[release/1.6] metrics/cgroups: fix deadlock issue in Add during Collect#6801
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kzys merged 1 commit intocontainerd:release/1.6from Apr 11, 2022
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[release/1.6] metrics/cgroups: fix deadlock issue in Add during Collect#6801kzys merged 1 commit intocontainerd:release/1.6from
kzys merged 1 commit intocontainerd:release/1.6from
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The Collector.Collect will be the field ns'Collect's callback, which be invoked periodically with internal lock. And Collector.Add also runs with ns.Lock in Collector.Lock, which is easy to cause deadlock. Goroutine X: ns.Collect ns.Lock Collector.Collect Collector.RLock Goroutine Y: Collector.Add Collector.Lock ns.Lock We should use ns.Lock without Collector.Lock in Add. Fix: containerd#6772 Signed-off-by: Wei Fu <fuweid89@gmail.com> (cherry picked from commit 8a1280b) Signed-off-by: Wei Fu <fuweid89@gmail.com>
kzys
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Apr 11, 2022
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When do you plan 1.6.3 with the fix? |
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The Collector.Collect will be the field ns'Collect's callback, which be
invoked periodically with internal lock. And Collector.Add also runs
with ns.Lock in Collector.Lock, which is easy to cause deadlock.
Goroutine X:
Goroutine Y:
We should use ns.Lock without Collector.Lock in Add.
Fix: #6772
Signed-off-by: Wei Fu fuweid89@gmail.com
(cherry picked from commit 8a1280b)
Signed-off-by: Wei Fu fuweid89@gmail.com
🍒 from #6788
And updated
Statsmock interface because of the protobuf dependency.