Bug 41858 - deadlock upon client disconnection
Summary: deadlock upon client disconnection
Status: RESOLVED FIXED
Alias: None
Product: Spice
Classification: Unclassified
Component: server (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Spice Bug List
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Reported: 2011-10-17 01:28 UTC by Yonit Halperin
Modified: 2014-11-03 02:02 UTC (History)
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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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