time, runtime: zero duration timer takes 2 minutes to fire [1.16 backport]

[gopherbot]

@ianlancetaylor requested issue #44868 to be considered for backport to the next 1.16 minor release.

@gopherbot Please open backport to 1.16.

This issue can cause timers to fire up to two minutes late.

[gopherbot]

Change https://golang.org/cl/300611 mentions this issue: [release-branch.go1.16] runtime, time: disable preemption in addtimer

[dmitshur]

Marking as a release-blocker for Go 1.16.3: we should consider this backport request and make a decision on it before issuing the next minor release.

[dmitshur]

Approving as a serious issue without a workaround. Only Go 1.16 needs this backport.

[gopherbot]

Closed by merging 0da04a6 to release-branch.go1.16.