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Bug 1237301

Summary: blkmapd: Fix infinite loop when reading serial
Product: Red Hat Enterprise Linux 7 Reporter: Steve Dickson <steved>
Component: nfs-utilsAssignee: Steve Dickson <steved>
Status: CLOSED ERRATA QA Contact: Yongcheng Yang <yoyang>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.2CC: eguan, fs-qe
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: nfs-utils-1.3.0-0.13.el7 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-11-19 04:29:58 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Steve Dickson 2015-06-30 18:20:57 UTC
Description of problem:

If (dev_id->ids & 0xf) < current_id, must updates pos when continue.
Otherwise an infinite loop.

No other places use the pos value, just move to the top of while.

Additional info:
Upstream patch that fixes the bug:

commit c6b8191374d9ad064eb96423400a6314c2d0102e
Author: Kinglong Mee <kinglongmee>
Date:   Tue Jun 30 14:12:38 2015 -0400

    blkmapd: Fix infinite loop when reading serial
    
    If (dev_id->ids & 0xf) < current_id, must updates pos when continue.
    Otherwise an infinite loop.
    
    No other places use the pos value, just move to the top of while.
    
    Signed-off-by: Kinglong Mee <kinglongmee>
    Signed-off-by: Steve Dickson <steved>

Comment 3 Yongcheng Yang 2015-09-14 06:48:18 UTC
Since there is no obvious reproducer, set "SanityOnly" 

Finish regression test and move to VERIFIED

Comment 4 errata-xmlrpc 2015-11-19 04:29:58 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2196.html