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runtime: channel send can write to sleeping goroutine's stack #11116

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rsc opened this issue Jun 8, 2015 · 1 comment
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runtime: channel send can write to sleeping goroutine's stack #11116

rsc opened this issue Jun 8, 2015 · 1 comment
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@rsc
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rsc commented Jun 8, 2015

A send on an unbuffered channel to a blocked receiver writes directly to the receiver's stack. This violates the assumption made by the garbage collector that all writes to a stack happen while the receiver is executing and go through write barriers. This causes missed writes and incorrect collection of data.
@rsc rsc self-assigned this Jun 8, 2015
@rsc rsc added this to the Go1.5 milestone Jun 8, 2015
@rsc rsc mentioned this issue Jun 8, 2015
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Fixed by 80ec711.

@golang golang locked and limited conversation to collaborators Jun 25, 2016
@rsc rsc removed their assignment Jun 23, 2022
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