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On ARM64, when ptrace stops on a system call, it uses the x7 register to
indicate whether the stop has been signalled from syscall entry or syscall
exit. This means that we can't get a value of this register and we can't change
it. More details are in the comment for tracehook_report_syscall in
arch/arm64/kernel/ptrace.c.
This happens only if we stop on a system call, so let's queue a signal, resume
a stub thread and catch it on a signal handling.
Fixes: #5238
PiperOrigin-RevId: 352668695
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PiperOrigin-RevId: 352624174
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IPv4 previously accepts the packet, while IPv6 panics. Neither is the behavior
in Linux.
splice() in Linux has different behavior than in gVisor. This change documents
it in the SpliceTooLong test.
Reported-by: syzbot+b550e78e5c24d1d521f2@syzkaller.appspotmail.com
PiperOrigin-RevId: 352091286
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Updates #5273
PiperOrigin-RevId: 352088736
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PiperOrigin-RevId: 352068182
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io.Writer.Write requires err to be non-nil if n < len(v).
We could allow this but it will be irreversible if users depend on this
behavior.
Ported the test that discovered this.
PiperOrigin-RevId: 352065946
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Also fix test expectation for UDP sendto() case in tuntap syscall test.
Fixes #5155
PiperOrigin-RevId: 352056612
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- Remove the pipe package's dependence on the buffer package, which becomes
unused as a result. The buffer package is currently intended to serve two use
cases, pipes and temporary buffers, and does neither optimally as a result;
this change facilitates retooling the buffer package to better serve the
latter.
- Pass callbacks taking safemem.BlockSeq to the internal pipe I/O methods,
which makes most callbacks trivial.
- Fix VFS1's splice() and tee() to immediately return if a pipe returns a
partial write.
PiperOrigin-RevId: 351911375
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Return EEXIST when overwritting a file as long as the caller has exec
permission on the parent directory, even if the caller doesn't have
write permission.
Also reordered the mount write check, which happens before permission
is checked.
Closes #5164
PiperOrigin-RevId: 351868123
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Whether the variable was found is already returned by syscall.Getenv.
os.Getenv drops this value while os.Lookupenv passes it along.
PiperOrigin-RevId: 351674032
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PiperOrigin-RevId: 351606635
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gvisor-containerd-shim is not compatible with containerd 1.1 or earlier.
Starting from containerd 1.2, shim v2 is the preferred interface.
PiperOrigin-RevId: 351485556
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This change implements TLP details enumerated in
https://tools.ietf.org/html/draft-ietf-tcpm-rack-08#section-7.5.1.
Fixes #5083
PiperOrigin-RevId: 351467357
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These are primarily simplification and lint mistakes. However, minor
fixes are also included and tests added where appropriate.
PiperOrigin-RevId: 351425971
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PiperOrigin-RevId: 350646249
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Read now takes a destination io.Writer, count, options. Keeping the method name
Read, in contrast to the Write method.
This enables:
* direct transfer of views under VV
* zero copy
It also eliminates the need for sentry to keep a slice of view because
userspace had requested a read that is smaller than the view returned, removing
the complexity there.
Read/Peek/ReadPacket are now consolidated together and some duplicate code is
removed.
PiperOrigin-RevId: 350636322
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PiperOrigin-RevId: 350509137
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PiperOrigin-RevId: 350438564
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IPv4 was always supported but UDP never supported joining/leaving IPv6
multicast groups via socket options.
Add: IPPROTO_IPV6, IPV6_JOIN_GROUP/IPV6_ADD_MEMBERSHIP
Remove: IPPROTO_IPV6, IPV6_LEAVE_GROUP/IPV6_DROP_MEMBERSHIP
Test: integration_test.TestUDPAddRemoveMembershipSocketOption
PiperOrigin-RevId: 350396072
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PiperOrigin-RevId: 350246333
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This includes minor fix-ups:
* Handle SIGTERM in runsc debug, to exit gracefully.
* Fix cmd.debug.go opening all profiles as RDONLY.
* Fix the test name in fio_test.go, and encode the block size in the test.
PiperOrigin-RevId: 350205718
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Reported-by: syzbot+814105309d2ae8651084@syzkaller.appspotmail.com
PiperOrigin-RevId: 350159452
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PiperOrigin-RevId: 349607959
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Test failure happens when `echo` writes late:
* Server nc shuts down write when it sees EOF from stdin.
* Client nc closes the connection when it detects EOF from socket and no data
in internal write buffer.
Using `-q` flag to make server not shutting down write in the beginning, while
letting connection to be closed by client. As `-q` flag's default value varies
in different netcat versions, we always specify it to prevent future breakage.
PiperOrigin-RevId: 349504016
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- Tweak the benchmarks to work with b.N where appropriate. In many cases,
b.N was simply being ignored. This creates an implicit dependency in the
user passing a reasonable benchtime (less than or equal to the actual
runtime of the test, or using the X syntax) otherwise the test runs
forever.
- In cases where the above is impossible, explicitly set benchtime from
the test wrapper, to prevent the above behavior (tensorflow).
- Drop the *Reverse variants, which are simply hey benchmarks. We should
just add a hey benchmark. The platforms benchmarks already include a
native platform, and thus these benchmarks are incredibly confusing.
(In other words, BenchmarkNginxReverse has nothing to do with an nginx
benchmark for runsc.)
- Remove the redunant Harness object, which contains no state, in order
to slightly simplify the code.
- Make Block and Heap profiling actually work, but setting appropriate
runtime parameters (and plumbing them through the config).
- Split the profiling into two phases: start and stop, since some will
need to be started early, and others will need to happen at the end.
PiperOrigin-RevId: 349495377
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PiperOrigin-RevId: 349490873
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PiperOrigin-RevId: 349458984
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PiperOrigin-RevId: 349314945
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The buildkite syscall tests start with a lot of C++ warnings. This
cleans that up a little.
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open() has to return ENXIO in this case.
O_PATH isn't supported by vfs1.
PiperOrigin-RevId: 348820478
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PiperOrigin-RevId: 348720223
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PiperOrigin-RevId: 348089449
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PiperOrigin-RevId: 348056159
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PiperOrigin-RevId: 348055514
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Closes #5048
PiperOrigin-RevId: 348050472
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When the scaled receive window size > 65535 (max uint16), we advertise
the scaled value as 65535, but are not adjusting the saved receive
window value when doing so. This would keep our current window
calculation logic to be incorrect, as the saved receive window value
is different from what was advertised.
Fixes #4903
PiperOrigin-RevId: 347771340
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PiperOrigin-RevId: 347711998
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PiperOrigin-RevId: 347650354
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There are surprisingly few syscall tests that run with hostinet. For example
running the following command only returns two results:
`bazel query test/syscalls:all | grep hostnet`
I think as a result, as our control messages evolved, hostinet was left
behind. Update it to support all control messages netstack supports.
This change also updates sentry's control message parsing logic to make it up to
date with all the control messages we support.
PiperOrigin-RevId: 347508892
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SO_OOBINLINE option is set/get as boolean value, which is the same as linux.
As we currently do not support disabling this option, we always return it as
true.
PiperOrigin-RevId: 347413905
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Adds IPv6 extension header serializer and Hop by Hop options serializer.
Add RouterAlert option serializer and use it in MLD.
Fixed #4996
Startblock:
has LGTM from marinaciocea
and then
add reviewer ghanan
PiperOrigin-RevId: 347174537
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- Skip the bazel clean command on the last run of the benchmark.
- Use --test.benchtime=1ns to force running the benchmark once
(https://github.com/golang/go/issues/32051)
PiperOrigin-RevId: 347124606
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We do not rely on error for getsockopt options(which have boolean values)
anymore. This will cause issue in sendmsg where we used to return error
for IPV6_V6Only option. Fix the panic by returning error (for sockets other
than TCP and UDP) if the address does not match the type(AF_INET/AF_INET6) of
the socket.
PiperOrigin-RevId: 347063838
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For "hey", requests >= concurrency. b.N can be set by the
--test.benchtime={b.N}x. The previous setting of b.N * c
can be surprisingly slow for larger c.
Set the requests to max(b.N, c) and log to the user if it is c.
PiperOrigin-RevId: 347053675
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PiperOrigin-RevId: 347047550
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PiperOrigin-RevId: 346973338
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Without this change, this test produces quite opaque errors as valid TCP
segments are not logged; what we see in the end is any random traffic that
happened *after* the final TCP segment.
PiperOrigin-RevId: 346864169
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PiperOrigin-RevId: 346852543
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PiperOrigin-RevId: 346840424
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PiperOrigin-RevId: 346818310
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