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2020-03-13Merge release-20200219.0-167-gb78cee3 (automated)gVisor bot
2020-03-13Fix lock recursion in kernel.ProcessGroup.SendSignal().Jamie Liu
PiperOrigin-RevId: 300803515
2020-03-13Merge release-20200219.0-164-g2e38408 (automated)gVisor bot
2020-03-13Implement access/faccessat for VFS2.Dean Deng
Note that the raw faccessat system call does not actually take a flags argument; according to faccessat(2), the glibc wrapper implements the flags by using fstatat(2). Remove the flag argument that we try to extract from vfs1, which would just be a garbage value. Updates #1965 Fixes #2101 PiperOrigin-RevId: 300796067
2020-03-13Merge release-20200219.0-163-gf458a32 (automated)gVisor bot
2020-03-13Fix "application exiting with {Code:0 Signo:27}" during boot.Ting-Yu Wang
2aa9514a06a5e34894e606d508ac2df53b082c74 skips SIGURG, but later code expects the sigchans array contains consecutive signal numbers. PiperOrigin-RevId: 300793450
2020-03-13Merge release-20200219.0-162-g28d26d2 (automated)gVisor bot
2020-03-13Honour the link's MaxHeaderLength when forwardingGhanan Gowripalan
LinkEndpoints may expect/assume that the a tcpip.PacketBuffer's Header has enough capacity for its own headers, as per documentation for LinkEndpoint.MaxHeaderLength. Test: stack_test.TestNICForwarding PiperOrigin-RevId: 300784192
2020-03-13Merge release-20200219.0-161-g8f8f16e (automated)gVisor bot
2020-03-13Add support for mount flagsFabricio Voznika
Plumbs MS_NOEXEC and MS_RDONLY. Others are TODO. Updates #1623 #1193 PiperOrigin-RevId: 300764669
2020-03-13Merge release-20200219.0-160-gf693e13 (automated)gVisor bot
2020-03-12Clarify comments about IHL in ipv4.go.Eyal Soha
PiperOrigin-RevId: 300668506
2020-03-12Mark gonet_test as flaky.Zach Koopmans
Mark /pkg/tcpip/adapters/gonet/gonet_test as flaky. PiperOrigin-RevId: 300609529
2020-03-12Merge release-20200219.0-156-g035f743 (automated)gVisor bot
2020-03-11Use a heap in transport demuxerTamir Duberstein
...instead of sorting at various times. Plug a memory leak by setting removed elements to nil. PiperOrigin-RevId: 300471087
2020-03-12Merge release-20200219.0-155-gac05043 (automated)gVisor bot
2020-03-11Implement heap.Interface on pointer receiverTamir Duberstein
PiperOrigin-RevId: 300467253
2020-03-12Merge release-20200219.0-154-g538e35f (automated)gVisor bot
2020-03-11Fix race condition (*tcp.endpoint).CloseTamir Duberstein
Atomically close the endpoint. Before this change, it was possible for multiple callers to perform duplicate work. PiperOrigin-RevId: 300462110
2020-03-12Merge release-20200219.0-153-g61051f2 (automated)gVisor bot
2020-03-11Clean-up buffer implementation.Adin Scannell
This also adds substantial test cases. The Read/Write interfaces are dropped as they are not necessary. PiperOrigin-RevId: 300461547
2020-03-12Merge release-20200219.0-150-g81675b8 (automated)gVisor bot
2020-03-11Fix memory leak in danglingEndpoints.Bhasker Hariharan
Endpoints which were being terminated in an ERROR state or were moved to CLOSED by the worker goroutine do not run cleanupLocked() as that should already be run by the worker termination. But when making that change we made the mistake of not removing the endpoint from the danglingEndpoints which is normally done in cleanupLocked(). As a result these endpoints are leaked since a reference is held to them in the danglingEndpoints array forever till Stack is torn down. PiperOrigin-RevId: 300438426
2020-03-11Merge release-20200219.0-147-g22d89ef (automated)gVisor bot
2020-03-11Import "unsafe" in bluepill_arm64_unsafe.goAndrei Vagin
This fixes a compile time error: pkg/sentry/platform/kvm/bluepill_arm64_unsafe.go:45:35: undefined: unsafe PiperOrigin-RevId: 300375687
2020-03-11Merge release-20200219.0-145-g2c2622b (automated)gVisor bot
2020-03-11Merge pull request #1975 from nybidari:iptablesgVisor bot
PiperOrigin-RevId: 300362789
2020-03-11Merge release-20200219.0-138-g2aa9514 (automated)gVisor bot
2020-03-11runsc: don't redirect SIGURG which is used by Go's runtime schedulerAndrei Vagin
Go 1.14+ sends SIGURG to Ms to attempt asynchronous preemption of a G. Since it can't guarantee that a SIGURG is only related to preemption, it continues to forward them to signal.Notify (see runtime.sighandler). When runsc is running a container, there are three processes: a parent process and two children (sandbox and gopher). A parent process sets a signal handler for all signals and redirect them to the container init process. This logic should ignore SIGURG signals. We already ignore them in the Sentry, but it will be better to not notify about them when this is possible. PiperOrigin-RevId: 300345286
2020-03-11Merge release-20200219.0-137-g7bca091 (automated)gVisor bot
2020-03-11Automated rollback of changelist 300217972gVisor bot
PiperOrigin-RevId: 300308974
2020-03-11Merge release-20200219.0-136-g24e7005 (automated)gVisor bot
2020-03-11Merge pull request #1832 from xiaobo55x:tls_ptracegVisor bot
PiperOrigin-RevId: 300270894
2020-03-11Merge release-20200219.0-134-gf56fe66 (automated)gVisor bot
2020-03-10Honour the link's MaxHeaderLength when forwardingGhanan Gowripalan
This change also updates where the IP packet buffer is held in an outbound tcpip.PacketBuffer from Header to Data. This change removes unncessary copying of the IP packet buffer when forwarding. Test: stack_test.TestNICForwarding PiperOrigin-RevId: 300217972
2020-03-10Merge release-20200219.0-133-gd6440ec (automated)gVisor bot
2020-03-10The packet forwarding should resolve the link address if necessary.gVisor bot
Fixes #1510 Test: - stack_test.TestForwardingWithStaticResolver - stack_test.TestForwardingWithFakeResolver - stack_test.TestForwardingWithNoResolver - stack_test.TestForwardingWithFakeResolverPartialTimeout - stack_test.TestForwardingWithFakeResolverTwoPackets - stack_test.TestForwardingWithFakeResolverManyPackets - stack_test.TestForwardingWithFakeResolverManyResolutions PiperOrigin-RevId: 300182570
2020-03-10Merge release-20200219.0-131-gb36de6e (automated)gVisor bot
2020-03-09Move /proc/net to /proc/PID/net, and make /proc/net -> /proc/self/net.Ting-Yu Wang
Issue #1833 PiperOrigin-RevId: 299998105
2020-03-09Enable thread local storage support on arm64.Haibo Xu
Linux use the task.thread.uw.tp_value field to store the TLS pointer on arm64 platform, and we use a similar way in gvisor to store it in the arch/State struct. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: Ie76b5c6d109bc27ccfd594008a96753806db7764
2020-03-06Merge release-20200219.0-124-g228813f (automated)gVisor bot
2020-03-06Update comments and debug level for profiling options.Dean Deng
PiperOrigin-RevId: 299448307
2020-03-06Merge release-20200219.0-123-g960f6a9 (automated)gVisor bot
2020-03-06Add plumbing for importing fds in VFS2, along with non-socket, non-TTY impl.Dean Deng
In VFS2, imported file descriptors are stored in a kernfs-based filesystem. Upon calling ImportFD, the host fd can be accessed in two ways: 1. a FileDescription that can be added to the FDTable, and 2. a Dentry in the host.filesystem mount, which we will want to access through magic symlinks in /proc/[pid]/fd/. An implementation of the kernfs.Inode interface stores a unique host fd. This inode can be inserted into file descriptions as well as dentries. This change also plumbs in three FileDescriptionImpls corresponding to fds for sockets, TTYs, and other files (only the latter is implemented here). These implementations will mostly make corresponding syscalls to the host. Where possible, the logic is ported over from pkg/sentry/fs/host. Updates #1672 PiperOrigin-RevId: 299417263
2020-03-06Merge release-20200219.0-122-g6fa5cee (automated)gVisor bot
2020-03-06Prevent memory leaks in ilistTamir Duberstein
When list elements are removed from a list but not discarded, it becomes important to invalidate the references they hold to their former neighbors to prevent memory leaks. PiperOrigin-RevId: 299412421
2020-03-06Merge release-20200219.0-121-g18d41cf (automated)gVisor bot
2020-03-06Merge pull request #1963 from xiaobo55x:kvm_commongVisor bot
PiperOrigin-RevId: 299405855
2020-03-06Merge release-20200219.0-119-g56c4272 (automated)gVisor bot
2020-03-06Merge pull request #1946 from xiaobo55x:dieTrampgVisor bot
PiperOrigin-RevId: 299405663
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