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authorDave Barach <dbarach@cisco.com>2017-12-15 12:22:57 -0500
committerJohn Lo <loj@cisco.com>2017-12-15 22:32:11 +0000
commit2877eee189993dbd1b9a5c3d22499930a4768786 (patch)
tree7c106163b2595a06441c329a2781537929296bc9 /src/plugins
parent891f0a1caa795ed7799f0c6faa1cb91b4669d4da (diff)
VPP-1102: fix dangling references in RPC handling
Queue RPC calls and send them from the main dispatch loop. As things stood, if the vpp main input queue filled, worker threads could enter a barrier-sync spin-wait in the middle of processing a frame. If thread 0 decided to recreate worker thread data structures, the worker thread(s) could easily crash. Legislate the problem out of existence by enqueueing RPC messages only from the main dispatch loop. At that point, doing a barrier-sync wait is perfectly OK. Change-Id: I18da3e44bb1f29a63fe5f30cf11de732ecfd5bf7 Signed-off-by: Dave Barach <dave@barachs.net>
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