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2020-11-16Merge release-20201109.0-51-gcc5cfce4c (automated)gVisor bot
2020-11-16Remove ARP address workaroundGhanan Gowripalan
- Make AddressableEndpoint optional for NetworkEndpoint. Not all NetworkEndpoints need to support addressing (e.g. ARP), so AddressableEndpoint should only be implemented for protocols that support addressing such as IPv4 and IPv6. With this change, tcpip.ErrNotSupported will be returned by the stack when attempting to modify addresses on a network endpoint that does not support addressing. Now that packets are fully handled at the network layer, and (with this change) addresses are optional for network endpoints, we no longer need the workaround for ARP where a fake ARP address was added to each NIC that performs ARP so that packets would be delivered to the ARP layer. PiperOrigin-RevId: 342722547
2020-11-16Merge release-20201109.0-49-g758e45618 (automated)gVisor bot
2020-11-16Clean up fragmentation.ProcessToshi Kikuchi
- Pass a PacketBuffer directly instead of releaseCB - No longer pass a VectorisedView, which is included in the PacketBuffer - Make it an error if data size is not equal to (last - first + 1) - Set the callback for the reassembly timeout on NewFragmentation PiperOrigin-RevId: 342702432
2020-11-16Merge release-20201109.0-48-ga73877ac9 (automated)gVisor bot
2020-11-16Automated rollback of changelist 342312166Bhasker Hariharan
PiperOrigin-RevId: 342700744
2020-11-16Merge release-20201109.0-47-g840a133c6 (automated)gVisor bot
2020-11-16Automated rollback of changelist 340274194Dean Deng
PiperOrigin-RevId: 342669574
2020-11-14Merge release-20201030.0-96-g182c12601 (automated)gVisor bot
2020-11-13Log task goroutine IDs in the sentry watchdog.Jamie Liu
PiperOrigin-RevId: 342373580
2020-11-14Merge release-20201030.0-95-g0fee59c8c (automated)gVisor bot
2020-11-13Requested Comment/Message wording changesJulian Elischer
PiperOrigin-RevId: 342366891
2020-11-13Merge release-20201030.0-94-ga1cb52447 (automated)gVisor bot
2020-11-13Check for misuse of kernel.Task as context.Context.Jamie Liu
Checks in Task.block() and Task.Value() are conditional on race detection being enabled, since these functions are relatively hot. Checks in Task.SleepStart() and Task.UninterruptibleSleepStart() are enabled unconditionally, since these functions are not thought to lie on any critical paths, and misuse of these functions is required for b/168241471 to manifest. PiperOrigin-RevId: 342342175
2020-11-13Merge release-20201030.0-93-g89517eca4 (automated)gVisor bot
2020-11-13Have fuse.DeviceFD hold reference on fuse.filesystem.Jamie Liu
This is actually just b/168751672 again; cl/332394146 was incorrectly reverted by cl/341411151. Document the reference holder to reduce the likelihood that this happens again. Also document a few other bugs observed in the process. PiperOrigin-RevId: 342339144
2020-11-13Merge release-20201030.0-92-g839dd9700 (automated)gVisor bot
2020-11-13RACK: Detect DSACKNayana Bidari
Detect if the ACK is a duplicate and update in RACK. PiperOrigin-RevId: 342332569
2020-11-13Merge release-20201030.0-91-g6c0f53002 (automated)gVisor bot
2020-11-13Decrement TTL/Hop Limit when forwarding IP packetsGhanan Gowripalan
If the packet must no longer be forwarded because its TTL/Hop Limit reaches 0, send an ICMP Time Exceeded error to the source. Required as per relevant RFCs. See comments in code for RFC references. Fixes #1085 Tests: - ipv4_test.TestForwarding - ipv6.TestForwarding PiperOrigin-RevId: 342323610
2020-11-13Merge release-20201030.0-89-g7fff51e50 (automated)gVisor bot
2020-11-13Refactor loss recovery in TCP.Nayana Bidari
The current implementation of loss recovery algorithms SACK and NewReno are in the same file(snd.go). The functions have multiple checks to see which one is currently used by the endpoint. This CL will refactor and separate the implementation of existing recovery algorithms which will help us to implement new recovery algorithms(such as RACK) with less changes to the existing code. There is no change in the behavior. PiperOrigin-RevId: 342312166
2020-11-13Automated rollback of changelist 341640485Dean Deng
PiperOrigin-RevId: 342297902
2020-11-13Merge release-20201030.0-87-g280cf4687 (automated)gVisor bot
2020-11-13Minor fdchannel fixes.Jamie Liu
- Don't close fdchannel.Endpoint.sockfd in Shutdown(), while it still may be in use. - Don't call runtime.enter/exitsyscall from RecvFDNonblock(). PiperOrigin-RevId: 342221770
2020-11-13Merge release-20201030.0-86-ge869e2c7c (automated)gVisor bot
2020-11-13fs/tmpfs: change regularFile.size atomicallyAndrei Vagin
PiperOrigin-RevId: 342221309
2020-11-13Merge release-20201030.0-85-gcc1b20590 (automated)gVisor bot
2020-11-13fs/tmpfs: use atomic operations to access inode.modeAndrei Vagin
PiperOrigin-RevId: 342214859
2020-11-13Merge release-20201030.0-83-g5bb64ce1b (automated)gVisor bot
2020-11-12Refactor SOL_SOCKET optionsNayana Bidari
Store all the socket level options in a struct and call {Get/Set}SockOpt on this struct. This will avoid implementing socket level options on all endpoints. This CL contains implementing one socket level option for tcp and udp endpoints. PiperOrigin-RevId: 342203981
2020-11-12Allow goid.Get() to be used outside of race builds.Jamie Liu
PiperOrigin-RevId: 342179912
2020-11-13Merge release-20201030.0-81-gcf47c8b4a (automated)gVisor bot
2020-11-12Improve shim debug loggingFabricio Voznika
- Add log statements in service entry points. - Propagate `-debug` flag from shim invokation to the service - Load options when shim process is invoked to ensure runsc commands use the correct set of options, e.g. --debug --debug-logs=... - Add debug options to the shim configuration directly, so it doesn't rely on containerd configuration (and restart) to enable shim debug. - Save shim logs to dedicated file, so it's easier to read logs. They would be mixed with containerd logs and hard to distinguish otherwise. PiperOrigin-RevId: 342179868
2020-11-13Merge release-20201030.0-80-g638d64c63 (automated)gVisor bot
2020-11-12Change AllocationSize to SizeWithPadding as requestedJulian Elischer
RELNOTES: n/a PiperOrigin-RevId: 342176296
2020-11-13Merge release-20201030.0-79-g62db1fad2 (automated)gVisor bot
2020-11-12Fix misuses of kernel.Task as context.Context.Jamie Liu
kernel.Task can only be used as context.Context by that Task's task goroutine. This is violated in at least two places: - In any case where one thread accesses the /proc/[tid] of any other thread, passing the kernel.Task for [tid] as the context.Context is incorrect. - Task.rebuildTraceContext() may be called by Kernel.RebuildTraceContexts() outside the scope of any task goroutine. Fix these (as well as a data race on Task.traceContext discovered during the course of finding the latter). PiperOrigin-RevId: 342174404
2020-11-12Add children names into verity hashChong Cai
children names map can be used to verify whether a child is expected during walking, so that we can detect unexpected modifications that deleted/renamed both the target file and the corresponding merkle tree file. PiperOrigin-RevId: 342170715
2020-11-13Merge release-20201030.0-77-gd700ba22a (automated)gVisor bot
2020-11-12Pad with a loop rather than a copy from an allocation.Julian Elischer
Add a unit test for ipv4.Encode and a round trip test. PiperOrigin-RevId: 342169517
2020-11-13Merge release-20201030.0-75-g468caff45 (automated)gVisor bot
2020-11-12Rename kernel.TaskContext to kernel.TaskImage.Jamie Liu
This reduces confusion with context.Context (which is also relevant to kernel.Tasks) and is consistent with existing function kernel.LoadTaskImage(). PiperOrigin-RevId: 342167298
2020-11-13Merge release-20201030.0-74-g1a972411b (automated)gVisor bot
2020-11-12Move packet handling to NetworkEndpointGhanan Gowripalan
The NIC should not hold network-layer state or logic - network packet handling/forwarding should be performed at the network layer instead of the NIC. Fixes #4688 PiperOrigin-RevId: 342166985
2020-11-13Merge release-20201030.0-73-gae7ab0a33 (automated)gVisor bot
2020-11-12Filter dentries with non-zero refs in VFS2 gofer/overlay checks.Jamie Liu
PiperOrigin-RevId: 342161204
2020-11-12Refactor merkletree testsChong Cai
Separate the test cases from TestVerify so that the test names reflect the test case better. PiperOrigin-RevId: 342152754
2020-11-12Merge release-20201030.0-70-gac62743e3 (automated)gVisor bot
2020-11-11Read fsimpl/tmpfs timestamps atomically.Jamie Liu
PiperOrigin-RevId: 341982672
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