Bug 826684

Summary: Recursive Event Generation Deadlock in Broker
Product: Red Hat Enterprise MRG Reporter: Ted Ross <tross>
Component: qpid-cppAssignee: Ken Giusti <kgiusti>
Status: NEW --- QA Contact: MRG Quality Engineering <mrgqe-bugs>
Severity: high Docs Contact:
Priority: medium    
Version: 2.1CC: jross, kgiusti
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 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:
Attachments:
Description Flags
pstack from the broker process none

Description Ted Ross 2012-05-30 18:40:43 UTC
Description of problem:

Deadlock occurred between two threads in the broker.  A queue message lock was involved so any other thread that tried to access that same queue also became locked.

Version-Release number of selected component (if applicable):

qpid-cpp-0.14-16.el5

How reproducible:

Unknown - likely very rare

Steps to Reproduce:

No reproducer currently.

Comment 1 Ted Ross 2012-05-30 18:42:59 UTC
Created attachment 587806 [details]
pstack from the broker process

Comment 2 Ted Ross 2012-05-30 18:44:52 UTC
I'm assuming that the deadlock occurs between threads 1 and 18 in the pstack.