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authorGhanan Gowripalan <ghanan@google.com>2020-09-16 14:54:40 -0700
committergVisor bot <gvisor-bot@google.com>2020-09-16 14:56:52 -0700
commit29ce0ad1603316b8a12102e23bfa5942acf63b14 (patch)
tree34831beaa1be65bf6c7bec125ae6c85814638a48 /images/basic/tmpfile
parent3749e70a693007b706fb06529ab95d910a251ba6 (diff)
Bind loopback subnets' lifetime to perm address
The lifetime of addreses in a loopback interface's associated subnets should be bound to their respective permanent addresses. This change also fixes a race when the stack attempts to get an IPv4 rereferencedNetworkEndpoint for an address in an associated subnet on a loopback interface. Before this change, the stack would only check if an IPv4 address is contained in an associated subnet while holding a read lock but wouldn't do this same check after releasing the read lock for a write lock to create a temporary address. This may cause the stack to bind the lifetime of the address to a new (temporary) endpoint instead of the associated subnet's permanent address. Test: integration_test.TestLoopbackSubnetLifetimeBoundToAddr PiperOrigin-RevId: 332094719
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