Bug 763568 (GLUSTER-1836)

Summary:	server is hung in infinite loop while trying to search for an actor during request processing
Product:	[Community] GlusterFS	Reporter:	Raghavendra G <raghavendra>
Component:	protocol	Assignee:	Raghavendra G <raghavendra>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	low
Version:	mainline	CC:	amarts, gluster-bugs
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Raghavendra G 2010-10-06 13:08:48 UTC

Test: after starting server, send SIGHUP to server process and run ls on mountpoint.

Server process is hung executing an infinite loop in rpcsvc_program_actor. Traversal of List storing registering programs is resulting in an infinite loop.

Cause: list_add_tail is done on same list_head object more than once. This happens since we are adding global program structures into svc registered program list and when SIGHUP is sent the graph is reinitialized and rpcsvc_program_register is called for second time on a program object that is already in list of registered programs.

Comment 1 Vijay Bellur 2010-10-07 02:17:21 UTC

PATCH: http://patches.gluster.com/patch/5322 in master (rpcsvc: allocate a new program structure before registering it.)