Bug 9709 – kernel tries to exec zero-length file

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Bug 9709 - kernel tries to exec zero-length file

Summary:	kernel tries to exec zero-length file

Status:	CLOSED RAWHIDE

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	modutils (Show other bugs)
Sub Component:
Version:	6.1
Hardware:	All Linux

Priority	medium Severity medium
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Assigned To:	Michael K. Johnson
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Reported:	2000-02-23 07:38 EST by Jonathan Kamens
Modified:	2008-05-01 11:37 EDT (History)
CC List:	0 users

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Doc Type:	Bug Fix
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Last Closed:	2000-09-14 19:57:04 EDT
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Description Jonathan Kamens 2000-02-23 07:38:51 EST

Create a zero-length file.  Make it executable.

Modify /etc/syslog.conf to log *.debug into a file.  Create the empty log
file and send a HUP to syslogd.

Try to execute the zero-length file.  In your debug syslog log file, you'll
see, "modprobe: modprobe: Can't locate module binfmt-0000".

The kernel should not be trying to load a module to execute an empty file.

Comment 1 Alan Cox 2000-09-14 19:57:01 EDT

Its an interesting question since there is no kernel problem with leavign this
allowed. I suspect someone should by default 'alias binfmt-0000 off'

Comment 2 Bill Nottingham 2001-07-06 18:33:54 EDT

will be done in 2.4.6-1.

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