telnet session so I don't know in what order they went down. I tried 3 times just to check it wasn't a fluke... What other details would be useful?? Cheers Jamie... PS I'm not on the linux-kernel list so please post to me directly... =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *** Slowly and surely the UNIX crept up on the Nintendo user... *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GCS/ED d-(++) s:+ a- C+++>++++$ U+++>$ P++++ L+++>+++++ E+(---) W++ N o? K? w(++++) O- M V? PS PE? Y PGP- t+ 5 X- R- tv- b++ DI++ D+++ G e++ h* r++>+++ y+++ ------END GEEK CODE BLOCK------ - 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 read the FAQ at http://www.tux.org/lkml/