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in tests
This change updates the testenv tests to correctly match on future LUCI
builder names for mobile builders. This isn't a problem today because
those haven't been set up yet, but the builder names are structured and
it's clear where the modifiers will appear. Might as well set them up
now.
For #65473.
Fixes #65474.
Change-Id: I244b88a62a90312c0f3ff2360527d58531070362
Reviewed-on: https://go-review.googlesource.com/c/go/+/558597
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
(cherry picked from commit 5c7c24ce827b10982245951f6c2b1bbf0abc5aae)
Reviewed-on: https://go-review.googlesource.com/c/go/+/560536
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name in test
testenv's TestHasGoBuild test is supposed to allow noopt builders to not
have go build, but the pattern match is failing on the LUCI builders
where a test shard might have an additional "-test_only" suffix in the
builder name. Furthermore, in the LUCI world, "run mods" (the builder
type suffixes) are supposed to be well-defined and composable, so it
doesn't make sense to restrict "-noopt" to the builder suffix anyway.
This change modifies the test to allow "-noopt" to appear anywhere in
the builder name when checking if it's running on a noopt builder.
For #65470.
Fixes #65471.
Change-Id: I393818e3e8e452c7b0927cbc65726d552aa8ff8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/558596
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
(cherry picked from commit 93f0c0b25e7ea8ae7c2d5df32c6083cfabf2ffc2)
Reviewed-on: https://go-review.googlesource.com/c/go/+/560696
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While at it, set the date to the Go 1.22 release date.
Change-Id: I03872626e500433eb63786d24c67810c8c6289f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/562337
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/562320
Reviewed-by: Russ Cox <rsc@golang.org>
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Change-Id: If7b9fa19ee424d94e1c259e1867b89e8bda7fcde
Reviewed-on: https://go-review.googlesource.com/c/go/+/562276
Auto-Submit: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
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This is necessary for go generate to enter workspace mode for
recognizing package paths in the workspace.
For #56098
Fixes #65352
Change-Id: I25f68de24f4189259353f63194823516e9d3d505
Reviewed-on: https://go-review.googlesource.com/c/go/+/559195
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
(cherry picked from commit b91bad78199aaf8baeb66cb8a30f51b89b8f90ee)
Reviewed-on: https://go-review.googlesource.com/c/go/+/559236
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steals
Currently there are a few places where a P can get stolen where the
runtime doesn't traceAcquire and traceRelease across the steal itself.
What can happen then is the following scenario:
- Thread 1 enters a syscall and writes an event about it.
- Thread 2 steals Thread 1's P.
- Thread 1 exits the syscall and writes one or more events about it.
- Tracing ends (trace.gen is set to 0).
- Thread 2 checks to see if it should write an event for the P it just
stole, sees that tracing is disabled, and doesn't.
This results in broken traces, because there's a missing ProcSteal
event. The parser always waits for a ProcSteal to advance a
GoSyscallEndBlocked event, and in this case, it never comes.
Fixes #65181.
Change-Id: I437629499bb7669bf7fe2fc6fc4f64c53002916b
Reviewed-on: https://go-review.googlesource.com/c/go/+/560235
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
(cherry picked from commit c9d88ea2aa628cae224335c49f256e13adfce337)
Reviewed-on: https://go-review.googlesource.com/c/go/+/559958
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Currently the trace map is cleared with an assignment, but this ends up
invoking write barriers. Theoretically, write barriers could try to
write a trace event and eventually try to acquire the same lock. The
static lock ranking expresses this constraint.
This change replaces the assignment with a call to memclrNoHeapPointer
to clear the map, removing the write barriers.
Note that technically this problem is purely theoretical. The way the
trace maps are used today is such that reset is only ever called when
the tracer is no longer writing events that could emit data into a map.
Furthermore, reset is never called from an event-writing context.
Therefore another way to resolve this is to simply not hold the trace
map lock over the reset operation. However, this makes the trace map
implementation less robust because it needs to be used in a very
specific way. Furthermore, the rest of the trace map code avoids write
barriers already since its internal structures are all notinheap, so
it's actually more consistent to just avoid write barriers in the reset
method.
Fixes #56554.
Change-Id: Icd86472e75e25161b2c10c1c8aaae2c2fed4f67f
Reviewed-on: https://go-review.googlesource.com/c/go/+/560216
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
(cherry picked from commit 829f2ce3ba33a09a7975139a0a33d462bb3114db)
Reviewed-on: https://go-review.googlesource.com/c/go/+/559957
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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function
Currently the stop reason for runtime.Gosched is labeled
"runtime.GoSched" which doesn't actually match the function name. Fix
the label to match the function name.
This change doesn't regenerate the internal/trace/v2 tests, because
regenerating the tests breaks summarization tests in internal/trace that
rely on very specific details in the example traces that aren't
guaranteed. Also, go122-gc-trace.test isn't generated at all, as it
turns out. I'll fix this all up in a follow-up CL. For now, just replace
runtime.GoSched with runtime.Gosched in the traces so we don't have a
problem later if a test wants to look for that string.
This change does regenerate the cmd/trace/v2 test, but it turns out the
cmd/trace/v2 tests are way too strict about network unblock events, and
3 usually pop up instead of 1 or 2, which is what the test expects.
AFAICT this looks plausible to me, so just lift the restriction on
"up to 2" events entirely.
Change-Id: Id7350132be19119c743c259f2f5250903bf41a04
Reviewed-on: https://go-review.googlesource.com/c/go/+/552275
TryBot-Bypass: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
(cherry picked from commit 287f791845ac0311012814f4419d5e043c212d17)
Reviewed-on: https://go-review.googlesource.com/c/go/+/560555
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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Currently the flight recorder tests are failing in race mode because the
race detector doesn't see s.lock, leading to false positives. This has
also appeared in the trace tests. Model the lock in the race detector.
Fixes #65207.
Fixes #65283.
Change-Id: I1e9a5c9606536f55fdfc46b5f8443e9c7213c23d
Reviewed-on: https://go-review.googlesource.com/c/go/+/560215
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
(cherry picked from commit 0b12e3d81cdba8a5676d6d61970d3dc5cb1462ac)
Reviewed-on: https://go-review.googlesource.com/c/go/+/559956
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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The proposal discussion made clear that suffixes should be accepted,
so that people who use custom VERSION files can still pass runtime.Version()
to this code. But we forgot to do that in the CL. Do that.
Note that cmd/go also strips space- and tab-prefixed suffixes,
but go.dev/doc/toolchain only mentions dash, so this code only
strips dash.
Fixes #65061.
Change-Id: I6a427b78f964eb41c024890dae30223beaef13eb
Cq-Include-Trybots: luci.golang.try:go1.22-linux-amd64-longtest,go1.22-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/559796
TryBot-Bypass: Russ Cox <rsc@golang.org>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/559802
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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integer
Also: report language version (plus date) in spec header.
For #65137.
Change-Id: I4f1d220d5922c40a36264df2d0a7bb7cd0756bac
Reviewed-on: https://go-review.googlesource.com/c/go/+/557596
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/559875
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flag when downloading a module to determine what toolchain it needs
Fixes #64282.
Change-Id: I3f211c599ee70cb58254d0bc07eeb3c135124e58
Reviewed-on: https://go-review.googlesource.com/c/go/+/555436
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
(cherry picked from commit cc38c68ae09fa591697a4239a7dedd2efe386995)
Reviewed-on: https://go-review.googlesource.com/c/go/+/559218
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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fips-20220613" +1
This reverts commit 7383b2a4db5dc93c9b875b42d5add73d27cc4b9f
("crypto/internal/boring: upgrade module to fips-20220613") and commit
4106de901a8efe914cda6f6c4e8d45ff8c115da4 ("crypto/tls: align FIPS-only
mode with BoringSSL policy").
Fixes #65324
Updates #65321
Updates #64717
Updates #62372
Change-Id: I0938b97e5b4904e6532448b8ae76e920d03d0508
Reviewed-on: https://go-review.googlesource.com/c/go/+/558796
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
(cherry picked from commit 09b5de48e64e67db92b31eaca054c5d096e3c057)
Reviewed-on: https://go-review.googlesource.com/c/go/+/558797
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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This reverts CL 514235. Also reverts CL 518056 which is a followup
fix.
Reason for revert: Proposal #50102 defined an interface that is
too specific to UNIX-y systems and also didn't make much sense.
The proposal is un-accepted, and we'll revisit in Go 1.23.
Fixes #65245.
Updates #50102.
Change-Id: I41ba0ee286c1d893e6564a337e5d76418d19435d
Reviewed-on: https://go-review.googlesource.com/c/go/+/558295
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
(cherry picked from commit 5000b5168037d26a796da46a07088e834c3af1a0)
Reviewed-on: https://go-review.googlesource.com/c/go/+/558296
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Change-Id: Iac7129fa56d739ead8bac461e178b0e23104bcc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/558235
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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This was an oversight in porting over cmd/trace to the new trace format
and API.
Fixes #65153.
Change-Id: I883d302f95956fcc9abb60aa53165acb6d099d67
Reviewed-on: https://go-review.googlesource.com/c/go/+/557175
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
(cherry picked from commit 7cb98c1da1d38447a272c50b2a33634ebb845aa4)
Reviewed-on: https://go-review.googlesource.com/c/go/+/557817
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
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profile in a trace
Currently the new execution tracer's handling of CPU profile samples is
very best-effort. The same CPU profile buffer is used across
generations, leading to a high probability that CPU samples will bleed
across generations. Also, because the CPU profile buffer (not the trace
buffer the samples get written into) isn't guaranteed to be flushed when
we close out a generation, nor when tracing stops. This has led to test
failures, but can more generally just lead to lost samples.
In general, lost samples are considered OK. The CPU profile buffer is
only read from every 100 ms, so if it fills up too much before then, old
samples will get overwritten. The tests already account for this, and in
that sense the CPU profile samples are already best-effort. But with
actual CPU profiles, this is really the only condition under which
samples are dropped.
This CL aims to align CPU profiles better with traces by eliminating
all best-effort parts of the implementation aside from the possibility
of dropped samples from a full buffer.
To achieve this, this CL adds a second CPU profile buffer and has the
SIGPROF handler pick which CPU profile buffer to use based on the
generation, much like every other part of the tracer. The SIGPROF
handler then reads the trace generation, but not before ensuring it
can't change: it grabs its own thread's trace seqlock. It's possible
that a SIGPROF signal lands while this seqlock is already held by the
thread. Luckily this is detectable and the SIGPROF handler can simply
elide the locking if this happens (the tracer will already wait until
all threads exit their seqlock critical section).
Now that there are two CPU profile buffers written to, the read side
needs to change. Instead of calling traceAcquire/traceRelease for every
single CPU sample event, the trace CPU profile reader goroutine holds
this conceptual lock over the entirety of flushing a buffer. This means
it can pick the CPU profile buffer for the current generation to flush.
With all this machinery in place, we're now at a point where all CPU
profile samples get divided into either the previous generation or the
current generation. This is good, since it means that we're able to
emit profile samples into the correct generation, avoiding surprises in
the final trace. All that's missing is to flush the CPU profile buffer
from the previous generation, once the runtime has moved on from that
generation. That is, when the generation counter updates, there may yet
be CPU profile samples sitting in the last generation's buffer. So,
traceCPUFlush now first flushes the CPU profile buffer, followed by any
trace buffers containing CPU profile samples.
The end result of all this is that no sample gets left behind unless it
gets overwritten in the CPU profile buffer in the first place. CPU
profile samples in the trace will now also get attributed to the right
generation, since the SIGPROF handler now participates in the tracer's
synchronization across trace generations.
Fixes #55317.
Change-Id: I47719fad164c544eef0bb12f99c8f3c15358e344
Reviewed-on: https://go-review.googlesource.com/c/go/+/555495
Auto-Submit: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
(cherry picked from commit f5e475edafd4186c51aadf2e7fdf164eb365379f)
Reviewed-on: https://go-review.googlesource.com/c/go/+/557838
Reviewed-by: Cherry Mui <cherryyz@google.com>
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when internal linking
TestCallbackCallersSEH is flaky when using the internal linker. Skip
it for now until the flakiness is resolved.
Updates #65116
Change-Id: I7628b07eaff8be00757d5604722f30aede25fce5
Reviewed-on: https://go-review.googlesource.com/c/go/+/556635
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
(cherry picked from commit adead1a93f472affa97c494ef19f2f492ee6f34a)
Reviewed-on: https://go-review.googlesource.com/c/go/+/557815
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goroutines in traces
Earlier in the development of the new tracer, m.id was used as a the
canonical ID for threads. Later, we switched to m.procid because it
matches the underlying OS resource. However, in that switch, we missed a
spot.
The tracer catches and emits statuses for goroutines that have remained
in either waiting or syscall across a whole generation, and emits a
thread ID for the latter set. The ID being used here, however, was m.id
instead of m.procid, like the rest of the tracer.
This CL also adds a regression test. In order to make the regression
test actually catch the failure, we also have to make the parser a
little less lenient about GoStatus events with GoSyscall: if this isn't
the first generation, then we should've seen the goroutine bound to an
M already when its status is getting emitted for its context. If we emit
the wrong ID, then we'll catch the issue when we emit the right ID when
the goroutine exits the syscall.
Fixes #65196.
Change-Id: I78b64fbea65308de5e1291c478a082a732a8bf9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/557456
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
(cherry picked from commit c46966653f6144e20f8b9bccb96e7a7f1d32aeb9)
Reviewed-on: https://go-review.googlesource.com/c/go/+/557436
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The motivation is the same as in the commit message of CL 511317.
For #61422.
Change-Id: I0e86cf35ec3501a931d6d7fffb0c83f3e57106e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/557515
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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For #61422
Change-Id: I50e427b78a533c3196aeb5291a34c05528ee0bed
Reviewed-on: https://go-review.googlesource.com/c/go/+/557475
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Change-Id: Icc6bf5dba9eae08fa3e4b63414f409727efb5197
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This works around an apparent bug in the Git HTTP backend, introduced
in Git 2.21, that causes responses for the version 1 protocol to
provide incomplete tags.
For Git commands older than 2.18, this configuration flag is ignored.
(Note that Git 2.29 and above already use protocol version 2 by
default.)
Fixes #56881.
Change-Id: I9b241cfb604e5f633ca6a5d799df6706246684a7
Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/go/+/556358
Run-TryBot: Bryan Mills <bcmills@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
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Add missing checks for the case where the range expression is
a (possibly untyped) constant integer expression.
Add context parameter to assignVar for better error message
where the expression is part of a range clause.
Also, rename s/expr/Expr/ where it denotes an AST expression,
for clarity.
Fixes #65133.
For #65137.
Change-Id: I72962d76741abe79f613e251f7b060e99261d3ae
Reviewed-on: https://go-review.googlesource.com/c/go/+/556398
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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For #61422
Change-Id: Ide818366b035eada4ba04b70b4741fb1891585d6
Reviewed-on: https://go-review.googlesource.com/c/go/+/556396
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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For #61422
Change-Id: If9c3d3ccbfb2061f42ffc26461209c96d38020e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/556395
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
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Updates #25448
Change-Id: Ia1b7a376f5175f67e14ad4bd065d6e8ad5250d38
Reviewed-on: https://go-review.googlesource.com/c/go/+/536955
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
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Very occasionally, at least on linux/386, strace itself will crash in
TestUsingVDSO. Detect these crashes and just skip the test.
Fixes #63734.
Change-Id: I050494459d47dd96c0b8dc0b16353cb532fba93e
Reviewed-on: https://go-review.googlesource.com/c/go/+/556357
Auto-Submit: Austin Clements <austin@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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This test exercises the SIGQUIT crash loop and managed to trigger the
race from #65138 at least once.
For #65138.
Fixes #64752.
Change-Id: I11091510aa7ae4f58b1d748e53df2e3e3dbfb323
Reviewed-on: https://go-review.googlesource.com/c/go/+/556356
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Change-Id: Iebe79be01eb5208e9b9dea9297c464fe2b2dd3dd
GitHub-Last-Rev: 875ab08627b1fb0db3dc2a14ac332fdbc9af8b4b
GitHub-Pull-Request: golang/go#65017
Reviewed-on: https://go-review.googlesource.com/c/go/+/554595
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
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types2.Unalias is not needed if we know we have a core or underlying
type. Also, types of declared functions (signatures) cannot be aliases
(this includes tuples).
Fixes #65125.
Change-Id: I1faa26b66f6c646719e830dd661136fae86f3775
Reviewed-on: https://go-review.googlesource.com/c/go/+/556036
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And add a missing code tag wrap elsewhere.
Updates #61410
Updates #61422
Change-Id: I70a9c4ecaf4056af2e88d777b8db892a45dfcb9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/552195
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Add godoc links from io/fs to testing/fstest for discoverability.
Change-Id: I6550b4b703d2214faa732987ec8630ac903705b5
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Change-Id: I8fe66326994894b17ce0eda991bba942844d26b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/541475
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Change-Id: Ifc472ed4cf0433d06f43559930ac80df23656a6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/555496
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This addresses some panics (out of bounds slice accesses and nil pointer
dereferences) when parsing malformed data. These were found via light
fuzzing, not by any rigorous means, and more potential panics probably
exist.
Fixes #64878.
Fixes #64879.
Change-Id: I4085788ba7dc91fec62e4abd88f50777577db42f
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Most libraries don't consider N secret, but it's arguably useful for
privacy applications. However, E should generally be fixed, and there is
a lot of performance to be gained by using variable-time exponentiation.
The threshold trick is from BoringSSL.
goos: linux
goarch: amd64
pkg: crypto/rsa
cpu: Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
│ old │ new │
│ sec/op │ sec/op vs base │
DecryptPKCS1v15/2048-4 1.398m ± 0% 1.396m ± 4% ~ (p=0.853 n=10)
DecryptPKCS1v15/3072-4 3.640m ± 0% 3.652m ± 1% ~ (p=0.063 n=10)
DecryptPKCS1v15/4096-4 7.756m ± 0% 7.764m ± 0% ~ (p=0.853 n=10)
EncryptPKCS1v15/2048-4 175.50µ ± 0% 39.37µ ± 0% -77.57% (p=0.000 n=10)
DecryptOAEP/2048-4 1.375m ± 0% 1.371m ± 1% ~ (p=0.089 n=10)
EncryptOAEP/2048-4 177.64µ ± 0% 41.17µ ± 1% -76.82% (p=0.000 n=10)
SignPKCS1v15/2048-4 1.419m ± 0% 1.393m ± 1% -1.84% (p=0.000 n=10)
VerifyPKCS1v15/2048-4 173.70µ ± 1% 38.28µ ± 2% -77.96% (p=0.000 n=10)
SignPSS/2048-4 1.437m ± 1% 1.413m ± 0% -1.64% (p=0.000 n=10)
VerifyPSS/2048-4 176.83µ ± 1% 43.08µ ± 5% -75.64% (p=0.000 n=10)
This finally makes everything in crypto/rsa faster than it was in Go 1.19.
goos: linux
goarch: amd64
pkg: crypto/rsa
cpu: Intel(R) Core(TM) i5-7400 CPU @ 3.00GHz
│ go1.19.txt │ go1.20.txt │ go1.21.txt │ new.txt │
│ sec/op │ sec/op vs base │ sec/op vs base │ sec/op vs base │
DecryptPKCS1v15/2048-4 1.458m ± 0% 1.597m ± 1% +9.50% (p=0.000 n=10) 1.395m ± 1% -4.30% (p=0.000 n=10) 1.396m ± 4% -4.25% (p=0.002 n=10)
DecryptPKCS1v15/3072-4 4.023m ± 1% 5.332m ± 1% +32.53% (p=0.000 n=10) 3.649m ± 1% -9.30% (p=0.000 n=10) 3.652m ± 1% -9.23% (p=0.000 n=10)
DecryptPKCS1v15/4096-4 8.710m ± 1% 11.937m ± 1% +37.05% (p=0.000 n=10) 7.564m ± 1% -13.16% (p=0.000 n=10) 7.764m ± 0% -10.86% (p=0.000 n=10)
EncryptPKCS1v15/2048-4 51.79µ ± 0% 267.68µ ± 0% +416.90% (p=0.000 n=10) 176.42µ ± 0% +240.67% (p=0.000 n=10) 39.37µ ± 0% -23.98% (p=0.000 n=10)
DecryptOAEP/2048-4 1.461m ± 0% 1.613m ± 1% +10.37% (p=0.000 n=10) 1.415m ± 0% -3.13% (p=0.000 n=10) 1.371m ± 1% -6.18% (p=0.000 n=10)
EncryptOAEP/2048-4 54.24µ ± 0% 269.19µ ± 0% +396.28% (p=0.000 n=10) 177.31µ ± 0% +226.89% (p=0.000 n=10) 41.17µ ± 1% -24.10% (p=0.000 n=10)
SignPKCS1v15/2048-4 1.510m ± 0% 1.705m ± 0% +12.93% (p=0.000 n=10) 1.423m ± 1% -5.78% (p=0.000 n=10) 1.393m ± 1% -7.76% (p=0.000 n=10)
VerifyPKCS1v15/2048-4 50.87µ ± 0% 266.41µ ± 1% +423.71% (p=0.000 n=10) 174.38µ ± 0% +242.79% (p=0.000 n=10) 38.28µ ± 2% -24.75% (p=0.000 n=10)
SignPSS/2048-4 1.513m ± 1% 1.709m ± 0% +12.97% (p=0.000 n=10) 1.461m ± 0% -3.42% (p=0.000 n=10) 1.413m ± 0% -6.58% (p=0.000 n=10)
VerifyPSS/2048-4 53.45µ ± 1% 268.56µ ± 0% +402.48% (p=0.000 n=10) 177.29µ ± 0% +231.72% (p=0.000 n=10) 43.08µ ± 5% -19.39% (p=0.000 n=10)
geomean 514.6µ 1.094m +112.65% 801.6µ +55.77% 442.1µ -14.08%
Fixes #63516
Change-Id: If40e596a2e4b3ab7a202ff34591cf9cffecfcc1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/552935
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Now, this is embarrassing. For the whole Go 1.20 and Go 1.21 cycles, we
based RSA public key operation (verification and decryption) benchmarks
on the keys in rsa_test.go, which had E = 3. Most keys in use, including
all those generated by GenerateKey, have E = 65537. This significantly
skewed even relative benchmarks, because the new constant-time
algorithms would incur a larger slowdown for larger exponents.
I noticed this only because I got a production profile for an
application that does a lot of RSA verifications, saw ExpShort show up,
made ExpShort faster, and the crypto/rsa profiles didn't move.
We were measuring the wrong thing, and the slowdown was worse than we
thought. My apologies.
(If E had not been parametrized, it would have avoided issues like this
one, too. Grumble. https://words.filippo.io/parameters/#fn9)
goos: darwin
goarch: arm64
pkg: crypto/rsa
│ g35222eeb78 │ new │
│ sec/op │ sec/op vs base │
DecryptPKCS1v15/2048-8 1.414m ± 2% 1.417m ± 1% ~ (p=0.971 n=10)
DecryptPKCS1v15/3072-8 4.107m ± 0% 4.160m ± 1% +1.29% (p=0.000 n=10)
DecryptPKCS1v15/4096-8 9.363m ± 1% 9.305m ± 1% ~ (p=0.143 n=10)
EncryptPKCS1v15/2048-8 162.8µ ± 2% 212.1µ ± 0% +30.34% (p=0.000 n=10)
DecryptOAEP/2048-8 1.460m ± 4% 1.413m ± 1% ~ (p=0.105 n=10)
EncryptOAEP/2048-8 161.7µ ± 0% 213.4µ ± 0% +31.99% (p=0.000 n=10)
SignPKCS1v15/2048-8 1.419m ± 1% 1.476m ± 1% +4.05% (p=0.000 n=10)
VerifyPKCS1v15/2048-8 160.6µ ± 0% 212.6µ ± 3% +32.38% (p=0.000 n=10)
SignPSS/2048-8 1.419m ± 0% 1.477m ± 2% +4.07% (p=0.000 n=10)
VerifyPSS/2048-8 163.9µ ± 8% 212.3µ ± 0% +29.50% (p=0.000 n=10)
geomean 802.5µ 899.1µ +12.04%
Updates #63516
Change-Id: Iab4a0684d8101ae07dac8462908d8058fe5e9f3d
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CL 555355 has a bug in it - the GC program flag was also used to decide
when to free the unrolled bitmap. After that CL, we just don't free any
unrolled bitmaps, leading to a memory leak.
Use a separate flag to track types that need to be freed when their
corresponding object is freed.
Change-Id: I841b65492561f5b5e1853875fbd8e8a872205a84
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Accurate position information for embedded types in interfaces is
crucial to identify the corresponding source file, and with that
the Go language version associated with that file. (The position
information is also important for proper error messages.)
Before this CL, the position information for embedded types was
discarded after type set computation, in the assumption that it
was not needed anymore. However, substitutions that update the
interface may lead to repeated type set computations which then
won't have the correct position information.
This CL does preserve the position information for embedded
types until the end of type checking (cleanup phase), and also
copy the position information during a substitution of the
interface.
The respective bug (#64759) doesn't seem to appear in 1.22 (most
likely because it's hidden by some of the changes made with respect
to the file version logic), but the existing code is still wrong.
The backport of this code to 1.21 and 1.20 fixes the issue in those
releases.
For #64759.
Change-Id: I80f4004c9d79cb02eac6739c324c477706615102
Reviewed-on: https://go-review.googlesource.com/c/go/+/555296
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Fixes #64972
Change-Id: I784a8728afbdef9736681d56f0a79c82a00609d6
GitHub-Last-Rev: bf158dbeaaa495dc258c590c7a21cf9e25e76ee7
GitHub-Pull-Request: golang/go#64991
Reviewed-on: https://go-review.googlesource.com/c/go/+/554455
Reviewed-by: Achille Roussel <achille.roussel@gmail.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
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It doesn't have a GC program - the whole point is that it is
the unrolled version of a GC program.
Fortunately, this isn't a bug as (*mspan).typePointersOfUnchecked
ignores the GCProg flag and just uses GCData as a bitmap unconditionally.
Change-Id: I2508af85af4a1806946e54c893120c5cc0cc3da3
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Per https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html:
“If, when attempting to write a file, the destination directory is
non-existent an attempt should be made to create it with permission
0700. […] The application should be prepared to handle the case where
the file could not be written […]. In such case it may choose to
present an error message to the user.”
In certain CI environments, these directories have well-defined
locations but do not exist and cannot be created. In that case,
we now choose to log and return from the test without failing it.
To prevent the functions from falling back to being entirely untested,
we still fail the test (and “present an error message to the user”) if
either function returns an empty string without an error, or returns a
path that refers to a non-directory or results in an error other than
ErrNotExist.
In addition, since the tests themselves no longer create subdirectories,
we add examples illustrating the suggested pattern of usage.
Fixes #64990.
Change-Id: Ie72106424f5ebe36eaf9288c22710d74bb14a462
Reviewed-on: https://go-review.googlesource.com/c/go/+/554815
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Shape-based stenciling in the Go compiler's generic instantiation
phase looks up shape types using the underlying type of a given target
type. This has a beneficial effect in most cases (e.g. we can use the
same shape type for two different named types whose underlying type is
"int"), but causes some problems when the underlying type is a very
large structure. The link string for the underlying type of a large
imported struct can be extremely long, since the link string
essentially enumerates the full package path for every field type;
this can produce a "go.shape.struct { ... " symbol name that is
absurdly long.
This patch switches the compiler to use a hash of the underlying type
link string instead of the string itself, which should continue to
provide commoning but keep symbol name lengths reasonable for shape
types based on large imported structs.
Fixes #65030.
Change-Id: I87d602626c43172beb99c186b8ef72327b8227a2
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Change-Id: Ib7c4baf0247c421954aedabfbb6a6af8a08a8936
Reviewed-on: https://go-review.googlesource.com/c/go/+/540021
Reviewed-by: Damien Neil <dneil@google.com>
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CL 549536 intended to decouple the internal implementation of rwmutex
from the semantic meaning of an rwmutex read/write lock in the static
lock ranking.
Unfortunately, it was not thought through well enough. The internals
were represented with the rwmutexR and rwmutexW lock ranks. The idea was
that the internal lock ranks need not model the higher-level ordering,
since those have separate rankings. That is incorrect; rwmutexW is held
for the duration of a write lock, so it must be ranked before any lock
taken while any write lock is held, which is precisely what we were
trying to avoid.
This is visible in violations like:
0 : execW 11 0x0
1 : rwmutexW 51 0x111d9c8
2 : fin 30 0x111d3a0
fatal error: lock ordering problem
execW < fin is modeled, but rwmutexW < fin is missing.
Fix this by eliminating the rwmutexR/W lock ranks shared across
different types of rwmutex. Instead require users to define an
additional "internal" lock rank to represent the implementation details
of rwmutex.rLock. We can avoid an additional "internal" lock rank for
rwmutex.wLock because the existing writeRank has the same semantics for
semantic and internal locking. i.e., writeRank is held for the duration
of a write lock, which is exactly how rwmutex.wLock is used, so we can
use writeRank directly on wLock.
For #64722.
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Fixes #64575
Change-Id: I0eaec642a9dc8ae3b273a6d41131cc7cb8332947
GitHub-Last-Rev: 17aa5170cbfe42cb86d56f1804266850d33c3eb5
GitHub-Pull-Request: golang/go#64578
Reviewed-on: https://go-review.googlesource.com/c/go/+/547855
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Compute median as a + (b-a)/2 instead of (a + b)/2.
Add additional test cases.
Fixes #65025.
Change-Id: Ib716a1036c17f8f33f51e33cedab13512eb7e0be
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Also make the reference into a doc link.
Change-Id: Ib112307a65b65c8f963abf60aa92cb1942de940c
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Currently go test -msan runtime always fails on loong64, arm64
and amd64. Changed the variable name to sz to match the
function prototypes.
For #64256
Change-Id: Ida71197307016520deb39293927850d47845140a
GitHub-Last-Rev: 0ee1e3bb093e682ef325d9860a8fed67570ca345
GitHub-Pull-Request: golang/go#64572
Reviewed-on: https://go-review.googlesource.com/c/go/+/547696
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