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Bug 119330 - /proc/acpi/event unreadable
/proc/acpi/event unreadable
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Dave Jones
Brian Brock
Depends On:
Blocks: FC2Target FC3Target FC4Target
  Show dependency treegraph
Reported: 2004-03-29 11:10 EST by Dan Williams
Modified: 2015-01-04 17:05 EST (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-11-18 22:42:54 EST
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Dan Williams 2004-03-29 11:10:43 EST
On two FC2 Test 2 machines, /proc/acpi/event is unreadable, which
means that acpid cannot start.  root cannot 'cat /proc/acpi/event',
which returns:

/bin/cat: /proc/acpi/event: Device or resource busy

and acpid also complains that it cannot open /proc/acpi/event. 
Therefore, acpid does not start.  This happens regardless of whether
SELinux is in enforcing mode or not.
Comment 1 Arjan van de Ven 2004-03-29 12:17:47 EST
anything in dmesg re acpi ?
does it work with selinux=0 ?
Comment 2 Sahil Verma 2004-03-30 03:45:10 EST
What is the output of ps -ef | grep `fuser /proc/acpi/event | awk
'{print $2}'`
Comment 3 Dan Williams 2004-03-30 11:35:19 EST
selinux=0 kernel panics (attempt to kill init)  I'm attempting to yum
upgrade to find out.

kernel version is: 2.6.3-
Comment 4 Bill Nottingham 2004-07-21 11:44:50 EDT
Does this work in current trees?
Comment 5 Dan Williams 2004-07-21 12:07:11 EDT
Its still broken.  Doing a 'sudo cat /proc/acpi/event' still returns
busy.  The fuser/awk thing also doesn't work, as fuser
/proc/acpi/event | awk ... returns nothing, hence grep has nothing to

Kernel 2.6.7-1.488smp
Comment 6 Dave Jones 2004-11-18 22:42:54 EST
you need to talk to acpid.  the event file can only be opened exclusively, and
acpid stole it already.

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