Bug 24610 - Kernel panic on echo 1 > /dev/dsp
Kernel panic on echo 1 > /dev/dsp
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Michael K. Johnson
Brock Organ
Florence Gold
Depends On:
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Reported: 2001-01-22 12:07 EST by David Balažic
Modified: 2007-04-18 12:30 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2001-02-13 05:26:26 EST
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RHEL 7.3 requirements from Atomic Host:
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Description David Balažic 2001-01-22 12:07:52 EST
This gives me a kernel panic :

root# /bin/sync  # just in case ... oops happens without this too
root# echo 1 >/dev/dsp
< a lot of similar lines , like [<xxxxx>] [<xxxxx>] , snipped >
[<c8890e88>] [<c8890f55>] [<c010b84a>] [<c010b9c8>] [<c010a6b0>]
Aiee,killing interrupt handler
Kernel panic: Attempted to kill the idle task!
In interrupt handler - not syncing
Code: 89 42 04 89 10 b8 01 00 00 00 c7 41 04 00 00 00 00 c7 01 00

When I first encountered this, a lot of random characters was
printed on the screen at high speed, after some ( more than 10 )
seconds it was still scrolling by and I reset the machine.

This happens also if I prelload the sound module.

My /etc/modules.conf :

alias parport_lowlevel parport_pc
alias sound-slot-0 via82cxxx_audio
alias sound-slot-1 es1370
alias usb-controller usb-uhci
options es1370 lineout=1

Hardware :
MS K7T Pro2 motherboard , VIA KT133 chipset , 82c686a south bridge
Creative SoundBlaster 64 PCI
CPU Duron 700 MHz
MSI Starforce 8818 gfx card ( AGP 32 MB SDRAM, GeForce2MX )
Comment 1 Glen Foster 2001-01-22 12:41:08 EST
This defect is considered MUST-FIX for Florence Gold release
Comment 2 Arjan van de Ven 2001-01-22 15:44:42 EST
what kernel version is this ?
Comment 3 David Balažic 2001-01-23 07:35:54 EST
The one from Florence beta2 : kernel-2.4.0-0.43.12
I don't know which architecture ( i386, i586 or i686 ).
But I did a custom install on a Duron 700MHz system,
so it's the one which is normally choosed by anaconda
on such systems.
Comment 4 Arjan van de Ven 2001-02-05 11:27:44 EST
Could you try with the most recent one? A lot has been changed / fixed since
Comment 5 David Balažic 2001-02-12 05:32:16 EST
Same in Fisher.
This time tested without the SB64PCI.
Comment 6 David Balažic 2001-02-13 05:26:22 EST
I installed kernel 2.4.2-pre3 ( from Linus )
and the oops does not happen.
There are some changes in the via audio driver
in 2.4.2-preX and also in patch-2.4.1 that probably
fixed the problem.
Comment 7 Michael K. Johnson 2001-02-13 19:19:39 EST
Probably fixed in our -ac series as well.  I'm going to mark this
one fixed RAWHIDE; check later beta releases and if they don't fix
it for you please re-open.

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