Subject: port-sparc/17207: audioamd interrupt counts are insane
To: None <>
From: Ben Harris <>
List: netbsd-bugs
Date: 06/10/2002 22:45:33
>Number:         17207
>Category:       port-sparc
>Synopsis:       audioamd interrupt counts are insane
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-sparc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Jun 10 14:46:01 PDT 2002
>Originator:     Ben Harris
>Release:        1.6_BETA1
1.6_BETA1 GENERIC kernel from the snapshot.

NetBSD 1.6_BETA1 (GENERIC) #0: Sat Jun  8 05:30:35 UTC 2002
total memory = 16304 KB
avail memory = 12240 KB
using 128 buffers containing 512 KB of memory
bootpath: /sbus0/le0
mainbus0 (root): Sun 4/20
cpu0 at mainbus0: MB86900/1A or L64801 @ 20 MHz, WTL3170/2 FPU
cpu0: 64K byte write-through, 16 bytes/line, sw flush: cache enabled
audioamd0 at mainbus0 ioaddr 0xf7201000 ipl 13 softpri 4
audio0 at audioamd0: full duplex

The "audioamd" driver seems to return completely wild interrupt counts.
For instance, on my machine "vmstat -i" claims:

audioamd0 intr                       39530878992384 5135881381

This is after cat'ing a <8 KB file to /dev/audio.  Before that, the counts
read zero.

$ vmstat -iv
[ audioamd0 should show 0 ]
$ cat /usr/bin/id > /dev/audio
[ noise ]
$ vmstat -iv
[ audioamd0 shows stupidly-high number ]