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2021-07-15netstack: support SO_RCVBUFFORCEKevin Krakauer
TCP is fully supported. As with SO_RCVBUF, other transport protocols perform no-ops per DefaultSocketOptionsHandler.OnSetReceiveBufferSize. PiperOrigin-RevId: 385023239
2021-07-14Add verity symlink testsChong Cai
PiperOrigin-RevId: 384823097
2021-07-14testing: shrink exhaustion test size to avoid timeoutsKevin Krakauer
Tested via: ``` bazel test \ //test/syscalls:socket_ipv4_udp_unbound_loopback_nogotsan_test_runsc_ptrace --runs_per_test=2000 ``` PiperOrigin-RevId: 384773477
2021-07-12Fix async-signal-unsafety in chroot test.Jamie Liu
PiperOrigin-RevId: 384295543
2021-07-08Fix async-signal-unsafety in socket test.Jamie Liu
PiperOrigin-RevId: 383689096
2021-07-02[op] Make TCPNonBlockingConnectClose more reasonable.Ayush Ranjan
This test single handedly causes the syscalls:socket_inet_loopback_test test variants to take more than an hour to run on some of our testing environments. Reduce how aggressively this test tries to replicate a fixed flake. This is a regression test. PiperOrigin-RevId: 382849039
2021-07-01Fix bug with TCP bind w/ SO_REUSEADDR.Bhasker Hariharan
In gVisor today its possible that when trying to bind a TCP socket w/ SO_REUSEADDR specified and requesting the kernel pick a port by setting port to zero can result in a previously bound port being returned. This behaviour is incorrect as the user is clearly requesting a free port. The behaviour is fine when the user explicity specifies a port. This change now checks if the user specified a port when making a port reservation for a TCP port and only returns unbound ports even if SO_REUSEADDR was specified. Fixes #6209 PiperOrigin-RevId: 382607638
2021-06-29Merge pull request #6085 from liornm:fix-tun-no_pigVisor bot
PiperOrigin-RevId: 382202462
2021-06-29Add SIOCGIFFLAGS ioctl support to hostinet.Lucas Manning
PiperOrigin-RevId: 382194711
2021-06-29Fix TUN IFF_NO_PI bugliornm
When TUN is created with IFF_NO_PI flag, there will be no Ethernet header and no packet info, therefore, both read and write will fail. This commit fix this bug.
2021-06-28code quality: cleanup lint messagesKevin Krakauer
dns PiperOrigin-RevId: 381949375
2021-06-28check explicitly that AF_PACKET sockets can't write in gVisorKevin Krakauer
PiperOrigin-RevId: 381896875
2021-06-24Run `:socket_inet_loopback_isolated_test_linux` tests in a container.Etienne Perot
This creates new user and network namespaces for all tests in `:socket_inet_loopback_isolated_test_linux`. PiperOrigin-RevId: 381374120
2021-06-23Fix PR_SET_PTRACER applicability to non-leader threads.Jamie Liu
Compare if (!thread_group_leader(tracee)) tracee = rcu_dereference(tracee->group_leader); in security/yama/yama_lsm.c:ptracer_exception_found(). PiperOrigin-RevId: 381074242
2021-06-22Wake up Writers when tcp socket is shutdown for writes.Bhasker Hariharan
PiperOrigin-RevId: 380967023
2021-06-22`socket_inet_loopback`: Split off tests that need isolation in their own file.Etienne Perot
This allows these tests, which can cause flakiness when run in the same network namespace as the other `socket_inet_loopback` tests, to run as separate tests in their own environment. It also means that all of the shards of those tests can be more isolated from each other as well. PiperOrigin-RevId: 380930198
2021-06-22Trigger poll/epoll events on zero-length hostinet sendmsgIan Lewis
Fixes #2726 PiperOrigin-RevId: 380753516
2021-06-21clean up tcpdump TODOsKevin Krakauer
tcpdump is largely supported. We've also chose not to implement writeable AF_PACKET sockets, and there's a bug specifically for promiscuous mode (#3333). Fixes #173. PiperOrigin-RevId: 380733686
2021-06-17raw sockets: don't overwrite destination addressKevin Krakauer
Also makes the behavior of raw sockets WRT fragmentation clearer, and makes the ICMPv4 header-length check explicit. Fixes #3160. PiperOrigin-RevId: 380033450
2021-06-16Fix broken hdrincl testKevin Krakauer
Fixes #3159. PiperOrigin-RevId: 379814096
2021-06-15Deflake SocketInetLoopbackTest.TCPBacklogKevin Krakauer
The value can be off by one depending on the kernel we're running. Tested with --runs_per_test=1000. PiperOrigin-RevId: 379535390
2021-06-14Cleanup lint messagesKevin Krakauer
PiperOrigin-RevId: 379380041
2021-06-14Remove debug lines from exec.ccZach Koopmans
PiperOrigin-RevId: 379298590
2021-06-11Fix //test/syscalls:exec_test_nativeZach Koopmans
Later kernels add empty arguments to argv, throwing off return values for the exec_basic_workload.cc binary. This is result of a bug introduced by ccbb18b67323b "exec/binfmt_script: Don't modify bprm->buf and then return - ENOEXEC". Before this change, an empty interpreter string was reported if the first non-space/non-tab character after "#!" was '\0' (end of file, previously- overwritten trailing space or tab, or previously-overwritten first newline). After this change, an empty interpreter string is reported if all characters after "#!" are spaces or tabs, or the first non-space non-tab character is at i_end, which is the position of the first newline after "#!". However, if there is no newline after "#!" (as in ExecTest.InterpreterScriptNoPath), then i_end = buf_end (= bprm->buf + sizeof(bprm->buf) - 1, the last possible byte in the buffer) and neither condition holds. Change white space for script inputs to take into account the above bug. Co-authored-by: Andrei Vagin <avagin@gmail.com> PiperOrigin-RevId: 378997171
2021-06-11Temorary skip test cases that fail on LinuxAndrei Vagin
PiperOrigin-RevId: 378974239
2021-06-10Add /proc/sys/vm/max_map_countFabricio Voznika
Set it to int32 max because gVisor doesn't have a limit. Fixes #2337 PiperOrigin-RevId: 378722230
2021-06-10Merge pull request #6103 from sudo-sturbia:semaphore-errgVisor bot
PiperOrigin-RevId: 378607458
2021-06-07test: use std::vector instead of allocating memory with callocAndrei Vagin
A memory that is allocated with calloc has to be freed. PiperOrigin-RevId: 378001409
2021-06-07Implement RENAME_NOREPLACE for all VFS2 filesystem implementations.Jamie Liu
PiperOrigin-RevId: 377966969
2021-06-04Add bind syscall tests for ICMP and ICMPv6Sam Balana
Updates #5711 Updates #6021 Updates #6022 PiperOrigin-RevId: 377582446
2021-06-03Reset global_num_signals_received on RegisterSignalHandlerAdam Barth
Previously, the value of global_num_signals_received would persist between tests. Now, we reset the value to zero when we register a signal handler. PiperOrigin-RevId: 377308357
2021-06-01Ensure full shutdown of endpoint on notifyCloseMithun Iyer
Address a race with non-blocking connect and socket close, causing the FIN (because of socket close) to not be sent out, even after completing the handshake. The race occurs with this sequence: (1) endpoint Connect starts handshake, sending out SYN (2) handshake complete() releases endpoint lock, waiting on sleeper.Fetch() (3) endpoint Close acquires endpoint lock, does not enqueue FIN (as the endpoint is not yet connected) and asserts notifyClose (4) SYNACK from peer gets enqueued asserting newSegmentWaker (5) handshake complete() re-aqcuires lock, first processes newSegmentWaker event, transitions to ESTABLISHED and proceeds to protocolMainLoop() (6) protocolMainLoop() exits while processing notifyClose When the execution follows the above sequence, no FIN is sent to the peer. This causes the listener side to have a half-open connection sitting in the accept queue. Fix this by ensuring that the protocolMainLoop() performs clean shutdown when the endpoint state is still ESTABLISHED. This would not be a bug, if during handshake complete(), sleeper.Fetch() prioritized notificationWaker over newSegmentWaker. In that case, the handshake would not have completed in (5) above. Fixes #6067 PiperOrigin-RevId: 376994395
2021-06-01Test system-wide semaphore limits.Zyad A. Ali
2021-05-27nanosleep has to store the finish time in the restart blockAndrei Vagin
nanosleep has to count time that a thread spent in the stopped state. PiperOrigin-RevId: 376258641
2021-05-26Add verity getdents testsChong Cai
PiperOrigin-RevId: 376001603
2021-05-25Enable verity after mount in verity_mount testChong Cai
PiperOrigin-RevId: 375823719
2021-05-25setgid directories for VFS1 tmpfs, overlayfs, and goferfsKevin Krakauer
PiperOrigin-RevId: 375780659
2021-05-25Expect POLLRDHUP on FuchsiaTamir Duberstein
PiperOrigin-RevId: 375749377
2021-05-21Make many tests build with NDK.Adam Barth
Not all the tests build yet, but many of them do now. PiperOrigin-RevId: 375209824
2021-05-21Prevent infinite loops from being optimized away.gVisor bot
https://github.com/llvm/llvm-project/commit/6c3129549374c0e81e28fd0a21e96f8087b63a78 adds "mustprogress" to loops, which causes empty, side-effect free loops to be optimized away. These loops are intentionally infinite for purposes of testing, so add asm statements that prevent them from being removed. PiperOrigin-RevId: 375188453
2021-05-20Send SIGPIPE for closed pipes.Ian Lewis
Fixes #5974 Updates #161 PiperOrigin-RevId: 375024740
2021-05-20Add protocol state to TCPINFOMithun Iyer
Add missing protocol state to TCPINFO struct and update packetimpact. This re-arranges the TCP state definitions to align with Linux. Fixes #478 PiperOrigin-RevId: 374996751
2021-05-20Fix cgroupfs mount racing with unmount.Rahat Mahmood
Previously, mount could discover a hierarchy being destroyed concurrently, which resulted in mount attempting to take a ref on an already destroyed cgroupfs. Reported-by: syzbot+062c0a67798a200f23ee@syzkaller.appspotmail.com PiperOrigin-RevId: 374959054
2021-05-18Be explicit about setsid() return values in pty.ccKevin Krakauer
PiperOrigin-RevId: 374570219
2021-05-18Prevent infinite loops from being optimized away.gVisor bot
https://github.com/llvm/llvm-project/commit/6c3129549374c0e81e28fd0a21e96f8087b63a78 adds "mustprogress" to loops, which causes empty, side-effect free loops to be optimized away. These loops are intentionally infinite for purposes of testing, so add asm statements that prevent them from being removed. PiperOrigin-RevId: 374546142
2021-05-18Merge pull request #5908 from zhlhahaha:2157gVisor bot
PiperOrigin-RevId: 374517895
2021-05-17Reduce thread count in TCPResetDuringClose.Jamie Liu
This test suffers from extreme contention on tcpip/stack.AddressableEndpointState.mu via AddressableEndpointState.decAddressRef, at least when Go race detection is enabled. PiperOrigin-RevId: 374273745
2021-05-14Resolve remaining O_PATH TODOs.Dean Deng
O_PATH is now implemented in vfs2. Fixes #2782. PiperOrigin-RevId: 373861410
2021-05-14Add verity_mmap testsChong Cai
PiperOrigin-RevId: 373854462
2021-05-14Fix cgroup hierarchy registration.Rahat Mahmood
Previously, registration was racy because we were publishing hierarchies in the registry without fully initializing the underlying filesystem. This led to concurrent mount(2)s discovering the partially intialized filesystems and dropping the final refs on them which cause them to be freed prematurely. Reported-by: syzbot+13f54e77bdf59f0171f0@syzkaller.appspotmail.com Reported-by: syzbot+2c7f0a9127ac6a84f17e@syzkaller.appspotmail.com PiperOrigin-RevId: 373824552
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