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2020-10-08Send unicast probes when link address is knownGhanan Gowripalan
When the neighbor table already has link address for a neighbor but is trying to confirm reachability, it may send unicast probes to the neighbor. PiperOrigin-RevId: 336166711
2020-10-08Minor nogo cleanup.Adin Scannell
PiperOrigin-RevId: 336126583
2020-10-08Improve multi-arch support.Adin Scannell
This change allows Dockerfiles named Dockerfile.$(ARCH) and makes list-images list only supported architectures. Updates #2847 PiperOrigin-RevId: 336108293
2020-10-08Change IPv6 reassembly timeout to 60sArthur Sfez
It was originally set to 30s for IPv6 (same as IPv4) but this is not what RFC 8200 prescibes. Linux also defaults to 60s [1]. [1] https://github.com/torvalds/linux/blob/47ec5303d73ea344e84f46660fff693c57641386/include/net/ipv6.h#L456 PiperOrigin-RevId: 336034636
2020-10-07Add staticcheck and staticstyle analyzers.Adin Scannell
This change also adds support to go_stateify for detecting an appropriate receiver name, avoiding a large number of false positives. PiperOrigin-RevId: 335994587
2020-10-07Internal change.gVisor bot
PiperOrigin-RevId: 335960488
2020-10-07Merge pull request #4376 from lubinszARM:pr_usr_tls_newgVisor bot
PiperOrigin-RevId: 335930035
2020-10-07[runtime-tests] Exclude failing test due to expired cert.Ayush Ranjan
PiperOrigin-RevId: 335927821
2020-10-07Add precise synchronization to KVM.Adin Scannell
By using TSC scaling as a hack, we can trick the kernel into setting an offset of exactly zero. Huzzah! PiperOrigin-RevId: 335922019
2020-10-07Fix text processing in bazel build command.Dean Deng
The extraction of the build target was overfitted before, making build_cmd fail in some environments. PiperOrigin-RevId: 335916651
2020-10-06Discard invalid Neighbor SolicitationsPeter Johnston
...per RFC 4861 s7.1.1. PiperOrigin-RevId: 335742851
2020-10-06Add support for IPv6 fragmentationArthur Sfez
Most of the IPv4 fragmentation code was moved in the fragmentation package and it is reused by IPv6 fragmentation. Test: - pkg/tcpip/network/ipv4:ipv4_test - pkg/tcpip/network/ipv6:ipv6_test - pkg/tcpip/network/fragmentation:fragmentation_test Fixes #4389 PiperOrigin-RevId: 335714280
2020-10-06Merge pull request #4355 from majek:marek/swallow-SO_RCVBUFFORCE-errorgVisor bot
PiperOrigin-RevId: 335714100
2020-10-06Implement membarrier(2) commands other than *_SYNC_CORE.Jamie Liu
Updates #267 PiperOrigin-RevId: 335713923
2020-10-06Fix typo in merkletreegVisor bot
PiperOrigin-RevId: 335709552
2020-10-06Merge pull request #3150 from wietsevenema:patch-2gVisor bot
PiperOrigin-RevId: 335702168
2020-10-06[vfs2] Don't leak reference from Mountnamespace.Root().Dean Deng
PiperOrigin-RevId: 335583637
2020-10-05Fix IPv4 ICMP echo handler to copy optionsJulian Elischer
The IPv4 RFCs are specific (though obtuse) that an echo response packet needs to contain all the options from the echo request, much as if it been routed back to the sender, though apparently with a new TTL. They suggest copying the incoming packet header to achieve this so that is what this patch does. PiperOrigin-RevId: 335559176
2020-10-05Simplify nil assignment in kcov.Dean Deng
PiperOrigin-RevId: 335548610
2020-10-05Fix gofer monitor prematurely destroying containerFabricio Voznika
When all container tasks finish, they release the mount which in turn will close the 9P session to the gofer. The gofer exits when the connection closes, triggering the gofer monitor. The gofer monitor will _think_ that the gofer died prematurely and destroy the container. Then when the caller attempts to wait for the container, e.g. to get the exit code, wait fails saying the container doesn't exist. Gofer monitor now just SIGKILLs the container, and let the normal teardown process to happen, which will evetually destroy the container at the right time. Also, fixed an issue with exec racing with container's init process exiting. Closes #1487 PiperOrigin-RevId: 335537350
2020-10-05Merge pull request #4079 from lemin9538:arm64_fixgVisor bot
PiperOrigin-RevId: 335532690
2020-10-05Merge pull request #3970 from benbuzbee:gomaxprocsgVisor bot
PiperOrigin-RevId: 335516972
2020-10-05Enable more VFS2 testsFabricio Voznika
Updates #1487 PiperOrigin-RevId: 335516732
2020-10-05Remove reference to deleted scriptKevin Krakauer
PiperOrigin-RevId: 335516625
2020-10-05Merge pull request #4368 from zhlhahaha:1979gVisor bot
PiperOrigin-RevId: 335492800
2020-10-05Remove AssignableAddressEndpoint.NetworkEndpointGhanan Gowripalan
We can get the network endpoint directly from the NIC. This is a preparatory CL for when a Route needs to hold a dedicated NIC as its output interface. This is because when forwarding is enabled, packets may be sent from a NIC different from the NIC a route's local address is associated with. PiperOrigin-RevId: 335484500
2020-10-05Internal change.gVisor bot
PiperOrigin-RevId: 335429072
2020-10-03Fix kcov enabling and disabling procedures.Dean Deng
- When the KCOV_ENABLE_TRACE ioctl is called with the trace kind KCOV_TRACE_PC, the kcov mode should be set to KCOV_*MODE*_TRACE_PC. - When the owning task of kcov exits, the memory mapping should not be cleared so it can be used by other tasks. - Add more tests (also tested on native Linux kcov). PiperOrigin-RevId: 335202585
2020-10-02Merge pull request #4377 from avagin:kvm-if-flaggVisor bot
PiperOrigin-RevId: 335122704
2020-10-02tools/checkescape: trim the "(SB)" before searching it in the allowed listAndrei Vagin
Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-10-02kvm/x86: handle a case when interrupts are enabled in the kernel spaceAndrei Vagin
Before we thought that interrupts are always disabled in the kernel space, but here is a case when goruntime switches on a goroutine which has been saved in the host mode. On restore, the popf instruction is used to restore flags and this means that all flags what the goroutine has in the host mode will be restored in the kernel mode. And in the host mode, interrupts are always enabled. The long story short, we can't use the IF flag for determine whether a tasks is running in user or kernel mode. This patch reworks the code so that in userspace, the first bit of the IOPL flag will be always set. This doesn't give any new privilidges for a task because CPL in userspace is always 3. But then we can use this flag to distinguish user and kernel modes. The IOPL flag is never set in the kernel and host modes. Reported-by: syzbot+5036b325a8eb15c030cf@syzkaller.appspotmail.com Reported-by: syzbot+034d580e89ad67b8dc75@syzkaller.appspotmail.com Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-10-02Save addresses for "allowed" functions.Adin Scannell
PiperOrigin-RevId: 335086850
2020-10-02Convert uses of the binary package in kernel to go-marshal.Rahat Mahmood
PiperOrigin-RevId: 335077195
2020-10-02Actually disable nodejs test parallel/test-fs-write-stream-double-close.Jamie Liu
PiperOrigin-RevId: 335070320
2020-10-02Update minimum RTT for RACK.Nayana Bidari
We are currently tracking the minimum RTT for RACK as smoothed RTT. As per RFC minimum RTT can be a global minimum of all RTTs or filtered value of recent RTT measurements. In this cl minimum RTT is updated to global minimum of all RTTs for the connection. PiperOrigin-RevId: 335061518
2020-10-02Merge pull request #4035 from lubinszARM:pr_misc_01gVisor bot
PiperOrigin-RevId: 335051794
2020-10-01Add a verity test for modified parent Merkle fileChong Cai
When a child's root hash or its Merkle path is modified in its parent's Merkle tree file, opening the file should fail, provided the directory is verity enabled. The test for this behavior is added. PiperOrigin-RevId: 334963690
2020-09-30Merge pull request #3824 from btw616:fix/issue-3823gVisor bot
PiperOrigin-RevId: 334721453
2020-09-30Ensure proctor is built as pure Go binary.Adin Scannell
PiperOrigin-RevId: 334716351
2020-09-30ip6tables: redirect supportKevin Krakauer
Adds support for the IPv6-compatible redirect target. Redirection is a limited form of DNAT, where the destination is always the localhost. Updates #3549. PiperOrigin-RevId: 334698344
2020-09-30Count IP OutgoingPacketErrors in the NetworkEndpoint methodsArthur Sfez
Before this change, OutgoingPacketErrors was incremented in the stack.Route methods. This was going to be a problem once IPv4/IPv6 WritePackets support fragmentation because Route.WritePackets might now know how many packets are left after an error occurs. Test: - pkg/tcpip/network/ipv4:ipv4_test - pkg/tcpip/network/ipv6:ipv6_test PiperOrigin-RevId: 334687983
2020-09-30Implement ioctl with measure in verity fsChong Cai
PiperOrigin-RevId: 334682753
2020-09-30Internal change.Chong Cai
PiperOrigin-RevId: 334678513
2020-09-30Merge pull request #2256 from laijs:kptigVisor bot
PiperOrigin-RevId: 334674481
2020-09-30Use consistent thread configuration for sandbox go runtimeBen Buzbee
With cgroups configured NumCPU is correct, however GOMAXPROCS is still derived from total host core count and ignores cgroup restrictions. This can lead to different and undesired behavior across different hosts. For example, the total number of threads in the guest process will be larger on machines with more cores. This change configures the go runtime for the sandbox to only use the number of threads consistent with its restrictions.
2020-09-30Use the ICMP error response facilityJulian Elischer
Add code in IPv6 to send ICMP packets while processing extension headers. Add some accounting in processing IPV6 Extension headers which allows us to report meaningful information back in ICMP parameter problem packets. IPv4 also needs to send a message when an unsupported protocol is requested. Add some tests to generate both ipv4 and ipv6 packets with various errors and check the responses. Add some new checkers and cleanup some inconsistencies in the messages in that file. Add new error types for the ICMPv4/6 generators. Fix a bug in the ICMPv4 generator that stopped it from generating "Unknown protocol" messages. Updates #2211 PiperOrigin-RevId: 334661716
2020-09-30[go-marshal] Port ext codebase to use go marshal.Ayush Ranjan
PiperOrigin-RevId: 334656292
2020-09-30Make all Target.Action implementation pointer receiversKevin Krakauer
PiperOrigin-RevId: 334652998
2020-09-30Add verity fs testsChong Cai
The tests confirms that when a file is opened in verity, the corresponding Merkle trees are generated. Also a normal read succeeds on verity enabled files, but fails if either the verity file or the Merkle tree file is modified. PiperOrigin-RevId: 334640331
2020-09-29Set transport protocol number during parsingKevin Krakauer
PiperOrigin-RevId: 334535896
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