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2021-07-13Merge release-20210705.0-19-gc16e69a9d (automated)gVisor bot
2021-07-13Use consistent naming for subcontainersFabricio Voznika
It was confusing to find functions relating to root and non-root containers. Replace "non-root" and "subcontainer" and make naming consistent in Sandbox and controller. PiperOrigin-RevId: 384512518
2021-07-13Merge release-20210705.0-18-g1fe6db8c5 (automated)gVisor bot
2021-07-13netstack: atomically update buffer sizesKevin Krakauer
Previously, two calls to set the send or receive buffer size could have raced and left state wherein: - The actual size depended on one call - The value returned by getsockopt() depended on the other PiperOrigin-RevId: 384508720
2021-07-13Merge release-20210705.0-17-gb4caeaf78 (automated)gVisor bot
2021-07-13Deflake TestRouterSolicitationGhanan Gowripalan
Before this change, transmission of the first router solicitation races with the adding of an IPv6 link-local address. This change creates the NIC in the disabled state and is only enabled after the address is added (if required) to avoid this race. PiperOrigin-RevId: 384493553
2021-07-13Merge release-20210705.0-16-ge35d20f79 (automated)gVisor bot
2021-07-12netstack: move SO_SNDBUF/RCVBUF clamping logic out of //pkg/tcpipKevin Krakauer
- Keeps Linux-specific behavior out of //pkg/tcpip - Makes it clearer that clamping is done only for setsockopt calls from users - Removes code duplication PiperOrigin-RevId: 384389809
2021-07-13Merge release-20210705.0-15-g520795aaa (automated)gVisor bot
2021-07-12Fix deadlock in procfsFabricio Voznika
Kernfs provides an internal mechanism to defer calls to `DecRef()` because on the last reference `Filesystem.mu` must be held and most places that need to call `DecRef()` are inside the lock. The same can be true for filesystems that extend kernfs. procfs needs to look up files and `DecRef()` them inside the `kernfs.Filesystem.mu`. If the files happen to be procfs files, it can deadlock trying to decrement if it's the last reference. This change extends the mechanism to external callers to defer DecRefs to `vfs.FileDescription` and `vfs.VirtualDentries`. PiperOrigin-RevId: 384361647
2021-07-13Merge release-20210705.0-14-g275932bf0 (automated)gVisor bot
2021-07-12Drop dedicated benchmark lifecycle.Adin Scannell
Instead, roll the output scraping into the main runner. Pass a perf flag to the runner in order to control leak checking, apply tags via the macro and appropriately disable logging. This may be removed in the future. PiperOrigin-RevId: 384348035
2021-07-12Fix stdios ownershipFabricio Voznika
Set stdio ownership based on the container's user to ensure the user can open/read/write to/from stdios. 1. stdios in the host are changed to have the owner be the same uid/gid of the process running the sandbox. This ensures that the sandbox has full control over it. 2. stdios owner owner inside the sandbox is changed to match the container's user to give access inside the container and make it behave the same as runc. Fixes #6180 PiperOrigin-RevId: 384347009
2021-07-12Merge release-20210705.0-12-g7132b9a07 (automated)gVisor bot
2021-07-12Fix GoLand analyzer errors under runsc/...Fabricio Voznika
PiperOrigin-RevId: 384344990
2021-07-12Merge release-20210705.0-11-ge3fdd1593 (automated)gVisor bot
2021-07-12[syserror] Update syserror to linuxerr for more errors.Zach Koopmans
Update the following from syserror to the linuxerr equivalent: EEXIST EFAULT ENOTDIR ENOTTY EOPNOTSUPP ERANGE ESRCH PiperOrigin-RevId: 384329869
2021-07-12Merge release-20210705.0-10-gebe99977a (automated)gVisor bot
2021-07-12Mark all functions that are called from a forked child with go:noraceAndrei Vagin
PiperOrigin-RevId: 384305599
2021-07-12Merge release-20210705.0-9-g9c09db654 (automated)gVisor bot
2021-07-12Fix async-signal-unsafety in chroot test.Jamie Liu
PiperOrigin-RevId: 384295543
2021-07-12Merge release-20210705.0-8-g4742f7d78 (automated)gVisor bot
2021-07-12Prevent interleaving in sniffer pcap outputTamir Duberstein
Remove "partial write" handling as io.Writer.Write is not permitted to return a nil error on partial writes, and this code was already panicking on non-nil errors. PiperOrigin-RevId: 384289970
2021-07-12Merge release-20210705.0-7-g1f396d8c1 (automated)gVisor bot
2021-07-12Prevent the cleanup script from destroying any "bootstrap" containers.Adin Scannell
PiperOrigin-RevId: 384257460
2021-07-12Merge release-20210628.0-35-g36a17a814 (automated)gVisor bot
2021-07-12Go 1.17 support for the KVM platformMichael Pratt
Go 1.17 adds a new register-based calling convention. While transparent for most applications, the KVM platform needs special work in a few cases. First of all, we need the actual address of some assembly functions, rather than the address of a wrapper. See http://gvisor.dev/pr/5832 for complete discussion of this. More relevant to this CL is that ABI0-to-ABIInternal wrappers (i.e., calls from assembly to Go) access the G via FS_BASE. The KVM quite fast-and-loose about the Go environment, often calling into (nosplit) Go functions with uninitialized FS_BASE. That will no longer work in Go 1.17, so this CL changes the platform to consistently restore FS_BASE before calling into Go code. This CL does not affect arm64 code. Go 1.17 does not support the register-based calling convention for arm64 (it will come in 1.18), but arm64 also does not use a non-standard register like FS_BASE for TLS, so it may not require any changes. PiperOrigin-RevId: 384234305
2021-07-09Merge release-20210628.0-34-gd78713e2d (automated)gVisor bot
2021-07-09Drop unnecessary checklocksignore.Adin Scannell
PiperOrigin-RevId: 383940663
2021-07-09Merge release-20210628.0-33-gde29d8d41 (automated)gVisor bot
2021-07-08Fix some //pkg/seccomp bugs.Jamie Liu
- LockOSThread() around prctl(PR_SET_NO_NEW_PRIVS) => seccomp(). go:nosplit "mostly" prevents async preemption, but IIUC preemption is still permitted during function prologues: funcpctab "".seccomp [valfunc=pctopcdata] 0 -1 00000 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) TEXT "".seccomp(SB), NOSPLIT|ABIInternal, $72-32 0 00000 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) TEXT "".seccomp(SB), NOSPLIT|ABIInternal, $72-32 0 -1 00000 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) SUBQ $72, SP 4 00004 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) MOVQ BP, 64(SP) 9 00009 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) LEAQ 64(SP), BP e 00014 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) FUNCDATA $0, gclocals·ba30782f8935b28ed1adaec603e72627(SB) e 00014 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) FUNCDATA $1, gclocals·663f8c6bfa83aa777198789ce63d9ab4(SB) e 00014 (gvisor/pkg/seccomp/seccomp_unsafe.go:110) FUNCDATA $2, "".seccomp.stkobj(SB) e 00014 (gvisor/pkg/seccomp/seccomp_unsafe.go:111) PCDATA $0, $-2 e -2 00014 (gvisor/pkg/seccomp/seccomp_unsafe.go:111) MOVQ "".ptr+88(SP), AX (-1 is objabi.PCDATA_UnsafePointSafe and -2 is objabi.PCDATA_UnsafePointUnsafe, from Go's cmd/internal/objabi.) - Handle non-errno failures from seccomp() with SECCOMP_FILTER_FLAG_TSYNC. PiperOrigin-RevId: 383757580
2021-07-09Merge release-20210628.0-32-gf8207a823 (automated)gVisor bot
2021-07-08clarify safemount behaviorKevin Krakauer
PiperOrigin-RevId: 383750666
2021-07-08Merge release-20210628.0-31-g052eb90dc (automated)gVisor bot
2021-07-08Replace kernel.ExitStatus with linux.WaitStatus.Jamie Liu
PiperOrigin-RevId: 383705129
2021-07-08Merge release-20210628.0-30-gfbd4ccf33 (automated)gVisor bot
2021-07-08Fix async-signal-unsafety in socket test.Jamie Liu
PiperOrigin-RevId: 383689096
2021-07-08Merge release-20210628.0-29-g07f2c8b56 (automated)gVisor bot
2021-07-08devpts: Notify of echo'd input queue bytes only after locks have been released.Etienne Perot
PiperOrigin-RevId: 383684320
2021-07-08Merge release-20210628.0-28-g1fc7a9eac (automated)gVisor bot
2021-07-08Do not queue zero sized segments.Bhasker Hariharan
Commit 16b751b6c610ec2c5a913cb8a818e9239ee7da71 introduced a bug where writes of zero size would end up queueing a zero sized segment which will cause the sandbox to panic when trying to send a zero sized segment(e.g. after an RTO) as netstack asserts that the all non FIN segments have size > 0. This change adds the check for a zero sized payload back to avoid queueing such segments. The associated test panics without the fix and passes with it. PiperOrigin-RevId: 383677884
2021-07-07Merge release-20210628.0-27-g02fec8dba (automated)gVisor bot
2021-07-07Move time.Now() call to snifferTamir Duberstein
PiperOrigin-RevId: 383481745
2021-07-07Merge release-20210628.0-26-gcd558fcb0 (automated)gVisor bot
2021-07-07Sentry: Measure the time it takes to initialize the Sentry.Etienne Perot
PiperOrigin-RevId: 383472507
2021-07-07Merge release-20210628.0-25-gb63631b46 (automated)gVisor bot
2021-07-07Use time package-level variableTamir Duberstein
PiperOrigin-RevId: 383426091
2021-07-03Merge release-20210628.0-24-gadd8bca5b (automated)gVisor bot
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
2021-07-03Merge release-20210628.0-23-g3d32a05a3 (automated)gVisor bot
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