Bug 316501

Summary: file hugging cpu
Product: [Fedora] Fedora Reporter: Hubert Lin <hubertwslin>
Component: fileAssignee: Tomas Smetana <tsmetana>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhide   
Target Milestone: ---   
Target Release: ---   
Hardware: i686   
OS: Linux   
Whiteboard:
Fixed In Version: 4.21-5.fc8 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-02-02 08:59:46 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
the file that fails the *file* util none

Description Hubert Lin 2007-10-03 07:41:58 UTC 
Description of problem:

While testing the file type with the file attached, the process hugs the cpu and
never returned.

Version-Release number of selected component (if applicable):
file-4.21-1.fc6

How reproducible:
Always.

Steps to Reproduce:
1. file e5f5fdb10c8bb35d3219a87516147e15.exe
  
Actual results:
The process never exits, which CPU hugging.

Expected results:
Shows file type info.

Additional info:
The file size attached is less than 1 MB, and is infected by
Trojan.Downloader.Small-1444 (scanned by ClamAV).
Comment 1 Hubert Lin 2007-10-03 07:41:59 UTC 
Created attachment 214381 [details]
the file that fails the *file* util
Comment 2 Tomas Smetana 2007-12-11 08:10:55 UTC 
Reproduced.  I'll take a look at it.  Thanks for reporting.
Comment 3 Tomas Smetana 2007-12-11 08:11:48 UTC 
And changed version to rawhide, so the bug doesn't get closed automatically.
Comment 4 Tomas Smetana 2008-01-16 12:36:44 UTC 
The process exits -- it's only extremely slow:
e5f5fdb10c8bb35d3219a87516147e15.exe: PE32 executable for MS Windows (GUI) Intel
80386 32-bit

The problem is in the regexec function provided by glibc.  Unfortunately I can't
reproduce the problem anywhere else but in the file binary.  I've tried to take
the exect regular expression that seems to cause the problem but no luck.  If I
reproduce it I may file a bug on glibc.  If not, I'll try to rewrite the regular
expression to it's equivalent and see whether that helps.
Comment 5 Tomas Smetana 2008-01-29 08:46:06 UTC 
Fixed in 4.23-1.fc9.  Will push also update for F-8.
Comment 6 Fedora Update System 2008-01-29 09:15:39 UTC 
file-4.21-5.fc8 has been submitted as an update for Fedora 8
Comment 7 Fedora Update System 2008-02-02 08:59:44 UTC 
file-4.21-5.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 Hubert Lin 2008-02-03 10:32:29 UTC 
Just verified it's fixed in file-4.21-5.fc8.
Thanks.