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2021-08-05Correctly handle interruptions in blocking msgqueue syscalls.Rahat Mahmood
Reported-by: syzbot+63bde04529f701c76168@syzkaller.appspotmail.com Reported-by: syzbot+69866b9a16ec29993e6a@syzkaller.appspotmail.com PiperOrigin-RevId: 389084629
2021-08-05Replace unsafe use of fork() in msgqueue tests.Rahat Mahmood
Msgqueue tests were using fork() to run create a separate thread of execution for passing messages back and forth over a queue. However, the child process after a fork() may only use async-signal-safe functions, which at a minimum exclude gtest asserts. Instead, use threads. PiperOrigin-RevId: 389073744
2021-08-05Skip mmap test cases if underlying FS doesn't support maps.Rahat Mahmood
For file-based mmap tests, the underlying file system may not support mmaps depending on the sandbox configuration. This is case when caching is disabled for goferfs. PiperOrigin-RevId: 389052722
2021-08-04Implement PR_SET_CHILD_SUBREAPER when the calling task is PID 1.Nicolas Lacasse
In this case, the task is already a subreaper, so setting this bit is a noop. Updates #2323 PiperOrigin-RevId: 388828034
2021-08-03Use GetAbsoluteTestTmpdir() rather than hard-code "/tmp"Adam Barth
This change makes these tests easier to run on systems that have their temp directory in another location. PiperOrigin-RevId: 388601202
2021-08-03Merge pull request #6171 from sudo-sturbia:msgqueue/syscalls2gVisor bot
PiperOrigin-RevId: 388497055
2021-08-03Implement MSG_COPY option for msgrcv(2).Zyad A. Ali
Implement Queue.Copy and add more tests for it. Updates #135
2021-08-03Implement stubs for msgsnd(2) and msgrcv(2).Zyad A. Ali
Add support for msgsnd and msgrcv and enable syscall tests. Updates #135
2021-08-03Add blocking and general tests for msgsnd(2) and msgrcv(2).Zyad A. Ali
Updates #135
2021-08-03Add non-blocking tests for msgsnd(2) and msgrcv(2).Zyad A. Ali
Updates #135
2021-07-30Support RTM_DELLINKZeling Feng
This change will allow us to remove the default link in a packetimpact test so we can reduce indeterministic behaviors as required in https://fxbug.dev/78430. This will also help with testing #1388. Updates #578, #1388. PiperOrigin-RevId: 387896847
2021-07-30Merge pull request #6257 from zhlhahaha:2193-1gVisor bot
PiperOrigin-RevId: 387885663
2021-07-28Add Uid/Gid/Groups fields to VFS2 /proc/[pid]/status.Jamie Liu
For comparison: ``` $ docker run --rm -it ubuntu:focal bash -c 'cat /proc/self/status' Name: cat Umask: 0022 State: R (running) Tgid: 1 Ngid: 0 Pid: 1 PPid: 0 TracerPid: 0 Uid: 0 0 0 0 Gid: 0 0 0 0 FDSize: 64 Groups: NStgid: 1 NSpid: 1 NSpgid: 1 NSsid: 1 VmPeak: 2660 kB VmSize: 2660 kB VmLck: 0 kB VmPin: 0 kB VmHWM: 528 kB VmRSS: 528 kB ... $ docker run --runtime=runsc-vfs2 --rm -it ubuntu:focal bash -c 'cat /proc/self/status' Name: cat State: R (running) Tgid: 1 Pid: 1 PPid: 0 TracerPid: 0 Uid: 0 0 0 0 Gid: 0 0 0 0 FDSize: 4 Groups: VmSize: 10708 kB VmRSS: 3124 kB VmData: 316 kB ... ``` Fixes #6374 PiperOrigin-RevId: 387465655
2021-07-27Don't create an extra fd bitmap to allocate a new fd.Andrei Vagin
2021-07-23Add verity open benchmark testChong Cai
PiperOrigin-RevId: 386533065
2021-07-23Don't panic on user-controlled state in semaphore syscalls.Rahat Mahmood
Reported-by: syzbot+beb099a67f670386a367@syzkaller.appspotmail.com PiperOrigin-RevId: 386521361
2021-07-23update bug number in loopback testsKevin Krakauer
PiperOrigin-RevId: 386511209
2021-07-23buildkite: deflake itimer testKevin Krakauer
The self-admittedly arbitrary threshold of 20% of alarms being sent to the main thread was being breached. I saw a run of of ~20-23% [1]. We should allow for a little more breathing room. 1 - https://buildkite.com/gvisor/pipeline/builds/7400 PiperOrigin-RevId: 386503482
2021-07-22Move socket_test_util to //test/utilGhanan Gowripalan
...and rename the library to socket_util. PiperOrigin-RevId: 386348306
2021-07-22Merge pull request #6108 from sudo-sturbia:msgqueue/syscallsgVisor bot
PiperOrigin-RevId: 386323389
2021-07-20Enable RACK by default in netstack.Nayana Bidari
PiperOrigin-RevId: 385944428
2021-07-20Expose local address from raw socketsGhanan Gowripalan
PiperOrigin-RevId: 385940836
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
2021-07-13Implement stubs for msgget(2) and msgctl(IPC_RMID).Zyad A. Ali
Add support for msgget, and msgctl(IPC_RMID), and enable msgqueue syscall tests. Updates #135
2021-07-13Add initial test cases for msgget(2).Zyad A. Ali
Updates #135
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
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