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2019-06-21Merge 72737532 (automated)gVisor bot
2019-06-21ext4 block group descriptor implementation in disk layout package.Ayush Ranjan
PiperOrigin-RevId: 254482180
2019-06-21Merge e806466f (automated)gVisor bot
2019-06-21Add //pkg/flipcall.Jamie Liu
Flipcall is a (conceptually) simple local-only RPC mechanism. Compared to unet, Flipcall does not support passing FDs (support for which will be provided out of band by another package), requires users to establish connections manually, and requires user management of concurrency since each connected Endpoint pair supports only a single RPC at a time; however, it improves performance by using shared memory for data (reducing memory copies) and using futexes for control signaling (which is much cheaper than sendto/recvfrom/sendmsg/recvmsg). PiperOrigin-RevId: 254471986
2019-06-21Merge 5ba16d51 (automated)gVisor bot
2019-06-21Add list of stuck tasks to panic messageFabricio Voznika
PiperOrigin-RevId: 254450309
2019-06-21Merge c0317b28 (automated)gVisor bot
2019-06-21Update pathNode documentation to reflect realityMichael Pratt
Neither fidRefs or children are (directly) synchronized by mu. Remove the preconditions that say so. That said, the surrounding does enforce some synchronization guarantees (e.g., fidRef.renameChildTo does not atomically replace the child in the maps). I've tried to note the need for callers to do this synchronization. I've also renamed the maps to what are (IMO) clearer names. As is, it is not obvious that pathNode.fidRefs is a map of *child* fidRefs rather than self fidRefs. PiperOrigin-RevId: 254446965
2019-06-21Merge f94653b3 (automated)gVisor bot
2019-06-21kernel: call t.mu.Unlock() explicitly in WithMuLockedAndrei Vagin
defer here doesn't improve readability, but we know it slower that the explicit call. PiperOrigin-RevId: 254441473
2019-06-21Merge 335fd987 (automated)gVisor bot
2019-06-21Delete dangling comment line.Nicolas Lacasse
This was from an old comment, which was superseded by the existing comment which is correct. PiperOrigin-RevId: 254434535
2019-06-21Merge 054b5632 (automated)gVisor bot
2019-06-21Update commentFabricio Voznika
PiperOrigin-RevId: 254428866
2019-06-21Merge dc36c34a (automated)gVisor bot
2019-06-20Close FD on TcpSocketTest loop failure.Ian Gudger
This helps prevent the blocking call from getting stuck and causing a test timeout. PiperOrigin-RevId: 254325926
2019-06-20Merge 3c7448ab (automated)gVisor bot
2019-06-20Deflake TestSIGALRMToMainThread.Neel Natu
Bump up the threshold on number of SIGALRMs received by worker threads from 50 to 200. Even with the new threshold we still expect that the majority of SIGALRMs are received by the thread group leader. PiperOrigin-RevId: 254289787
2019-06-20Merge 292f70cb (automated)gVisor bot
2019-06-20Preallocate auth.NewAnonymousCredentials() in contexttest.TestContext.Jamie Liu
Otherwise every call to, say, fs.ContextCanAccessFile() in a benchmark using contexttest allocates new auth.Credentials, a new auth.UserNamespace, ... PiperOrigin-RevId: 254261051
2019-06-20Add package docs to seqfile and ramfsMichael Pratt
These are the only packages missing docs: https://godoc.org/gvisor.dev/gvisor PiperOrigin-RevId: 254261022
2019-06-20Merge 0b213507 (automated)gVisor bot
2019-06-20Unmark amutex_test as flaky.Rahat Mahmood
PiperOrigin-RevId: 254254058
2019-06-20Implement madvise(MADV_DONTFORK)Neel Natu
PiperOrigin-RevId: 254253777
2019-06-20Merge b46ec370 (automated)gVisor bot
2019-06-20Drop extra characterMichael Pratt
PiperOrigin-RevId: 254237530
2019-06-20Merge 7e495156 (automated)gVisor bot
2019-06-19Deflake SendFileTest_Shutdown.Ian Gudger
The sendfile syscall's backing doSplice contained a race with regard to blocking. If the first attempt failed with syserror.ErrWouldBlock and then the blocking file became ready before registering a waiter, we would just return the ErrWouldBlock (even if we were supposed to block). PiperOrigin-RevId: 254114432
2019-06-20Merge c2d87d5d (automated)gVisor bot
2019-06-19Mark tcp_socket test flaky (for real)Michael Pratt
The tag on the binary has no effect. It must be on the test. PiperOrigin-RevId: 254103480
2019-06-19Merge 9781128d (automated)gVisor bot
2019-06-19Deflake mount_test.Nicolas Lacasse
Inode ids are only stable across Save/Restore if we have an open FD on the inode. All tests that compare inode ids must therefor hold an FD open. PiperOrigin-RevId: 254086603
2019-06-19Merge 773423a9 (automated)gVisor bot
2019-06-19Abort loop on failureMichael Pratt
As-is, on failure these will infinite loop, resulting in test timeout instead of failure. PiperOrigin-RevId: 254074989
2019-06-19Merge 9d2efaac (automated)gVisor bot
2019-06-19Add renamed children pathNodes to target parentMichael Pratt
Otherwise future renames may miss Renamed calls. PiperOrigin-RevId: 254060946
2019-06-19Merge 29f9e4fa (automated)gVisor bot
2019-06-19fileOp{On,At} should pass the remaning symlink traversal count.Nicolas Lacasse
And methods that do more traversals should use the remaining count rather than resetting. PiperOrigin-RevId: 254041720
2019-06-19Merge f7428af9 (automated)gVisor bot
2019-06-19Add MountNamespace to task.Nicolas Lacasse
This allows tasks to have distinct mount namespace, instead of all sharing the kernel's root mount namespace. Currently, the only way for a task to get a different mount namespace than the kernel's root is by explicitly setting a different MountNamespace in CreateProcessArgs, and nothing does this (yet). In a follow-up CL, we will set CreateProcessArgs.MountNamespace when creating a new container inside runsc. Note that "MountNamespace" is a poor term for this thing. It's more like a distinct VFS tree. When we get around to adding real mount namespaces, this will need a better naem. PiperOrigin-RevId: 254009310
2019-06-19Mark tcp_socket test flaky.Neel Natu
PiperOrigin-RevId: 253997465
2019-06-19Merge ca245a42 (automated)gVisor bot
2019-06-18Attempt to fix TestPipeWritesAccumulateFabricio Voznika
Test fails because it's reading 4KB instead of the expected 64KB. Changed the test to read pipe buffer size instead of hardcode and added some logging in case the reason for failure was not pipe buffer size. PiperOrigin-RevId: 253916040
2019-06-18Merge 546b2948 (automated)gVisor bot
2019-06-18Use return values from syscalls in eventfd tests.Rahat Mahmood
PiperOrigin-RevId: 253890611
2019-06-18Merge 0e07c94d (automated)gVisor bot
2019-06-18Kill sandbox process when 'runsc do' exitsFabricio Voznika
PiperOrigin-RevId: 253882115
2019-06-18Merge bdb19b82 (automated)gVisor bot
2019-06-18Add Container/Sandbox args struct for creationFabricio Voznika
There were 3 string arguments that could be easily misplaced and it makes it easier to add new arguments, especially for Container that has dozens of callers. PiperOrigin-RevId: 253872074
2019-06-18Merge 2e137986 (automated)gVisor bot