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2021-02-09Merge release-20210201.0-63-gd6dbe6e5c (automated)gVisor bot
2021-02-09pipe: writeLocked has to return ErrWouldBlock if the pipe is fullAndrei Vagin
PiperOrigin-RevId: 356450303
2021-02-09Merge release-20210201.0-59-gbf4968e17 (automated)gVisor bot
2021-02-08exec: don't panic if an elf file is malformedAndrei Vagin
Reported-by: syzbot+d54bc27a15aefe52c330@syzkaller.appspotmail.com PiperOrigin-RevId: 356406975
2021-02-09Merge release-20210201.0-56-ge51f775cb (automated)gVisor bot
2021-02-08[go-marshal] Remove binary package reference from syscalls package.Ayush Ranjan
Fixes a bug in our getsockopt(2) implementation which was incorrectly using binary.Size() instead of Marshallable.SizeBytes(). PiperOrigin-RevId: 356396551
2021-02-06Merge release-20210125.0-89-g120c8e346 (automated)gVisor bot
2021-02-05Replace TaskFromContext(ctx).Kernel() with KernelFromContext(ctx)Ting-Yu Wang
Panic seen at some code path like control.ExecAsync where ctx does not have a Task. Reported-by: syzbot+55ce727161cf94a7b7d6@syzkaller.appspotmail.com PiperOrigin-RevId: 355960596
2021-02-06Merge release-20210125.0-88-g09afd6832 (automated)gVisor bot
2021-02-05[vfs] Handle `.` and `..` as last path component names in kernfs Rename.Ayush Ranjan
According to vfs.FilesystemImpl.RenameAt documentation: - If the last path component in rp is "." or "..", and opts.Flags contains RENAME_NOREPLACE, RenameAt returns EEXIST. - If the last path component in rp is "." or "..", and opts.Flags does not contain RENAME_NOREPLACE, RenameAt returns EBUSY. Reported-by: syzbot+6189786e64fe13fe43f8@syzkaller.appspotmail.com PiperOrigin-RevId: 355959266
2021-02-04Merge release-20210125.0-84-g41510d274 (automated)gVisor bot
2021-02-04Move getcpu() to core filter listMichael Pratt
Some versions of the Go runtime call getcpu(), so add it for compatibility. The hostcpu package already uses getcpu() on arm64. PiperOrigin-RevId: 355717757
2021-02-04Merge release-20210125.0-83-gaed9d8ce9 (automated)gVisor bot
2021-02-04Call kernfs.syntheticDir.InitRefs() on creation.Nicolas Lacasse
PiperOrigin-RevId: 355675900
2021-02-04Merge release-20210125.0-79-gf2c881f68 (automated)gVisor bot
2021-02-03[vfs] Make sticky bit check consistent with Linux.Ayush Ranjan
Our implementation of vfs.CheckDeleteSticky was not consistent with Linux, specifically not consistent with fs/linux.h:check_sticky(). One of the biggest differences was that the vfs implementation did not allow the owner of the sticky directory to delete files inside it that belonged to other users. This change makes our implementation consistent with Linux. Also adds an integration test to check for this. This bug is also present in VFS1. Updates #3027 PiperOrigin-RevId: 355557425
2021-02-02Merge release-20210125.0-66-gfb422db70 (automated)gVisor bot
2021-02-02Merge release-20210125.0-65-gff8b308a3 (automated)gVisor bot
2021-02-02Remove call to Notify from pipe.VFSPipeFD.CopyOutFrom.Jamie Liu
This was missed in cl/351911375; pipe.VFSPipeFD.SpliceFromNonPipe already calls Notify. PiperOrigin-RevId: 355246655
2021-02-02Merge release-20210125.0-62-g5f7bf3152 (automated)gVisor bot
2021-02-02Stub out basic `runsc events --stat` CPU functionalityKevin Krakauer
Because we lack gVisor-internal cgroups, we take the CPU usage of the entire pod and divide it proportionally according to sentry-internal usage stats. This fixes `kubectl top pods`, which gets a pod's CPU usage by summing the usage of its containers. Addresses #172. PiperOrigin-RevId: 355229833
2021-02-02Merge release-20210125.0-61-gf884ea13b (automated)gVisor bot
2021-02-02Move ring0 package.Adin Scannell
This allows the package to serve as a general purpose ring0 support package, as opposed to being bound to specific sentry platforms. Updates #5039 PiperOrigin-RevId: 355220044
2021-02-02Merge release-20210125.0-60-gd6d169320 (automated)gVisor bot
2021-02-02Add ETIMEDOUT to partial result listFabricio Voznika
Reported-by: syzbot+db8d83f93b84fcb84374@syzkaller.appspotmail.com PiperOrigin-RevId: 355213994
2021-02-02Merge release-20210125.0-55-g5fa683ffd (automated)gVisor bot
2021-02-02Minor page tables improvements.Adin Scannell
* Make split safe. * Enable looking up next valid address. * Support mappings with !accessType.Any(), distinct from unmap. These changes allow for the use of pagetables in low-level OS packages, such as ring0, and allow for the use of pagetables for more generic address space reservation (by writing entries with no access specified). Updates #5039 PiperOrigin-RevId: 355109016
2021-02-01Merge release-20210125.0-47-gebd3912c0 (automated)gVisor bot
2021-02-01Refactor HandleControlPacket/SockErrorGhanan Gowripalan
...to remove the need for the transport layer to deduce the type of error it received. Rename HandleControlPacket to HandleError as HandleControlPacket only handles errors. tcpip.SockError now holds a tcpip.SockErrorCause interface that different errors can implement. PiperOrigin-RevId: 354994306
2021-01-29Merge release-20210125.0-30-g0fa534f11 (automated)gVisor bot
2021-01-29Fix deadlock in specialFileFD.pwriteFabricio Voznika
When file is regular and metadata cache is authoritative, metadata lock is taken. The code deadlocks trying to acquire the metadata lock again to update time stampts. PiperOrigin-RevId: 354584594
2021-01-29Merge release-20210125.0-21-g8d1afb418 (automated)gVisor bot
2021-01-29Merge release-20210125.0-20-gc99e092a3 (automated)gVisor bot
2021-01-28Change tcpip.Error to an interfaceTamir Duberstein
This makes it possible to add data to types that implement tcpip.Error. ErrBadLinkEndpoint is removed as it is unused. PiperOrigin-RevId: 354437314
2021-01-28Propagate reader error in ReadFromTamir Duberstein
This was removed in 6c0e1d9cfe6adbfbb32e7020d6426608ac63ad37 but turns out to be crucial to prevent flaky behaviour in sendfile. PiperOrigin-RevId: 354434144
2021-01-29Merge release-20210125.0-17-g62a37034f (automated)gVisor bot
2021-01-28[vfs] Fix rename implementation in OrderedChildren.Ayush Ranjan
Fixes #3027 as there is just 1 writable user using OrderedChildren's rename, unlink and rmdir (kernfs.syntheticDirectory) but it doesn't support the sticky bit yet. Fuse which is the other writable user implements its own Inode operations. PiperOrigin-RevId: 354386522
2021-01-28Merge release-20210125.0-15-gd8c330254 (automated)gVisor bot
2021-01-28Add O_PATH support in vfs2gVisor bot
PiperOrigin-RevId: 354367665
2021-01-28Merge release-20210112.0-104-g99988e45e (automated)gVisor bot
2021-01-27Add support for more fields in netstack for TCP_INFONayana Bidari
This CL adds support for the following fields: - RTT, RTTVar, RTO - send congestion window (sndCwnd) and send slow start threshold (sndSsthresh) - congestion control state(CaState) - ReorderSeen PiperOrigin-RevId: 354195361
2021-01-27Merge release-20210112.0-98-g8e6604474 (automated)gVisor bot
2021-01-26Initialize the send buffer handler in endpoint creation.Nayana Bidari
- This CL will initialize the function handler used for getting the send buffer size limits during endpoint creation and does not require the caller of SetSendBufferSize(..) to know the endpoint type(tcp/udp/..) PiperOrigin-RevId: 353992634
2021-01-26Merge release-20210112.0-96-gce39f8298 (automated)gVisor bot
2021-01-26Implement error on pointersTamir Duberstein
This improves type-assertion safety. PiperOrigin-RevId: 353931228
2021-01-26Merge release-20210112.0-94-g96bd076e8 (automated)gVisor bot
2021-01-26Initialize timestamps for gofer synthetic children.Dean Deng
Contrary to the comment on the socket test, the failure was due to an issue with goferfs rather than kernfs. PiperOrigin-RevId: 353918021
2021-01-26Merge release-20210112.0-93-g203890b13 (automated)gVisor bot
2021-01-26Move inotify events from syscall to vfs layer.Dean Deng
This also causes inotify events to be generated when reading files for exec. This change also requires us to adjust splice+inotify tests due to discrepancies between gVisor and Linux behavior. Note that these discrepancies existed before; we just did not exercise them previously. See comment for more details. Fixes #5348. PiperOrigin-RevId: 353907187
2021-01-26Merge release-20210112.0-91-gabdff8874 (automated)gVisor bot
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