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authorBhasker Hariharan <bhaskerh@google.com>2021-07-01 14:39:20 -0700
committergVisor bot <gvisor-bot@google.com>2021-07-01 14:42:00 -0700
commit570ca571805d6939c4c24b6a88660eefaf558ae7 (patch)
tree50b36e53b2b692a72dc135d3ec1aa3db58fb5b05 /tools/checklocks/test
parent3d4a8824f8e7aafdf6c1d18822b7593fa2e3e6bb (diff)
Fix bug with TCP bind w/ SO_REUSEADDR.
In gVisor today its possible that when trying to bind a TCP socket w/ SO_REUSEADDR specified and requesting the kernel pick a port by setting port to zero can result in a previously bound port being returned. This behaviour is incorrect as the user is clearly requesting a free port. The behaviour is fine when the user explicity specifies a port. This change now checks if the user specified a port when making a port reservation for a TCP port and only returns unbound ports even if SO_REUSEADDR was specified. Fixes #6209 PiperOrigin-RevId: 382607638
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