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2021-02-18Merge release-20210208.0-69-gbb5db8044 (automated)gVisor bot
2021-02-18Remove deprecated NUD types Failed and FailedEntryLookupsSam Balana
Completes the soft migration to Unreachable state by removing the Failed state and the the FailedEntryLookups StatCounter. Fixes #4667 PiperOrigin-RevId: 358226380
2021-02-18Merge release-20210208.0-65-g1fc2c5f75 (automated)gVisor bot
2021-02-17Move Name() out of netstack Matcher. It can live in the sentry.Kevin Krakauer
PiperOrigin-RevId: 358078157
2021-02-18Merge release-20210208.0-64-gf051ec646 (automated)gVisor bot
2021-02-17Add gohacks.Slice/StringHeader.Jamie Liu
See https://github.com/golang/go/issues/19367 for rationale. Note that the upstream decision arrived at in that thread, while useful for some of our use cases, doesn't account for all of our SliceHeader use cases (we often use SliceHeader to extract pointers from slices in a way that avoids bounds checking and/or handles nil slices correctly) and also doesn't exist yet. PiperOrigin-RevId: 358071574
2021-02-17Merge release-20210208.0-63-g4bc7daf91 (automated)gVisor bot
2021-02-17Check for directory emptiness in VFS1 overlay rmdir().Jamie Liu
Note that this CL reorders overlayEntry.copyMu before overlayEntry.dirCacheMu in the overlayFileOperations.IterateDir() => readdirEntries() path - but this lock ordering is already required by overlayRemove/Bind() => overlayEntry.markDirectoryDirty(), so this actually just fixes an inconsistency. PiperOrigin-RevId: 358047121
2021-02-17[infra] Split tcpip/integration test targets to aid investigation.Ayush Ranjan
tcpip integration tests have been flaky lately. They usually run in 20 seconds and have a 60 seconds timeout. Sometimes they timeout which could be due to a bug or deadlock. To further investigate it might be helpful to split the targets and see which test is causing the flake. Added a new tcpip/tests/utils package to hold all common utilities across all tests. PiperOrigin-RevId: 358012936
2021-02-12Fix bug with iperf and don't profile runc.Zach Koopmans
Fix issue with iperf where b.N wasn't changing across runs. Also, if the given runtime is runc/not given, don't run a profile against it. PiperOrigin-RevId: 357231450
2021-02-12Merge release-20210208.0-52-g845d0a65f (automated)gVisor bot
2021-02-11[rack] TLP: ACK Processing and PTO scheduling.Ayush Ranjan
This change implements TLP details enumerated in https://tools.ietf.org/html/draft-ietf-tcpm-rack-08#section-7.5.3 Fixes #5085 PiperOrigin-RevId: 357125037
2021-02-12Merge release-20210201.0-92-g34614c398 (automated)gVisor bot
2021-02-11Unconditionally check for directory-ness in overlay.filesystem.UnlinkAt().Jamie Liu
PiperOrigin-RevId: 357106080
2021-02-12Merge release-20210201.0-91-g91cf7b3ca (automated)gVisor bot
2021-02-11[netstack] Fix recovery entry and exit checks.Ayush Ranjan
Entry check: - Earlier implementation was preventing us from entering recovery even if SND.UNA is lost but dupAckCount is still below threshold. Fixed that. - We should only enter recovery when at least one more byte of data beyond the highest byte that was outstanding when fast retransmit was last entered is acked. Added that check. Exit check: - Earlier we were checking if SEG.ACK is in range [SND.UNA, SND.NXT]. The intention was to check if any unacknowledged data was ACKed. Note that (SEG.ACK - 1) is actually the sequence number which was ACKed. So we were incorrectly including (SND.UNA - 1) in the range. Fixed the check to now be (SEG.ACK - 1) in range [SND.UNA, SND.NXT). Additionally, moved a RACK specific test to the rack tests file. Added tests for the changes I made. PiperOrigin-RevId: 357091322
2021-02-12Merge release-20210201.0-90-g4314bb0b2 (automated)gVisor bot
2021-02-11Internal change.gVisor bot
PiperOrigin-RevId: 357090170
2021-02-12Merge release-20210201.0-89-gc39284f45 (automated)gVisor bot
2021-02-11Let sentry understand tcpip.ErrMalformedHeaderKevin Krakauer
Added a LINT IfChange/ThenChange check to catch this in the future. PiperOrigin-RevId: 357077564
2021-02-11Merge release-20210201.0-87-gc833eed80 (automated)gVisor bot
2021-02-11Implement semtimedop.Jing Chen
PiperOrigin-RevId: 357031904
2021-02-11Merge release-20210201.0-86-gae8d966f5 (automated)gVisor bot
2021-02-11Assign controlling terminal when tty is opened and support NOCTTYKevin Krakauer
PiperOrigin-RevId: 357015186
2021-02-11Merge release-20210201.0-84-g81ea0016e (automated)gVisor bot
2021-02-10Support setgid directories in tmpfs and kernfsKevin Krakauer
PiperOrigin-RevId: 356868412
2021-02-11Merge release-20210201.0-83-gff04d019e (automated)gVisor bot
2021-02-10RACK: Fix re-transmitting the segment twice when entering recovery.Nayana Bidari
TestRACKWithDuplicateACK is flaky as the reorder window can expire before receiving three duplicate ACKs which will result in sending the first unacknowledged segment twice: when reorder timer expired and again after receiving the third duplicate ACK. This CL will fix this behavior and will not resend the segment again if it was already re-transmittted when reorder timer expired. Update the TestRACKWithDuplicateACK to test that the first segment is considered as lost and is re-transmitted. PiperOrigin-RevId: 356855168
2021-02-11Merge release-20210201.0-82-g97a36d169 (automated)gVisor bot
2021-02-10Don't allow to umount the namespace root mountAndrei Vagin
Linux does the same thing. Reported-by: syzbot+6c79385c930c929d1d9e@syzkaller.appspotmail.com PiperOrigin-RevId: 356854562
2021-02-11Merge release-20210201.0-81-g96d3b3188 (automated)gVisor bot
2021-02-10Fix broken IFTTT link in tcpip.Ayush Ranjan
PiperOrigin-RevId: 356852625
2021-02-10Merge release-20210201.0-75-gb9db7db3b (automated)gVisor bot
2021-02-10Merge pull request #5267 from lubinszARM:pr_usr_lazy_fpgVisor bot
PiperOrigin-RevId: 356762859
2021-02-10Merge release-20210201.0-72-g298c129cc (automated)gVisor bot
2021-02-09Add support for setting SO_SNDBUF for unix domain sockets.Bhasker Hariharan
The limits for snd/rcv buffers for unix domain socket is controlled by the following sysctls on linux - net.core.rmem_default - net.core.rmem_max - net.core.wmem_default - net.core.wmem_max Today in gVisor we do not expose these sysctls but we do support setting the equivalent in netstack via stack.Options() method. But AF_UNIX sockets in gVisor can be used without netstack, with hostinet or even without any networking stack at all. Which means ideally these sysctls need to live as globals in gVisor. But rather than make this a big change for now we hardcode the limits in the AF_UNIX implementation itself (which in itself is better than where we were before) where it SO_SNDBUF was hardcoded to 16KiB. Further we bump the initial limit to a default value of 208 KiB to match linux from the paltry 16 KiB we use today. Updates #5132 PiperOrigin-RevId: 356665498
2021-02-10Merge release-20210201.0-70-gf6de413c3 (automated)gVisor bot
2021-02-09Add cleanup TODO for integer-based proc files.Dean Deng
PiperOrigin-RevId: 356645022
2021-02-09Merge release-20210201.0-67-g18e993eb4 (automated)gVisor bot
2021-02-09Move network internal code to internal packageGhanan Gowripalan
Utilities written to be common across IPv4/IPv6 are not planned to be available for public use. https://golang.org/doc/go1.4#internalpackages PiperOrigin-RevId: 356554862
2021-02-09Merge release-20210201.0-66-gd0c0549e6 (automated)gVisor bot
2021-02-09Deprecate Failed state in favor of Unreachable stateSam Balana
... as per RFC 7048. The Failed state is an internal state that is not specified by any RFC; replacing it with the Unreachable state enables us to expose this state while keeping our terminology consistent with RFC 4861 and RFC 7048. Unreachable state replaces all internal references for Failed state. However unlike the Failed state, change events are dispatched when moving into Unreachable state. This gives developers insight into whether a neighbor entry failed address resolution or whether it was explicitly removed. The Failed state will be removed entirely once all references to it are removed. This is done to avoid a Fuchsia roll failure. Updates #4667 PiperOrigin-RevId: 356554104
2021-02-09Merge release-20210201.0-65-g2b978d874 (automated)gVisor bot
2021-02-09Collapse code that always returns errorTamir Duberstein
PiperOrigin-RevId: 356536548
2021-02-09Merge release-20210201.0-64-gfe4f47896 (automated)gVisor bot
2021-02-09kernel: reparentLocked has to update children maps of old and new parentsAndrei Vagin
Reported-by: syzbot+9ffc71246fe72c73fc25@syzkaller.appspotmail.com PiperOrigin-RevId: 356536113
2021-02-09Merge release-20210201.0-63-gd6dbe6e5c (automated)gVisor bot
2021-02-09pipe: writeLocked has to return ErrWouldBlock if the pipe is fullAndrei Vagin
PiperOrigin-RevId: 356450303
2021-02-09Merge release-20210201.0-62-g3f802e718 (automated)gVisor bot
2021-02-09add IPv4 options processing for forwarding and reassemblyJulian Elischer
IPv4 forwarding and reassembly needs support for option processing and regular processing also needs options to be processed before being passed to the transport layer. This patch extends option processing to those cases and provides additional testing. A small change to the ICMP error generation API code was required to allow it to know when a packet was being forwarded or not. Updates #4586 PiperOrigin-RevId: 356446681
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