Fix race condition in GetCurrentNS #523
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This was referenced Aug 21, 2020
In GetCurrentNS, If there is a context-switch between getCurrentThreadNetNSPath and GetNS, another goroutine may execute in the original thread and change its network namespace, then the original goroutine would get the updated network namespace, which could lead to unexpected behavior, especially when GetCurrentNS is used to get the host network namespace in netNS.Do. The added test has a chance to reproduce it with "-count=50". The patch fixes it by locking the thread in GetCurrentNS. Signed-off-by: Quan Tian <[email protected]>
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/lgtm |
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Agreed. test failures are windows |
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In GetCurrentNS, If there is a context-switch between
getCurrentThreadNetNSPath and GetNS, another goroutine may execute in
the original thread and change its network namespace, then the original
goroutine would get the updated network namespace, which could lead to
unexpected behavior, especially when GetCurrentNS is used to get the
host network namespace in netNS.Do.
The added test has a chance to reproduce it with "-count=50".
The patch fixes it by locking the thread in GetCurrentNS.
Fixes #524