[95343] in RedHat Linux List
Re: Eth0: Interrupts
daemon@ATHENA.MIT.EDU (Jose M. Sanchez)
Sat Oct 17 02:20:55 1998
Reply-To: "Jose M. Sanchez" <opjose@ex-pressnet.com>
From: "Jose M. Sanchez" <opjose@ex-pressnet.com>
To: <redhat-list@redhat.com>
Cc: <sbayne@nsccux.sccd.ctc.edu>
Date: Sat, 17 Oct 1998 02:32:08 -0400
Resent-From: redhat-list@redhat.com
This means that an IRQ request caused the CPU to service a device... via a
driver.
The driver of that device turned off IRQ (hence the workd "masked")...
While the driver was "doing it's thing" another IRQ came along, which should
not have.
This happened for one of several reasons:
1) A misconfigured card. You have one or more devices sharing an IRQ
(something Linux does not like). Type "procinfo", "scanpci" and "cat
/proc/interrupts" for more info. Move the card to another slot until the
bios does not share the IRQ or disable another card or device.
2) Make sure your modem is NOT set to COM3 or COM4.
3) You are loading a device driver erroneously. This driver is not
configured correctly for your hardware.
4) A buggy driver. The driver is not remasking IRQ's and returning control
to the OS quickly enough.
5) A buggy bios.
-JMS
-----Original Message-----
From: Sam Bayne <sbayne@nsccux.sccd.ctc.edu>
To: redhat-list@redhat.com <redhat-list@redhat.com>
Date: Friday, October 16, 1998 12:46 PM
Subject: Eth0: Interrupts
>On both of the Linux servers on our campus network I get console error
>messages:
>
>eth0: interrupted while interrupts are masked! isr=0x2 imr=0x0
>
>Unfortunately, this message only occurs on the console, and does not appear
>to get logged through
>klogd or syslogd, so I don't know exactly when it happens. It does fill up
>a console screen about once a week.
>
>This is happening on two servers, with two different NIC's one is a p90
>with an HP EISA 100VG card, and the other is a 486/66 with an HP 27247B
card.
>
>What does this error mean, what should it's effects be, and what do I do
>about it?
>
>--------------------------------------------------
>Sam Bayne -NT,Novell,HP-UX,Linux Sysadmin
>sbayne@nsccux.sccd.ctc.edu (206) 527-3762
>North Seattle Community College/Computing Services
>9600 College Way N/Seattle,WA 98133
>--------------------------------------------------
>
>
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