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authorJamie Liu <jamieliu@google.com>2020-10-30 13:52:38 -0700
committergVisor bot <gvisor-bot@google.com>2020-10-30 13:54:47 -0700
commit9ad864628dc3f36a24a5eb6a51d7e13471598517 (patch)
treeeb747d6bede6dd733339adb58d04cb41b36023ef /tools/go_marshal/BUILD
parentc94bf137da809551f2ccdaec061576eb98cceb67 (diff)
Separate kernel.Task.AsCopyContext() into CopyContext() and OwnCopyContext().
kernel.copyContext{t} cannot be used outside of t's task goroutine, for three reasons: - t.CopyScratchBuffer() is task-goroutine-local. - Calling t.MemoryManager() without running on t's task goroutine or locking t.mu violates t.MemoryManager()'s preconditions. - kernel.copyContext passes t as context.Context to MM IO methods, which is illegal outside of t's task goroutine (cf. kernel.Task.Value()). Fix this by splitting AsCopyContext() into CopyContext() (which takes an explicit context.Context and is usable outside of the task goroutine) and OwnCopyContext() (which uses t as context.Context, but is only usable by t's task goroutine). PiperOrigin-RevId: 339933809
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