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2020-06-18Enable more VFS2 syscall testsFabricio Voznika
Updates #2923 PiperOrigin-RevId: 317185798
2020-06-18Remove various uses of 'whitelist'Michael Pratt
Updates #2972 PiperOrigin-RevId: 317113059
2020-06-18Support setsockopt SO_SNDBUF/SO_RCVBUF for raw/udp sockets.Bhasker Hariharan
Updates #173,#6 Fixes #2888 PiperOrigin-RevId: 317087652
2020-06-17Add TempTmpMount testFabricio Voznika
This currently doesn't work with VSF2. Add test to ensure it's not missed. Updates #1487 PiperOrigin-RevId: 317013792
2020-06-17Move mount configutation to RunOptsFabricio Voznika
Separate mount configuration from links and move it to RunOpts, like the other options. PiperOrigin-RevId: 317010158
2020-06-17Add test for stat("/proc/net/snmp").Ian Gudger
PiperOrigin-RevId: 316974863
2020-06-17Proc test: Allow root mount pathname to be non-root.Nicolas Lacasse
The test was expecting that the root mount pathname was "/", but it doesn't need to be. Only the mount point actually should be "/" (otherwise it is not the root). PiperOrigin-RevId: 316968025
2020-06-17Fix TtlDefault test on linux.Bhasker Hariharan
Different flavors of linux seem to use different defaults we accept 64 or 127 as the TtlDefault in the test. PiperOrigin-RevId: 316961150
2020-06-17Remove various uses of 'blacklist'Michael Pratt
Updates #2972 PiperOrigin-RevId: 316942245
2020-06-17Implement POSIX locksFabricio Voznika
- Change FileDescriptionImpl Lock/UnlockPOSIX signature to take {start,length,whence}, so the correct offset can be calculated in the implementations. - Create PosixLocker interface to make it possible to share the same locking code from different implementations. Closes #1480 PiperOrigin-RevId: 316910286
2020-06-17Fix typos in test/README.md.Nicolas Lacasse
Closes #2996. PiperOrigin-RevId: 316900535
2020-06-15TCP to honor updated window size during handshake.Mithun Iyer
In passive open cases, we transition to Established state after initializing endpoint's sender and receiver. With this we lose out on any updates coming from the ACK that completes the handshake. This change ensures that we uniformly transition to Established in all cases and does minor cleanups. Fixes #2938 PiperOrigin-RevId: 316567014
2020-06-15Remove blacklist from //test/runtimesMichael Pratt
Updates #2972 PiperOrigin-RevId: 316534165
2020-06-15Internal change.Martijn Vels
PiperOrigin-RevId: 316492839
2020-06-15Correctly set the test VFS environment variable.Rahat Mahmood
Also fix test bugs uncovered now that they aren't silently skipped on VFS2. Updates #1487. PiperOrigin-RevId: 316415807
2020-06-12Allow reading IP_MULTICAST_LOOP and IP_MULTICAST_TTL on TCP sockets.Ian Gudger
I am not really sure what the point of this is, but someone filed a bug about it, so I assume something relies on it. PiperOrigin-RevId: 316225127
2020-06-12Make GenerateRandomPayload available to all testsTony Gong
Moved the function for generating a payload of random byets of a specified length into the testbench package so that it's availbale for all tests to use. Added a test case to the IPv4 ID uniqueness test which uses a payload length of 512 bytes. This test case passes for gVisor currently, whereas the test case with a small payload of 11 bytes fails because gVisor only assigns the ID field if the IP payload is sufficiently large. PiperOrigin-RevId: 316185097
2020-06-12vfs2: implement fcntl(fd, F_SETFL, flags)Andrei Vagin
PiperOrigin-RevId: 316148074
2020-06-11Replace use of %v in packetimpact testsMithun Iyer
PiperOrigin-RevId: 316027588
2020-06-11Set the HOME environment variable for sub-containers.Ian Lewis
Fixes #701 PiperOrigin-RevId: 316025635
2020-06-11Remove generated logs when test succeeds.Adin Scannell
PiperOrigin-RevId: 316022884
2020-06-11Add test for reordering.Ian Gudger
Tests the effect of reordering on retransmission and window size. Test covers the expected behavior of both Linux and netstack, however, netstack does not behave as expected. Further, the current expected behavior of netstack is not ideal and should be adjusted in the future. PiperOrigin-RevId: 316015184
2020-06-11Merge pull request #2705 from lubinszARM:pr_sigfp_nestedgVisor bot
PiperOrigin-RevId: 315979564
2020-06-11Refactor packetimpact Connection typesgVisor bot
Reorganize the Connection types such that the defined types no longer expose the lower-level functions SendFrame and CreateFrame. These methods are still exported on the underlying Connection type, and thus can be accessed via a type-cast. In future, defined types should have one or more type-safe versions of the send() method on Connection, e.g. UDPIPv4 has Send() which allows the UDP header to be overridden and SendIP() which allows both the IPv4 and UDP headers to be modified. testbench.Connection gets a SendFrameStateless method which sends frames without updating the state of any of the layers. This should be used when sending out-of-band control messages such as ICMP messages, as using the normal Send method can result in errors when attempting to update the TCP state using an ICMP packet. Also remove the localAddr field of testbench.Connection and instead compute it on the fly as needed for UDPIPv4 and TCPIPv4. PiperOrigin-RevId: 315969714
2020-06-10Add support for SO_REUSEADDR to UDP sockets/endpoints.Ian Gudger
On UDP sockets, SO_REUSEADDR allows multiple sockets to bind to the same address, but only delivers packets to the most recently bound socket. This differs from the behavior of SO_REUSEADDR on TCP sockets. SO_REUSEADDR for TCP sockets will likely need an almost completely independent implementation. SO_REUSEADDR has some odd interactions with the similar SO_REUSEPORT. These interactions are tested fairly extensively and all but one particularly odd one (that honestly seems like a bug) behave the same on gVisor and Linux. PiperOrigin-RevId: 315844832
2020-06-10Fix the error code for syscall test with null TOS.Nayana Bidari
The setsockopt with nullptr can fail with either EFAULT or zero. PiperOrigin-RevId: 315777107
2020-06-10{S,G}etsockopt for TCP_KEEPCNT option.Nayana Bidari
TCP_KEEPCNT is used to set the maximum keepalive probes to be sent before dropping the connection. WANT_LGTM=jchacon PiperOrigin-RevId: 315758094
2020-06-10socket/unix: handle sendto address argument for connected socketsAndrei Vagin
In case of SOCK_SEQPACKET, it has to be ignored. In case of SOCK_STREAM, EISCONN or EOPNOTSUPP has to be returned. PiperOrigin-RevId: 315755972
2020-06-09Implement flock(2) in VFS2Fabricio Voznika
LockFD is the generic implementation that can be embedded in FileDescriptionImpl implementations. Unique lock ID is maintained in vfs.FileDescription and is created on demand. Updates #1480 PiperOrigin-RevId: 315604825
2020-06-09Fix write hang bug found by syzkaller.gVisor bot
After this change e.mu is only promoted to exclusively locked during route.Resolve. It downgrades back to read-lock afterwards. This prevents the second RLock() call gets stuck later in the stack. https://syzkaller.appspot.com/bug?id=065b893bd8d1d04a4e0a1d53c578537cde1efe99 Syzkaller logs does not contain interesting stack traces. The following stack trace is obtained by running repro locally. goroutine 53 [semacquire, 3 minutes]: runtime.gopark(0xfd4278, 0x1896320, 0xc000301912, 0x4) GOROOT/src/runtime/proc.go:304 +0xe0 fp=0xc0000e25f8 sp=0xc0000e25d8 pc=0x437170 runtime.goparkunlock(...) GOROOT/src/runtime/proc.go:310 runtime.semacquire1(0xc0001220b0, 0xc00000a300, 0x1, 0x0) GOROOT/src/runtime/sema.go:144 +0x1c0 fp=0xc0000e2660 sp=0xc0000e25f8 pc=0x4484e0 sync.runtime_Semacquire(0xc0001220b0) GOROOT/src/runtime/sema.go:56 +0x42 fp=0xc0000e2690 sp=0xc0000e2660 pc=0x448132 gvisor.dev/gvisor/pkg/sync.(*RWMutex).RLock(...) pkg/sync/rwmutex_unsafe.go:76 gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).HandleControlPacket(0xc000122000, 0x7ee5, 0xc00053c16c, 0x4, 0x5e21, 0xc00053c224, 0x4, 0x1, 0x0, 0xc00007ed00) pkg/tcpip/transport/udp/endpoint.go:1345 +0x169 fp=0xc0000e26d8 sp=0xc0000e2690 pc=0x9843f9 ...... gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*protocol).HandleUnknownDestinationPacket(0x18bb5a0, 0xc000556540, 0x5e21, 0xc00053c16c, 0x4, 0x7ee5, 0xc00053c1ec, 0x4, 0xc00007e680, 0x4) pkg/tcpip/transport/udp/protocol.go:143 +0xb9a fp=0xc0000e8260 sp=0xc0000e7510 pc=0x9859ba ...... gvisor.dev/gvisor/pkg/tcpip/transport/udp.sendUDP(0xc0001220d0, 0xc00053ece0, 0x1, 0x1, 0x883, 0x1405e217ee5, 0x11100a0, 0xc000592000, 0xf88780) pkg/tcpip/transport/udp/endpoint.go:924 +0x3b0 fp=0xc0000ed390 sp=0xc0000ec750 pc=0x981af0 gvisor.dev/gvisor/pkg/tcpip/transport/udp.(*endpoint).write(0xc000122000, 0x11104e0, 0xc00020a460, 0x0, 0x0, 0x0, 0x0, 0x0) pkg/tcpip/transport/udp/endpoint.go:510 +0x4ad fp=0xc0000ed658 sp=0xc0000ed390 pc=0x97f2dd PiperOrigin-RevId: 315590041
2020-06-08test/runtimes/proctor: remove an unknown nocgo attribute from go_test ruleAndrei Vagin
PiperOrigin-RevId: 315353408
2020-06-07Merge pull request #2788 from lubinszARM:pr_exec_2gVisor bot
PiperOrigin-RevId: 315166991
2020-06-05Merge pull request #2872 from kevinGC:ipt-skip-preroutinggVisor bot
PiperOrigin-RevId: 315041419
2020-06-05iptables: loopback traffic skips prerouting chainKevin Krakauer
Loopback traffic is not affected by rules in the PREROUTING chain. This change is also necessary for istio's envoy to talk to other components in the same pod.
2020-06-05Use top-down allocation for pgalloc.Adin Scannell
This change has multiple small components. First, the chunk size is bumped to 1GB in order to avoid creating excessive VMAs in the Sentry, which can lead to VMA exhaustion (and hitting limits). Second, gap-tracking is added to the usage set in order to efficiently scan for available regions. Third, reclaim is moved to a simple segment set. This is done to allow the order of reclaim to align with the Allocate order (which becomes much more complex when trying to track a "max page" as opposed to "min page", so we just track explicit segments instead, which should make reclaim scanning faster anyways). Finally, the findAvailable function attempts to scan from the top-down, in order to maximize opportunities for VMA merging in applications (hopefully preventing the same VMA exhaustion that can affect the Sentry). PiperOrigin-RevId: 315009249
2020-06-05Unshare files on execAndrei Vagin
The current task can share its fdtable with a few other tasks, but after exec, this should be a completely separate process. PiperOrigin-RevId: 314999565
2020-06-05Fix error code returned due to Port exhaustion.Bhasker Hariharan
For TCP sockets gVisor incorrectly returns EAGAIN when no ephemeral ports are available to bind during a connect. Linux returns EADDRNOTAVAIL. This change fixes gVisor to return the correct code and adds a test for the same. This change also fixes a minor bug for ping sockets where connect() would fail with EINVAL unless the socket was bound first. Also added tests for testing UDP Port exhaustion and Ping socket port exhaustion. PiperOrigin-RevId: 314988525
2020-06-05Merge pull request #2879 from avagin:test-hostinetgVisor bot
PiperOrigin-RevId: 314970516
2020-06-05Handle TCP segment split cases as per MSS.Mithun Iyer
- Always split segments larger than MSS. Currently, we base the segment split decision as a function of the send congestion window and MSS, which could be greater than the MSS advertised by remote. - While splitting segments, ensure the PSH flag is reset when there are segments that are queued to be sent. - With TCP_CORK, hold up segments up until MSS. Fix a bug in computing available send space before attempting to coalesce segments. Fixes #2832 PiperOrigin-RevId: 314802928
2020-06-04test/syscall: run hostnet tests in separate network namespacesAndrei Vagin
A few tests use hard coded port numbers, so we need to guruantee that these ports will not be used for somthing else.
2020-06-03Add test for O_TRUNCZach Koopmans
b/36576592 calls out an edge case previously not supported by HostFS. HostFS is currently being removed, meaning gVisor supports this feature. Simply add the test to open_test. PiperOrigin-RevId: 314610226
2020-06-03Avoid TCP segment split when out of sender window.Mithun Iyer
If the entire segment cannot be accommodated in the receiver advertised window and if there are still unacknowledged pending segments, skip splitting the segment. The segment transmit would get retried by the retransmit handler. PiperOrigin-RevId: 314538523
2020-06-02Check that two sockets with different types can't be connected to each otherAndrei Vagin
PiperOrigin-RevId: 314450191
2020-06-01Enable VFS2 to runsc syscall testsFabricio Voznika
Updates #1487 PiperOrigin-RevId: 314271995
2020-06-01Add inotify events for extended attributes and splice.Dean Deng
Splice, setxattr and removexattr should generate events. Note that VFS2 already generates events for extended attributes. Updates #1479. PiperOrigin-RevId: 314244261
2020-06-01Deflake pty_test_linux.Nicolas Lacasse
PiperOrigin-RevId: 314208973
2020-06-01Fix inotify test.Dean Deng
PiperOrigin-RevId: 314192441
2020-06-01Skip proc/pid/fd socket test for VFS1 only.Dean Deng
PiperOrigin-RevId: 314192359
2020-06-01Internal change.gVisor bot
PiperOrigin-RevId: 314157710
2020-05-29Test TCP should queue RECEIVE request in SYN-SENTZeling Feng
PiperOrigin-RevId: 313878910
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