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2021-03-25Merge release-20210315.0-27-g79bc446fa (automated)gVisor bot
2021-03-25Lock TaskSet mutex for writing in ptraceClone().Jamie Liu
This is necessary since ptraceClone() mutates tracer.ptraceTracees. PiperOrigin-RevId: 365152396
2021-03-24Merge release-20210315.0-23-ge7ca2a51a (automated)gVisor bot
2021-03-24Add POLLRDNORM/POLLWRNORM support.Bhasker Hariharan
On Linux these are meant to be equivalent to POLLIN/POLLOUT. Rather than hack these on in sys_poll etc it felt cleaner to just cleanup the call sites to notify for both events. This is what linux does as well. Fixes #5544 PiperOrigin-RevId: 364859977
2021-03-24Fix data race in fdbased when accessing fanoutID.Bhasker Hariharan
PiperOrigin-RevId: 364859173
2021-03-24Merge release-20210315.0-21-gec0aa657e (automated)gVisor bot
2021-03-24Unexpose immutable fields in stack.RouteNick Brown
This change sets the inner `routeInfo` struct to be a named private member and replaces direct access with access through getters. Note that direct access to the fields of `routeInfo` is still possible through the `RouteInfo` struct. Fixes #4902 PiperOrigin-RevId: 364822872
2021-03-24Merge release-20210315.0-20-g8ee4a3f6d (automated)gVisor bot
2021-03-23Merge pull request #5677 from avagin:kvm-mmiogVisor bot
PiperOrigin-RevId: 364728696
2021-03-24Merge release-20210315.0-18-g56a9a1397 (automated)gVisor bot
2021-03-23Move the code that manages floating-point state to a separate packageAndrei Vagin
This change is inspired by Adin's cl/355256448. PiperOrigin-RevId: 364695931
2021-03-23Merge release-20210315.0-16-g92374e519 (automated)gVisor bot
2021-03-23setgid directory support in goferfsKevin Krakauer
Also adds support for clearing the setuid bit when appropriate (writing, truncating, changing size, changing UID, or changing GID). VFS2 only. PiperOrigin-RevId: 364661835
2021-03-23Merge release-20210315.0-15-gacb4c6288 (automated)gVisor bot
2021-03-23Use constant (TestInitialSequenceNumber) instead of integer (789) in tests.Nayana Bidari
PiperOrigin-RevId: 364596526
2021-03-23Merge release-20210315.0-11-g409a11445 (automated)gVisor bot
2021-03-23Explicitly allow martian loopback packetsGhanan Gowripalan
...instead of opting out of them. Loopback traffic should be stack-local but gVisor has some clients that depend on the ability to receive loopback traffic that originated from outside of the stack. Because of this, we guard this change behind IP protocol options. A previous change provided the facility to deny these martian loopback packets but this change requires client to opt-in to accepting martian loopback packets as accepting martian loopback packets are not meant to be accepted, as per RFC 1122 section 3.2.1.3.g: (g) { 127, <any> } Internal host loopback address. Addresses of this form MUST NOT appear outside a host. PiperOrigin-RevId: 364581174
2021-03-23Merge release-20210315.0-9-gc0bd71c5a (automated)gVisor bot
2021-03-22Fix logs for packetimpact tests cleanupZeling Feng
- Don't cleanup containers in Network.Cleanup, otherwise containers will be killed and removed several times. - Don't set AutoRemove for containers. This will prevent the confusing 'removal already in progress' messages. Fixes #3795 PiperOrigin-RevId: 364404414
2021-03-22Merge release-20210315.0-7-ga073d7697 (automated)gVisor bot
2021-03-22Return tcpip.Error from (*Stack).GetMainNICAddressGhanan Gowripalan
PiperOrigin-RevId: 364381970
2021-03-22Merge release-20210315.0-6-g6bd2c6ce7 (automated)gVisor bot
2021-03-22Merge release-20210315.0-5-gb428fd02e (automated)gVisor bot
2021-03-22Avoid calling sync on each write in writethrough mode.Nicolas Lacasse
PiperOrigin-RevId: 364370595
2021-03-18Merge release-20210309.0-41-g7fac7e32f (automated)gVisor bot
2021-03-18Translate syserror when validating partial IO errorsFabricio Voznika
syserror allows packages to register translators for errors. These translators should be called prior to checking if the error is valid, otherwise it may not account for possible errors that can be returned from different packages, e.g. safecopy.BusError => syserror.EFAULT. Second attempt, it passes tests now :-) PiperOrigin-RevId: 363714508
2021-03-17Do not use martian loopback packets in testsGhanan Gowripalan
Transport demuxer and UDP tests should not use a loopback address as the source address for packets injected into the stack as martian loopback packets will be dropped in a later change. PiperOrigin-RevId: 363479681
2021-03-17Merge release-20210309.0-37-g4065604e1 (automated)gVisor bot
2021-03-17Drop loopback traffic from outside of the stackGhanan Gowripalan
Loopback traffic should be stack-local but gVisor has some clients that depend on the ability to receive loopback traffic that originated from outside of the stack. Because of this, we guard this change behind IP protocol options. Test: integration_test.TestExternalLoopbackTraffic PiperOrigin-RevId: 363461242
2021-03-16kvm: prefault a floating point state before restoring itAndrei Vagin
If physical pages of a memory region are not mapped yet, the kernel will trigger KVM_EXIT_MMIO and we will map physical pages in bluepillHandler(). An instruction that triggered a fault will not be re-executed, it will be emulated in the kernel, but it can't emulate complex instructions like xsave, xrstor. We can touch the memory with simple instructions to workaround this problem.
2021-03-17Merge release-20210309.0-36-g3dd7ad13b (automated)gVisor bot
2021-03-16Fix tcp_fin_retransmission_netstack_testZeling Feng
Netstack does not check ACK number for FIN-ACK packets and goes into TIMEWAIT unconditionally. Fixing the state machine will give us back the retransmission of FIN. PiperOrigin-RevId: 363301883
2021-03-16Merge release-20210309.0-35-g5eede4e75 (automated)gVisor bot
2021-03-16Fix a race with synRcvdCount and acceptMithun Iyer
There is a race in handling new incoming connections on a listening endpoint that causes the endpoint to reply to more incoming SYNs than what is permitted by the listen backlog. The race occurs when there is a successful passive connection handshake and the synRcvdCount counter is decremented, followed by the endpoint delivered to the accept queue. In the window of time between synRcvdCount decrementing and the endpoint being enqueued for accept, new incoming SYNs can be handled without honoring the listen backlog value, as the backlog could be perceived not full. Fixes #5637 PiperOrigin-RevId: 363279372
2021-03-16Merge release-20210309.0-34-g607a1e481 (automated)gVisor bot
2021-03-16setgid directory support in overlayfsKevin Krakauer
PiperOrigin-RevId: 363276495
2021-03-16Merge release-20210309.0-33-g05193de1c (automated)gVisor bot
2021-03-16Unexport methods on NDPOptionGhanan Gowripalan
They are not used outside of the header package. PiperOrigin-RevId: 363237708
2021-03-16Merge release-20210309.0-32-g68065d1ce (automated)gVisor bot
2021-03-16Detect looped-back NDP DAD messagesGhanan Gowripalan
...as per RFC 7527. If a looped-back DAD message is received, do not fail DAD since our own DAD message does not indicate that a neighbor has the address assigned. Test: ndp_test.TestDADResolveLoopback PiperOrigin-RevId: 363224288
2021-03-16Merge release-20210309.0-31-gebd7c1b88 (automated)gVisor bot
2021-03-16Do not call into Stack from LinkAddressRequestGhanan Gowripalan
Calling into the stack from LinkAddressRequest is not needed as we already have a reference to the network endpoint (IPv6) or network interface (IPv4/ARP). PiperOrigin-RevId: 363213973
2021-03-16Merge release-20210309.0-30-gf7e841c2c (automated)gVisor bot
2021-03-15Turn sys_thread constants into variables.Etienne Perot
PiperOrigin-RevId: 363092268
2021-03-16Merge release-20210309.0-29-gf4b742182 (automated)gVisor bot
2021-03-15Move `MaxIovs` back to a variable in `iovec.go`.Etienne Perot
PiperOrigin-RevId: 363091954
2021-03-16Merge release-20210309.0-27-gb1d578772 (automated)gVisor bot
2021-03-15Make netstack (//pkg/tcpip) buildable for 32 bitKevin Krakauer
Doing so involved breaking dependencies between //pkg/tcpip and the rest of gVisor, which are discouraged anyways. Tested on the Go branch via: gvisor.dev/gvisor/pkg/tcpip/... Addresses #1446. PiperOrigin-RevId: 363081778
2021-03-15Merge release-20210309.0-26-gec45d9692 (automated)gVisor bot
2021-03-15[op] Make gofer client handle return partial write length when err is nil.Ayush Ranjan
If there was a partial write (when not using the host FD) which did not generate an error, we were incorrectly returning the number of bytes attempted to write instead of the number of bytes actually written. PiperOrigin-RevId: 363058989
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