OS X 10.8 iotop and DTrace not working when iTunes is running

Originator:jon
Number:rdar://12667382 Date Originated:08-Nov-2012 05:35 PM
Status:Duplicate/8492723 Resolved:
Product:OS X Product Version:10.8.2
Classification:Crash/Hang/Data loss Reproducible:Always
 
08-Nov-2012 05:35 PM Jon Stacey:
Summary:
The `iotop` command on OX X 10.8 does not function properly if the iTunes application is open at the same time. 

Steps to Reproduce:
First, open iTunes. Next, open terminal and at the prompt run `sudo iotop`.

Expected Results:
I expect iotop to run properly and list the applications that are using the hard drive.

Actual Results:
iotop will error out with the message:

dtrace: error on enabled probe ID 5 (ID 992: io:mach_kernel:buf_strategy:start): invalid user access in action #3 at DIF offset 0

Regression:

Notes:

08-Nov-2012 05:35 PM Jon Stacey:
'iMac.spx' was successfully uploaded

Comments

Close as Duplicate of 8492723

This is a follow up to Bug ID# 12667382. This bug has been closed as a Duplicate. The issue is being tracked under the original Bug ID# 8492723 which is also listed in the Related Problem section of your bug report. To check the status of the original bug report, please visit the Related Problem section of the Problem Detail view of your closed duplicate bug.

By jon at Nov. 14, 2012, 4:47 a.m. (reply...)

Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!