Bug 41858

Summary:	deadlock upon client disconnection
Product:	Spice	Reporter:	Yonit Halperin <yhalperi>
Component:	server	Assignee:	Spice Bug List <spice-bugs>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Yonit Halperin 2011-10-17 01:28:46 UTC

When the display/cursor channel disconnect, channel_event (qemu/ui/spice_core.c)
attempts to lock the iothread (see qemu patch "spice: workaround a spice server bug").
However, when refactoring spice-server channels to use RedChannel and to support multiple clients, the disconnection of the display/cursor channel via red_dispatcher was change to be synchronous.
Thus, when the disconnection of the display/cursor channel is triggered from the iothread, deadlock occurs, and qemu is stack.

Comment 1 Marc-Andre Lureau 2014-11-03 02:02:51 UTC

I think this is long solved by the introduction of async io, closing

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