Bug 113808 - modutils and cat /proc/modules deadlock (I think)
Summary: modutils and cat /proc/modules deadlock (I think)
Keywords:
Status: CLOSED RAWHIDE
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: athlon
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brian Brock
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2004-01-18 17:06 UTC by Eric Hopper
Modified: 2007-11-30 22:10 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2004-04-19 03:41:30 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Eric Hopper 2004-01-18 17:06:10 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040115

Description of problem:
I have these process:

[root@monster root]# ps --width=2000 -f -p 9302,9303,9301,9368,17188,3
UID        PID  PPID  C STIME TTY          TIME CMD
root         3     1  0 Jan17 ?        00:00:00 [events/0]
root      9301     1  0 00:36 ?        00:00:00 rmmod parport_pc parport
root      9302     3  0 00:36 ?        00:00:00 [events/0]
root      9303  9302  0 00:36 ?        00:00:00 /sbin/modprobe -q --
parport_lowlevel
root      9368  9314  0 00:37 pts/3    00:00:00 lsmod
root     17188 17138  0 08:35 pts/6    00:00:00 cat /proc/modules

9301,9303, and 17188 are all hung.  rmmod has been hung for at least 8
hours.

I believe that what happened is that I ran rmmod and the system ran
modprobe at the same time, and they are deadlocked.  I'm not sure of
this though.

I'm going to reboot now, and this problem may never show itself again.
 But, I thought I should report it when it did.


Version-Release number of selected component (if applicable):
kernel-2.6.1-1.43
modutils-2.4.26-2

How reproducible:
Didn't try


Additional info:

Comment 1 Warren Togami 2004-04-19 03:41:30 UTC
This was probably fixed a long time ago.


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