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Fixes #3326
PiperOrigin-RevId: 323589669
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PiperOrigin-RevId: 323553832
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PiperOrigin-RevId: 323508910
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As it happens
gvisor/tools/bazel.mk:88
useradd --uid $(UID) --non-unique --no-create-home \
adds the user-id to /var/log/lastlog which happens to be a sparse file except
Go's tar support can't handle sparse files so it actually tries to allocate
the file to seek to the end causing the VM to run out of disk space.
See:
https://github.com/moby/moby/issues/5419#issuecomment-193876183
The fix is to pass -l to useradd to prevent it from trying to add to lastlog.
Fixes #3397
PiperOrigin-RevId: 323492591
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PiperOrigin-RevId: 323491461
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PiperOrigin-RevId: 323456118
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PiperOrigin-RevId: 323455097
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PiperOrigin-RevId: 323454998
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The previous implementation of LinkAddressRequest only supported sending
broadcast ARP requests and multicast Neighbor Solicitations. The ability to
send these packets as unicast is required for Neighbor Unreachability
Detection.
Tests:
pkg/tcpip/network/arp:arp_test
- TestLinkAddressRequest
pkg/tcpip/network/ipv6:ipv6_test
- TestLinkAddressRequest
Updates #1889
Updates #1894
Updates #1895
Updates #1947
Updates #1948
Updates #1949
Updates #1950
PiperOrigin-RevId: 323451569
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TCP now tracks the overhead of the segment structure itself in it's out-of-order
queue (pending). This is required to ensure that a malicious sender sending 1
byte out-of-order segments cannot queue like 1000's of segments which bloat up
memory usage.
We also reduce the default receive window to 32KB. With TCP moderation there is
no need to keep this window at 1MB which means that for new connections the
default out-of-order queue will be small unless the application actually reads
the data that is being sent. This prevents a sender from just maliciously
filling up pending buf with lots of tiny out-of-order segments.
PiperOrigin-RevId: 323450913
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PiperOrigin-RevId: 323443142
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This PR adds the following:
- [x] Marshall-able structs for fuse headers
- [x] Data structures needed in /dev/fuse to communicate with the daemon server
- [x] Implementation of the device interface
- [x] Go unit tests
This change adds the `/dev/fuse` implementation. `Connection` controls the
communication between the server and the sentry. The FUSE server uses
the `FileDescription` interface to interact with the Sentry. The Sentry
implmenetation of fusefs, uses `Connection` and the Connection interface
to interact with the Server. All communication messages are in the form
of `go_marshal` backed structs defined in the ABI package.
This change also adds some go unit tests that test (pretty basically)
the interfaces and should be used as an example of an end to end FUSE
operation.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/3083 from ridwanmsharif:ridwanmsharif/fuse-device-impl 69aa2ce970004938fe9f918168dfe57636ab856e
PiperOrigin-RevId: 323428180
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PiperOrigin-RevId: 323426851
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PiperOrigin-RevId: 323426155
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The subsequent systrap changes will need to import memmap from
the platform package.
PiperOrigin-RevId: 323409486
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PiperOrigin-RevId: 323398518
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The bazel server was being started as the wrong user, leading to issues
where the container would suddenly exit during a build.
We can also simplify the waiting logic by starting the container in two
separate steps: those that must complete first, then the asynchronous bit.
PiperOrigin-RevId: 323391161
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PiperOrigin-RevId: 323383320
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PiperOrigin-RevId: 323381964
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Storing *testing.T on test helper structs is problematic when
subtests are used, because it is possible for nested tests to call
Fatal on parent test, which incorrect terminates the parent test.
For example
func TestOuter(t *testing.T) {
dut := NewDUT(t)
t.Run("first test", func(t *testing.T) {
dut.FallibleCall()
})
t.Run("second test", func(t *testing.T) {
dut.FallibleCall()
}
}
In the example above, assuming `FallibleCall` calls `t.Fatal` on the
`t` it holds, if `dut.FallibleCall` fails in "first test", it will
call `Fatal` on the parent `t`, quitting `TestOuter`. This is not a
behavior we want.
PiperOrigin-RevId: 323350241
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Adds profiling with `runsc debug` or pprof to dockerutil. All
targets using dockerutil should now be able to use profiling.
In addition, modifies existing benchmarks to use profiling.
PiperOrigin-RevId: 323298634
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Mark the currently passing integration/image tests for
VFS2. Bugs will be filed for remaining failing tests.
Updates #1487
PiperOrigin-RevId: 323297260
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At present, when doing syscall_kvm test, we need to
enable the function of ESR_ELx_SYS64_ISS_SYS_CNTVCT/ESR_ELx_SYS64_ISS_SYS_CNTFRQ to
successfully pass the test.
I set CNTKCTL_EL1.EL0VCTEN==1/CNTKCTL_EL1.EL0PCTEN==1, so that the related cases can passed.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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... when it is possible.
The guitar gVisorKernel*Workflow-s runs test with the local execution_method.
In this case, blaze runs test cases locally without sandboxes. This means
that all tests run in the same network namespace. We have a few tests which
use hard-coded network ports and they can fail if one of these port will be
used by someone else or by another test cases.
PiperOrigin-RevId: 323137254
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Using "--no-cache-dir" flag in pip install ,make sure dowloaded packages
by pip don't cached on system . This is a best practise which make sure
to fetch ftom repo instead of using local cached one . Further , in case
of Docker Containers , by restricing caching , we can reduce image size.
In term of stats , it depends upon the number of python packages
multiplied by their respective size . e.g for heavy packages with a lot
of dependencies it reduce a lot by don't caching pip packages.
Further , more detail information can be found at
https://medium.com/sciforce/strategies-of-docker-images-optimization-2ca9cc5719b6
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The "dev" target had been failing. The failure was being caused due to variable
overload of "RUNTIME".
PiperOrigin-RevId: 323106040
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The travis capacity is limited, but we build and test amd64 on kokoro.
PiperOrigin-RevId: 323103934
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Copy the list of tags when passing it to _syscall_test.
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Implement WalkGetAttr() to reuse the stat that is already
needed for Walk(). In addition, cache file QID, so it
doesn't need to stat the file to compute it.
open(2) time improved by 10%:
Baseline: 6780 ns
Change: 6083 ns
Also fixed file type which was not being set in all places.
PiperOrigin-RevId: 323102560
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Sending UDP packets in a loop can be done in a separate goroutine. We
can't do this in ContainerAction because the container will terminate
early.
Locally, scripts/iptables_tests.sh runs ~40 seconds faster.
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PiperOrigin-RevId: 323066414
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PiperOrigin-RevId: 322954792
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- All Marshal* and Unmarshal* methods now require buffers to be correctly sized
- Only the Copy{In/Out} variants can handle smaller buffers (or address spaces)
PiperOrigin-RevId: 322953881
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Updates #2923
PiperOrigin-RevId: 322953552
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PiperOrigin-RevId: 322937495
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PiperOrigin-RevId: 322928424
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- Check write permission on truncate(2). Unlike ftruncate(2),
truncate(2) fails if the user does not have write permissions
on the file.
- For gofers under InteropModeShared, check file type before
making a truncate request. We should fail early and avoid
making an rpc when possible. Furthermore, depending on the
remote host's failure may give us unexpected behavior--if the
host converts the truncate request to an ftruncate syscall on
an open fd, we will get EINVAL instead of EISDIR.
Updates #2923.
PiperOrigin-RevId: 322913569
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Fix typos.
PiperOrigin-RevId: 322913282
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Changes the API of tcpip.Clock to also provide a method for scheduling and
rescheduling work after a specified duration. This change also implements the
AfterFunc method for existing implementations of tcpip.Clock.
This is the groundwork required to mock time within tests. All references to
CancellableTimer has been replaced with the tcpip.Job interface, allowing for
custom implementations of scheduling work.
This is a BREAKING CHANGE for clients that implement their own tcpip.Clock or
use tcpip.CancellableTimer. Migration plan:
1. Add AfterFunc(d, f) to tcpip.Clock
2. Replace references of tcpip.CancellableTimer with tcpip.Job
3. Replace calls to tcpip.CancellableTimer#StopLocked with tcpip.Job#Cancel
4. Replace calls to tcpip.CancellableTimer#Reset with tcpip.Job#Schedule
5. Replace calls to tcpip.NewCancellableTimer with tcpip.NewJob.
PiperOrigin-RevId: 322906897
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For some reason these tests were broken when run via the bazel docker
container. The mechanism used was a bit crazy (self-extracting bundle),
so convert them to use straight-forward starlark rules. This has the
added advantaged that they are now independent tests.
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PiperOrigin-RevId: 322904430
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PiperOrigin-RevId: 322890087
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Like task_work in Linux, this allows us to register callbacks to be executed
before returning to userspace. This is needed for kcov support, which requires
coverage information to be up-to-date whenever we are in user mode. We will
provide coverage data through the kcov interface to enable coverage-directed
fuzzing in syzkaller.
One difference from Linux is that task work cannot queue work before the
transition to userspace that it precedes; queued work will be picked up before
the next transition.
PiperOrigin-RevId: 322889984
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PiperOrigin-RevId: 322888057
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This patch load/save TLS for the container application.
Related issue: full context-switch supporting for Arm64 #1238
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/2761 from lubinszARM:pr_tls_2 cb5dbca1c9c3f378002406da7a58887f9b5032b3
PiperOrigin-RevId: 322887044
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PiperOrigin-RevId: 322882426
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Allow FUSE filesystems to be mounted using libfuse.
The appropriate flags and mount options are parsed and
understood by fusefs.
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PiperOrigin-RevId: 322859907
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PiperOrigin-RevId: 322853192
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