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2021-02-17Merge release-20210208.0-63-g4bc7daf91 (automated)gVisor bot
2021-02-17Check for directory emptiness in VFS1 overlay rmdir().Jamie Liu
Note that this CL reorders overlayEntry.copyMu before overlayEntry.dirCacheMu in the overlayFileOperations.IterateDir() => readdirEntries() path - but this lock ordering is already required by overlayRemove/Bind() => overlayEntry.markDirectoryDirty(), so this actually just fixes an inconsistency. PiperOrigin-RevId: 358047121
2021-02-12Merge release-20210208.0-52-g845d0a65f (automated)gVisor bot
2021-02-11[rack] TLP: ACK Processing and PTO scheduling.Ayush Ranjan
This change implements TLP details enumerated in https://tools.ietf.org/html/draft-ietf-tcpm-rack-08#section-7.5.3 Fixes #5085 PiperOrigin-RevId: 357125037
2021-02-12Merge release-20210201.0-92-g34614c398 (automated)gVisor bot
2021-02-11Unconditionally check for directory-ness in overlay.filesystem.UnlinkAt().Jamie Liu
PiperOrigin-RevId: 357106080
2021-02-12Merge release-20210201.0-90-g4314bb0b2 (automated)gVisor bot
2021-02-11Internal change.gVisor bot
PiperOrigin-RevId: 357090170
2021-02-11Merge release-20210201.0-87-gc833eed80 (automated)gVisor bot
2021-02-11Implement semtimedop.Jing Chen
PiperOrigin-RevId: 357031904
2021-02-11Merge release-20210201.0-86-gae8d966f5 (automated)gVisor bot
2021-02-11Assign controlling terminal when tty is opened and support NOCTTYKevin Krakauer
PiperOrigin-RevId: 357015186
2021-02-11Merge release-20210201.0-84-g81ea0016e (automated)gVisor bot
2021-02-10Support setgid directories in tmpfs and kernfsKevin Krakauer
PiperOrigin-RevId: 356868412
2021-02-11Merge release-20210201.0-82-g97a36d169 (automated)gVisor bot
2021-02-10Don't allow to umount the namespace root mountAndrei Vagin
Linux does the same thing. Reported-by: syzbot+6c79385c930c929d1d9e@syzkaller.appspotmail.com PiperOrigin-RevId: 356854562
2021-02-10Merge release-20210201.0-75-gb9db7db3b (automated)gVisor bot
2021-02-10Merge pull request #5267 from lubinszARM:pr_usr_lazy_fpgVisor bot
PiperOrigin-RevId: 356762859
2021-02-10Merge release-20210201.0-72-g298c129cc (automated)gVisor bot
2021-02-09Add support for setting SO_SNDBUF for unix domain sockets.Bhasker Hariharan
The limits for snd/rcv buffers for unix domain socket is controlled by the following sysctls on linux - net.core.rmem_default - net.core.rmem_max - net.core.wmem_default - net.core.wmem_max Today in gVisor we do not expose these sysctls but we do support setting the equivalent in netstack via stack.Options() method. But AF_UNIX sockets in gVisor can be used without netstack, with hostinet or even without any networking stack at all. Which means ideally these sysctls need to live as globals in gVisor. But rather than make this a big change for now we hardcode the limits in the AF_UNIX implementation itself (which in itself is better than where we were before) where it SO_SNDBUF was hardcoded to 16KiB. Further we bump the initial limit to a default value of 208 KiB to match linux from the paltry 16 KiB we use today. Updates #5132 PiperOrigin-RevId: 356665498
2021-02-10Merge release-20210201.0-70-gf6de413c3 (automated)gVisor bot
2021-02-09Add cleanup TODO for integer-based proc files.Dean Deng
PiperOrigin-RevId: 356645022
2021-02-09Merge release-20210201.0-65-g2b978d874 (automated)gVisor bot
2021-02-09Collapse code that always returns errorTamir Duberstein
PiperOrigin-RevId: 356536548
2021-02-09Merge release-20210201.0-64-gfe4f47896 (automated)gVisor bot
2021-02-09kernel: reparentLocked has to update children maps of old and new parentsAndrei Vagin
Reported-by: syzbot+9ffc71246fe72c73fc25@syzkaller.appspotmail.com PiperOrigin-RevId: 356536113
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
2021-02-03arm64 kvm:implement basic lazy save and restore for FPSIMD registersRobin Luk
Implement basic lazy save and restore for FPSIMD registers, which only restore FPSIMD state on el0_fpsimd_acc and save FPSIMD state in switch(). Signed-off-by: Robin Luk <lubin.lu@antgroup.com>
2021-02-03arm64: clean codeRobin Luk
In order to improve the performance and stability, I reorg 2 modules slightly. arch: no red zone on Arm64. ring0: use stp instead of movd, and set RSV_REG_APP=R19. Signed-off-by: Robin Luk <lubin.lu@antgroup.com>
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
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