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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
2021-05-11fix pty_test error by releasing tty received from testHoward Zhang
The test Truncate set ControllingTTY without releasing it on VFS2. This leads test ReleaseTTYSignals and ReleaseTTY fail when setting ControllingTTY. Skip the test on VFS1 and native, as setting Controlling TTY when open replica only happens on VFS2. Signed-off-by: Howard Zhang <howard.zhang@arm.com>
2021-05-06Implement /proc/cmdlineSteve Silva
This change implements /proc/cmdline with a basic faux command line "BOOT_IMAGE=/vmlinuz-[version]-gvisor quiet" so apps that may expect it do not receive errors. Also tests for the existence of /proc/cmdline as part of the system call test suite PiperOrigin-RevId: 372462070
2021-05-04tcp_socket_test: replace tcp_wmem with SO_SNDBUFKevin Krakauer
PiperOrigin-RevId: 372022596
2021-05-04Increase error margin for memory accounting test.Dean Deng
PiperOrigin-RevId: 371963265
2021-05-03Temporarily disable atime/mtime check in utimensat test.Dean Deng
PiperOrigin-RevId: 371776583
2021-05-03Fix deadlock in /proc/[pid]/fd/[num]Fabricio Voznika
In order to resolve path names, fsSymlink.Readlink() may need to reenter kernfs. Change the code so that kernfs.Inode.Readlink() is called without locks and document the new contract. PiperOrigin-RevId: 371770222
2021-04-30Fix //test/syscalls:tcp_socket_test_nativeKevin Krakauer
The data written was larger than the write buffer, and nobody was reading the other end. PiperOrigin-RevId: 371436084
2021-04-29Fix up TODOs in the codeFabricio Voznika
PiperOrigin-RevId: 371231148
2021-04-29Implement epoll_pwait2.Jing Chen
PiperOrigin-RevId: 371216407
2021-04-28Remove side effect from test casesFabricio Voznika
Restore capabilities for tests that need to change them. PiperOrigin-RevId: 371007047
2021-04-28Disable test that is always skippedFabricio Voznika
PiperOrigin-RevId: 370989166
2021-04-26Merge pull request #5898 from zhlhahaha:2126-1gVisor bot
PiperOrigin-RevId: 370569000
2021-04-26Handle tmpfs with 5 fields in /proc/mounts parsing.Adin Scannell
PiperOrigin-RevId: 370565903
2021-04-26fix brace misplaced errorHoward Zhang
Signed-off-by: Howard Zhang <howard.zhang@arm.com>
2021-04-24Add verity tests for stat, deleted/renamed fileChong Cai
PiperOrigin-RevId: 370219558
2021-04-23hostinet: parse the timeval structure from a SO_TIMESTAMP control messageAndrei Vagin
PiperOrigin-RevId: 370181621
2021-04-22Remove side effect from mount testsFabricio Voznika
Dropping CAP_SYS_ADMIN and not restoring it causes other tests to be skipped. PiperOrigin-RevId: 370002644
2021-04-22Add mlock syscall testFabricio Voznika
PiperOrigin-RevId: 369993733
2021-04-22Fix AF_UNIX listen() w/ zero backlog.Bhasker Hariharan
In https://github.com/google/gvisor/commit/f075522849fa a check to increase zero to a minimum backlog length was removed from sys_socket.go to bring it in parity with linux and then in tcp/endpoint.go we bump backlog by 1. But this broke calling listen on a AF_UNIX socket w/ a zero backlog as in linux it does allow 1 connection even with a zero backlog. This was caught by a php runtime test socket_abstract_path.phpt. PiperOrigin-RevId: 369974744
2021-04-22Also report mount options through /proc/<pid>/mounts.Rahat Mahmood
PiperOrigin-RevId: 369967629
2021-04-22Add verity tests for modified file/Merkle fileChong Cai
PiperOrigin-RevId: 369909691
2021-04-21Stub the custom "job" controller required by some workloads.Rahat Mahmood
PiperOrigin-RevId: 369724358
2021-04-20Clean test tags.Adin Scannell
PiperOrigin-RevId: 369505182
2021-04-20Move SO_RCVBUF to socketops.Nayana Bidari
Fixes #2926, #674 PiperOrigin-RevId: 369457123
2021-04-17Avoid ignoring incoming packet by demuxer on endpoint lookup failureMithun Iyer
This fixes a race that occurs while the endpoint is being unregistered and the transport demuxer attempts to match the incoming packet to any endpoint. The race specifically occurs when the unregistration (and deletion of the endpoint) occurs, after a successful endpointsByNIC lookup and before the endpoints map is further looked up with ingress NICID of the packet. The fix is to notify the caller of lookup-with-NICID failure, so that the logic falls through to handling unknown destination packets. For TCP this can mean replying back with RST. The syscall test in this CL catches this race as the ACK completing the handshake could get silently dropped on a listener close, causing no RST sent to the peer and timing out the poll waiting for POLLHUP. Fixes #5850 PiperOrigin-RevId: 369023779
2021-04-16Use size_t instead of C integer types.Dean Deng
PiperOrigin-RevId: 368919557
2021-04-15Add verity ioctl test for mount with root hashChong Cai
PiperOrigin-RevId: 368779532
2021-04-15Disable failing socket_ipv4_udp_unbound_loopback_test_linux tests.Dean Deng
PiperOrigin-RevId: 368749894
2021-04-13Remove _NoRandomSave tests.Adin Scannell
We do not currently run random save tests. PiperOrigin-RevId: 368309921
2021-04-13Fix listener close, client connect raceMithun Iyer
Fix a race where the ACK completing the handshake can be dropped by a closing listener without RST to the peer. The listener close would reset the accepted queue and that causes the connecting endpoint in SYNRCVD state to drop the ACK thinking the queue if filled up. PiperOrigin-RevId: 368165509
2021-04-12Make AsSockAddr() to replace reinterpret_cast<sockaddr*>Ting-Yu Wang
It's a common pattern in test code to reinterpret_cast<sockaddr*> from sockaddr_* structs. Make AsSockAddr() for them so code looks better. Note: Why not a wrapper type for `sockaddr_storage` and etc? It's also a common need to have a local in-out variable of socklen_t. Creating a wrapper type may however lead to this wrong code: Wrapper addr; socklen_t addrlen = sizeof(addr); where sizeof(Wrapper) may not equal to sizeof(sockaddr_storage). PiperOrigin-RevId: 368126229
2021-04-09Merge pull request #5767 from avagin:mxcsrgVisor bot
PiperOrigin-RevId: 367730917
2021-04-09Move maxListenBacklog check to sentryMithun Iyer
Move maxListenBacklog check to the caller of endpoint Listen so that it is applicable to Unix domain sockets as well. This was changed in cl/366935921. Reported-by: syzbot+a35ae7cdfdde0c41cf7a@syzkaller.appspotmail.com PiperOrigin-RevId: 367728052
2021-04-05Fix listen backlog handling to be in parity with LinuxMithun Iyer
- Change the accept queue full condition for a listening endpoint to only honor completed (and delivered) connections. - Use syncookies if the number of incomplete connections is beyond listen backlog. This also cleans up the SynThreshold option code as that is no longer used with this change. - Added a new stack option to unconditionally generate syncookies. Similar to sysctl -w net.ipv4.tcp_syncookies=2 on Linux. - Enable keeping of incomplete connections beyond listen backlog. - Drop incoming SYNs only if the accept queue is filled up. - Drop incoming ACKs that complete handshakes when accept queue is full - Enable the stack to accept one more connection than programmed by listen backlog. - Handle backlog argument being zero, negative for listen, as Linux. - Add syscall and packetimpact tests to reflect the changes above. - Remove TCPConnectBacklog test which is polling for completed connections on the client side which is not reflective of whether the accept queue is filled up by the test. The modified syscall test in this CL addresses testing of connecting sockets. Fixes #3153 PiperOrigin-RevId: 366935921
2021-04-05Report task CPU usage through the cpuacct cgroup controller.Rahat Mahmood
PiperOrigin-RevId: 366923274
2021-04-05Add initial verity ioctl syscall testsChong Cai
PiperOrigin-RevId: 366907152
2021-04-05deflake semaphore testKevin Krakauer
There's no reason to actually increment the semaphore, it just introduces the chance of a race. PiperOrigin-RevId: 366851795
2021-04-05Allow user mount for verity fsChong Cai
Allow user mounting a verity fs on an existing mount by specifying mount flags root_hash and lower_path. PiperOrigin-RevId: 366843846
2021-04-03Remove eternal and enormous tests.Adin Scannell
PiperOrigin-RevId: 366573366
2021-04-02Implement cgroupfs.Rahat Mahmood
A skeleton implementation of cgroupfs. It supports trivial cpu and memory controllers with no support for hierarchies. PiperOrigin-RevId: 366561126
2021-04-01Remove invalid dependency.Adin Scannell
PiperOrigin-RevId: 366344222
2021-04-01Internal change.gVisor bot
PiperOrigin-RevId: 366292533
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