e82d152e66
The current usage of sync.Pool is leaky because it stores an arbitrary sized buffer into the pool. However, sync.Pool assumes that all items in the pool are interchangeable from a memory cost perspective. Due to the unbounded size of a buffer that may be added, it is possible for the pool to eventually pin arbitrarily large amounts of memory in a live-lock situation. As a simple fix, we just set a maximum size that we permit back into the pool. We do not need to fix the use of a sync.Pool in scan.go since the free method has always enforced a maximum capacity since the first commit of the scan logic. Fixes #27740 Updates #23199 Change-Id: I875278f7dba42625405df36df3e9b028252ce5e3 Reviewed-on: https://go-review.googlesource.com/136116 Reviewed-by: Bryan C. Mills <bcmills@google.com> Run-TryBot: Bryan C. Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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