Help answer threads with 0 replies.
Go Back > Forums > Linux Forums > Linux - Software > Linux - Kernel
User Name
Linux - Kernel This forum is for all discussion relating to the Linux kernel.


  Search this Thread
Old 03-01-2009, 06:44 AM   #1
LQ Newbie
Registered: Dec 2008
Posts: 8

Rep: Reputation: 0
kernel BUG in preempt_schedule_irq at kernel/sched.c:3114!

Hi all,
My system is a PPC running kernel .
My application uses interrupts to collect bytes from the uart .
And I have to uarts running in parallel which signal to the same interrupt line . When I run only one uart at a time the system works fine . But when the 2 run symultaniously the system crashes as follows :

" kernel BUG in preempt_schedule_irq at kernel/sched.c:3114!
Oops: Exception in kernel mode, sig: 5 [#1]
NIP: C02297A8 LR: C0004A40 SP: C0286170 REGS: c02860c0 TRAP: 0700 Tainted: P
MSR: 00029032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
TASK = c0265b00[0] 'swapper' THREAD: c0286000
Last syscall: 120
GPR00: 00000001 C0286170 C0265B00 00009032 00000000 00003032 00600084 C02B5594
GPR08: C0280000 C0286000 00000001 C026A200 512037AD 4377FFBF 0FFFD000 00000000
GPR16: 00000001 00000001 FFFFFFFF 007FFF00 0FFF7E68 00000000 00000002 0FBC62B0
GPR24: 00000000 00000000 40000000 007FFF7D 007FFF00 C02A0000 C0265B00 C02A28F0
Call trace: [c0004a40] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c] [c0004c7c]
Kernel panic - not syncing: Attempted to kill the idle task!
<0>Rebooting in 1 seconds.. "

Does anyone have an idea why this is happening and what am I doing wrong ?

Yigal Goldberger .


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Kernel Bug? carda Linux - Software 3 09-12-2008 04:06 PM
how to diagnose kernel BUG at kernel/exit.c:840! ? Helma Linux - Kernel 2 12-23-2007 01:47 AM
kernel 2.6.9-34 BUG TYU Linux - Server 2 08-14-2007 08:56 AM
Architecture dependency of switch_to in /kernel/sched.c skie_knite007 Programming 0 02-19-2006 08:40 AM
a bug maybe in the new kernel 2.4.19? Frustin Linux - General 2 08-06-2002 04:20 AM

All times are GMT -5. The time now is 12:40 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration