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2021-02-04Call kernfs.syntheticDir.InitRefs() on creation.Nicolas Lacasse
PiperOrigin-RevId: 355675900
2021-02-04images: Rework syzkaller documentation.Andrei Vagin
PiperOrigin-RevId: 355660221
2021-02-04Fix flaky packetimpact testNayana Bidari
PiperOrigin-RevId: 355645297
2021-02-04[infra] Do not recompile integration test executables each time.Ayush Ranjan
Instead build the executable into the image. PiperOrigin-RevId: 355631672
2021-02-03[vfs] Make sticky bit check consistent with Linux.Ayush Ranjan
Our implementation of vfs.CheckDeleteSticky was not consistent with Linux, specifically not consistent with fs/linux.h:check_sticky(). One of the biggest differences was that the vfs implementation did not allow the owner of the sticky directory to delete files inside it that belonged to other users. This change makes our implementation consistent with Linux. Also adds an integration test to check for this. This bug is also present in VFS1. Updates #3027 PiperOrigin-RevId: 355557425
2021-02-03Compile-time constants are constexprTamir Duberstein
PiperOrigin-RevId: 355506299
2021-02-03Remove gazelle noise patchTamir Duberstein
Confirmed gazelle generates no significant noise. Fix documented gazelle invocation while I'm here. PiperOrigin-RevId: 355452758
2021-02-03Merge pull request #5352 from weisdd:patch-1gVisor bot
PiperOrigin-RevId: 355449206
2021-02-03Add a function to enable RACK in tests.Nayana Bidari
- Adds a function to enable RACK in tests. - RACK update functions are guarded behind the flag tcpRecovery. PiperOrigin-RevId: 355435973
2021-02-03Merge pull request #5418 from amscanne:codespacegVisor bot
PiperOrigin-RevId: 355434313
2021-02-02Merge pull request #5373 from oke-py:docsgVisor bot
PiperOrigin-RevId: 355324521
2021-02-02Make ubuntutest image x86 only.Ayush Ranjan
PiperOrigin-RevId: 355315140
2021-02-02Update go-tools to 2020.2.1Tamir Duberstein
...and a bunch of other things as I worked through the rot. Notably: - Upgrade to bazel 4.0.0 - Upgrade to Go 1.15.7 Remove go_branch stderr suppression; this made it quite difficult to see what was failing while developing this patch. PiperOrigin-RevId: 355257833
2021-02-02Remove call to Notify from pipe.VFSPipeFD.CopyOutFrom.Jamie Liu
This was missed in cl/351911375; pipe.VFSPipeFD.SpliceFromNonPipe already calls Notify. PiperOrigin-RevId: 355246655
2021-02-02Add CPUSet for runsc mitigate.Zach Koopmans
PiperOrigin-RevId: 355242055
2021-02-02Rename HandleNDupAcks in TCP.Nayana Bidari
Rename HandleNDupAcks() to HandleLossDetected() as it will enter this when is detected after: - reorder window expires and TLP (in case of RACK) - dupAckCount >= 3 PiperOrigin-RevId: 355237858
2021-02-02Stub out basic `runsc events --stat` CPU functionalityKevin Krakauer
Because we lack gVisor-internal cgroups, we take the CPU usage of the entire pod and divide it proportionally according to sentry-internal usage stats. This fixes `kubectl top pods`, which gets a pod's CPU usage by summing the usage of its containers. Addresses #172. PiperOrigin-RevId: 355229833
2021-02-02Move ring0 package.Adin Scannell
This allows the package to serve as a general purpose ring0 support package, as opposed to being bound to specific sentry platforms. Updates #5039 PiperOrigin-RevId: 355220044
2021-02-02Add ETIMEDOUT to partial result listFabricio Voznika
Reported-by: syzbot+db8d83f93b84fcb84374@syzkaller.appspotmail.com PiperOrigin-RevId: 355213994
2021-02-02Drop gazelle target from the Makefile.Adin Scannell
This is replaced with a straight call to bazel. Unfortunately, the built gazelle target requires a bazel installation to run anyways. PiperOrigin-RevId: 355211990
2021-02-02Add support for rate limiting out of window ACKs.Bhasker Hariharan
Netstack today will send dupACK's with no rate limit for incoming out of window segments. This can result in ACK loops for example if a TCP socket connects to itself (actually permitted by TCP). Where the ACK sent in response to packets being out of order itself gets considered as an out of window segment resulting in another ACK being generated. PiperOrigin-RevId: 355206877
2021-02-02Remove go_tool_library references.Adin Scannell
This is required only for the built-in bazel nogo functionality. Since we roll these targets manually via the wrappers, we don't need to use go_tool_library. The inconsistent use of these targets leads to conflicting instantiations of go_default_library and go_tool_library, which both contain the same output files. PiperOrigin-RevId: 355184975
2021-02-02Assert TCP_INFO size before checking contentTamir Duberstein
Also sync syscall test expectations on Fuchisa. PiperOrigin-RevId: 355163492
2021-02-02Minor page tables improvements.Adin Scannell
* Make split safe. * Enable looking up next valid address. * Support mappings with !accessType.Any(), distinct from unmap. These changes allow for the use of pagetables in low-level OS packages, such as ring0, and allow for the use of pagetables for more generic address space reservation (by writing entries with no access specified). Updates #5039 PiperOrigin-RevId: 355109016
2021-02-01Fix empty Packages file for APT repository.Adin Scannell
This change also adds an extra sanity check to the make_apt.sh script, in order to ensure that this simple mistake does not occur again. PiperOrigin-RevId: 355101754
2021-02-01Enable container checkpoint/restore tests with VFS2Fabricio Voznika
Updates #1663 PiperOrigin-RevId: 355077816
2021-02-01Add RACK reorder tests.Nayana Bidari
PiperOrigin-RevId: 355067082
2021-02-01Remove Go cache on failure.Adin Scannell
It's unclear why permissions wind up corrupted, but these can be cleared on any failure, similar to the bazel cache itself: https://buildkite.com/gvisor/pipeline/builds/2304#_ PiperOrigin-RevId: 355057421
2021-02-01Merge pull request #5403 from avagin:syzkaller3gVisor bot
PiperOrigin-RevId: 355047815
2021-02-01[infra] Consolidate all ubuntu tests into one image.Ayush Ranjan
This makes it easier to add more tests that run on Ubuntu. We can now just add a bash script and call that from integration_test without having to set up another image. PiperOrigin-RevId: 355000410
2021-02-01Ignore convenience symlink.Adin Scannell
2021-02-01Update .devcontainer.jsonAdin Scannell
Provide appropriate capabilities and adjust Docker socket.
2021-02-01Add basic VSCode plumbing.Adin Scannell
2021-02-01Refactor HandleControlPacket/SockErrorGhanan Gowripalan
...to remove the need for the transport layer to deduce the type of error it received. Rename HandleControlPacket to HandleError as HandleControlPacket only handles errors. tcpip.SockError now holds a tcpip.SockErrorCause interface that different errors can implement. PiperOrigin-RevId: 354994306
2021-02-01[infra] Fix gazelle target.Ayush Ranjan
PiperOrigin-RevId: 354991724
2021-02-01Assert expected size before unmarshallingTamir Duberstein
...to prevent panicking in case of failure. PiperOrigin-RevId: 354970257
2021-01-31Default to NUD/neighborCache instead of linkAddrCacheGhanan Gowripalan
This change flips gvisor to use Neighbor unreachability detection by default to populate the neighbor table as defined by RFC 4861 section 7. Although RFC 4861 is targeted at IPv6, the same algorithm is used for link resolution on IPv4 networks using ARP. Integrators may still use the legacy link address cache by setting stack.Options.UseLinkAddrCache to true; stack.Options.UseNeighborCache is now unused and will be removed. A later change will remove linkAddrCache and associated code. Updates #4658. PiperOrigin-RevId: 354850531
2021-01-31Use closure for IPv6 testContext cleanupGhanan Gowripalan
PiperOrigin-RevId: 354827491
2021-01-31Remove NICs before closing their link endpointsGhanan Gowripalan
...in IPv6 ICMP tests. A channel link endpoint's channel is closed when the link endpoint is closed. When the stack tries to send packets through a NIC with a closed channel endpoint, a panic will occur when attempting to write to a closed channel (https://golang.org/ref/spec#Close). To make sure the stack does not try to send packets through a NIC, we remove it. PiperOrigin-RevId: 354822085
2021-01-31Use different neighbor tables per network endpointGhanan Gowripalan
This stores each protocol's neighbor state separately. This change also removes the need for each neighbor entry to keep track of their own link address resolver now that all the entries in a cache will use the same resolver. PiperOrigin-RevId: 354818155
2021-01-31Hide neighbor table kind from NetworkEndpointGhanan Gowripalan
The network endpoint should not need to have logic to handle different kinds of neighbor tables. Network endpoints can let the NIC know about differnt neighbor discovery messages and let the NIC decide which table to update. This allows us to remove the LinkAddressCache interface. PiperOrigin-RevId: 354812584
2021-01-30Extract route table from Stack lockTamir Duberstein
PiperOrigin-RevId: 354746864
2021-01-30Remove side effect from open testsFabricio Voznika
Individual test cases must not rely on being executed in a clean environment. PiperOrigin-RevId: 354730126
2021-01-30Implement LinkAddressResolver on NetworkEndpointsGhanan Gowripalan
This removes the need to provide the link address request with the NIC the request is being performed on since the NetworkEndpoints already have a reference to the NIC. PiperOrigin-RevId: 354721940
2021-01-29Add syzkaller docker imageAndrei Vagin
2021-01-29Make fragmentation return a reassembled PacketBufferTing-Yu Wang
This allows later decoupling of the backing network buffer implementation. PiperOrigin-RevId: 354643297
2021-01-29Clear IGMPv1 present flag on NIC downGhanan Gowripalan
This is dynamic state that can be re-learned when the NIC comes back up. Test: ipv4_test.TestIgmpV1Present PiperOrigin-RevId: 354630921
2021-01-29setgid directory syscall testsKevin Krakauer
PiperOrigin-RevId: 354615220
2021-01-29Remove side effect from test casesFabricio Voznika
Individual test cases must not rely on being executed in a clean environment. PiperOrigin-RevId: 354604389
2021-01-29Refresh delayed report timers on query messagesGhanan Gowripalan
...as per As per RFC 2236 section 3 page 3 (for IGMPv2) and RFC 2710 section 4 page 5 (for MLDv1). See comments in code for more details. Test: ip_test.TestHandleQuery PiperOrigin-RevId: 354603068
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