| Age | Commit message (Collapse) | Author |
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[Bug #20915] Fix SEGV with `TracePoint#parameters` and aliased C method
The following snippet results with a SEGV:
```ruby
C = Class.new do
alias_method :new_to_s, :to_s
end
TracePoint.new(:c_call, &:parameters).enable { C.new.new_to_s }
```
at MRI 3.3.6 and ruby 3.4.0dev
The root cause of the issue lies in the `rb_tracearg_parameters` function
within the `RUBY_EVENT_C_RETURN` branch. Specifically, when the invoked
method is an alias for a C function,
`rb_method_entry_without_refinements(..., trace_arg->called_id, ...)`
may return NULL. In that case we can fallback to `trace_arg->id`.
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04729fe68dceddab045be7324e26c2bb15aa62c7: [Backport #20286] [Backport #20286]
Ensure that exiting thread invokes end-of-life behaviour. (#10039)
Fix exception handling in `rb_fiber_scheduler_set`. (#10042)
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Memory leak with TracePoint on bmethod
[Bug #20194]
When disabling the TracePoint on bmethod, the hooks list is not freed.
For example:
obj = Object.new
obj.define_singleton_method(:foo) {}
bmethod = obj.method(:foo)
tp = TracePoint.new(:return) {}
10.times do
100_000.times do
tp.enable(target: bmethod) {}
end
puts `ps -o rss= -p #{$$}`
end
Before:
18208
22832
26528
29728
34000
37776
40864
44400
47680
51504
After:
16688
17168
17168
17248
17696
17760
17824
17824
17856
17920
---
test/ruby/test_settracefunc.rb | 13 +++++++++++++
vm_trace.c | 1 +
2 files changed, 14 insertions(+)
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Fix crash in TracePoint c_call for removed method
trace_arg->id is the ID of the original method of an aliased method. If
the original method is removed, then the lookup will fail. We should use
trace_arg->called_id instead, which is the ID of the aliased method.
Fixes [Bug #19305]
---
test/ruby/test_settracefunc.rb | 23 +++++++++++++++++++++++
vm_trace.c | 2 +-
2 files changed, 24 insertions(+), 1 deletion(-)
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This makes sure the method returns nil for these events, as
described in NEWS, even if the TracePoint could create a binding.
Notes:
Merged: https://github.com/ruby/ruby/pull/6984
Merged-By: jeremyevans <code@jeremyevans.net>
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[Feature #18774]
As well as `SizedQueue#pop(timeout: sec)`
If both `non_block=true` and `timeout:` are supplied, ArgumentError
is raised.
Notes:
Merged: https://github.com/ruby/ruby/pull/6185
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Previously, we didn't pop the frame that runs the TracePoint hook for
b_return events for blocks running as methods (bmethods). In case the
hook raises, that formed an infinite loop during stack unwinding in
hook_before_rewind().
[Bug #18060]
Notes:
Merged: https://github.com/ruby/ruby/pull/4638
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df317151a5b4e0c5a30fcc321a9dc6abad63f7ed removed the code to free
rb_hook_list_t, so repeated targeting of the same bmethod started
to leak the hook list. You can observe how the maximum memory use
scales with input size in the following script with `/usr/bin/time -v`.
```ruby
o = Object.new
o.define_singleton_method(:foo) {}
trace = TracePoint.new(:return) {}
bmethod = o.method(:foo)
ARGV.first.to_i.times { trace.enable(target:bmethod){} }
4.times {GC.start}
```
After this change the maximum doesn't grow as quickly.
To plug the leak, check whether the hook list is already allocated
when enabling the targeting TracePoint for the bmethod. This fix
also allows multiple TracePoints to target the same bmethod, similar
to other valid TracePoint targets.
Finally, free the rb_hook_list_t struct when freeing the method
definition it lives on. Freeing in the GC is a good way to avoid
lifetime problems similar to the one fixed in df31715.
[Bug #18031]
Notes:
Merged: https://github.com/ruby/ruby/pull/4651
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`vm_trace_hook()` runs global hooks before running local hooks.
Previously, we read the local hook list before running the global hooks
which led to use-after-free when a global hook frees the local hook
list. A global hook can do this by disabling a local TracePoint, for
example.
Delay local hook list loading until after running the global hooks.
Issue discovered by Jeremy Evans in GH-5862.
[Bug #18730]
Notes:
Merged: https://github.com/ruby/ruby/pull/5865
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Check whether the current or previous frame is a Ruby frame in
call_trace_func and rb_tracearg_binding before attempting to
create a binding for the frame.
Fixes [Bug #18487]
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
Notes:
Merged: https://github.com/ruby/ruby/pull/5767
Merged-By: jeremyevans <code@jeremyevans.net>
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This reverts commit 343ea9967e4a6b279eed6bd8e81ad0bdc747f254.
This causes an assertion failure with -DRUBY_DEBUG=1 -DRGENGC_CHECK_MODE=2
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This is more backwards compatible, and should fix issues with
power_assert.
Unfortunately, it requires using a sentinel value as the default
value of target_thread, instead of the more natural expression
used in the original approach.
Notes:
Merged: https://github.com/ruby/ruby/pull/5359
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If TracePoint#enable is passed a block, it previously started
the trace on all threads. This changes it to trace only the
current thread by default. To limit the scope of the change,
the current thread is only used by default if target and
target_line are both nil. You can pass target_thread: nil
to enable tracing on all threads, to get the previous
default behavior.
Fixes [Bug #16889]
Notes:
Merged: https://github.com/ruby/ruby/pull/5359
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Check whether the current or previous frame is a Ruby frame in
call_trace_func before attempting to create a binding for the frame.
Fixes [Bug #18487]
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
Notes:
Merged: https://github.com/ruby/ruby/pull/5567
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[Feature #17881]
Works similarly to `method_added` but for constants.
```ruby
Foo::BAR = 42 # call Foo.const_added(:FOO)
class Foo::Baz; end # call Foo.const_added(:Baz)
Foo.autoload(:Something, "path") # call Foo.const_added(:Something)
```
Notes:
Merged: https://github.com/ruby/ruby/pull/4521
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Notes:
Merged-By: k0kubun <takashikkbn@gmail.com>
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In general, while TracePoint callback is running,
other registerred callbacks are not called to avoid
confusion by reentrace.
This method allow the reentrace. This method should be
used carefully, otherwize the callback can be easily called
infinitely.
[Feature #15912]
Co-authored-by: Jean Boussier <jean.boussier@gmail.com>
Notes:
Merged: https://github.com/ruby/ruby/pull/5231
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The main impetus for this change is to fix [Bug #13392]. Previously, we
fired the "return" TracePoint event after popping the stack frame for
the block running as method (BMETHOD). This gave undesirable source
location outputs as the return event normally fires right before the
frame going away.
The iseq for each block can run both as a block and as a method. To
accommodate that, this commit makes vm_trace() fire call/return events for
instructions that have b_call/b_return events attached when the iseq is
running as a BMETHOD. The logic for rewriting to "trace_*" instruction
is tweaked so that when the user listens to call/return events,
instructions with b_call/b_return become trace variants.
To continue to provide the return value for non-local returns done using
the "return" or "break" keyword inside BMETHODs, the stack unwinding
code is tweaked. b_return events now provide the same return value as
return events for these non-local cases. A pre-existing test deemed not
providing a return value for these b_return events as a limitation.
This commit removes the checks for call/return TracePoint events that
happen when calling into BMETHODs when no TracePoints are active.
Technically, migrating just the return event is enough to fix the bug,
but migrating both call and return removes our reliance on
`VM_FRAME_FLAG_FINISH` and re-entering the interpreter when the caller
is already in the interpreter.
Notes:
Merged: https://github.com/ruby/ruby/pull/4637
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Notes:
Merged: https://github.com/ruby/ruby/pull/5102
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TracePoint leaks memory because it allocates a `rb_tp_t` struct
without ever freeing it (it is created with `RUBY_TYPED_NEVER_FREE`).
Notes:
Merged: https://github.com/ruby/ruby/pull/5008
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In vm_call_method_each_type, check for c_call and c_return events before
dispatching to vm_call_ivar and vm_call_attrset. With this approach, the
call cache will still dispatch directly to those functions, so this
change will only decrease performance for the first (uncached) call, and
even then, the performance decrease is very minimal.
This approach requires that we clear the call caches when tracing is
enabled or disabled. The approach currently switches all vm_call_ivar
and vm_call_attrset call caches to vm_call_general any time tracing is
enabled or disabled. So it could theoretically result in a slowdown for
code that constantly enables or disables tracing.
This approach does not handle targeted tracepoints, but from my testing,
c_call and c_return events are not supported for targeted tracepoints,
so that shouldn't matter.
This includes a benchmark showing the performance decrease is minimal
if detectable at all.
Fixes [Bug #16383]
Fixes [Bug #10470]
Co-authored-by: Takashi Kokubun <takashikkbn@gmail.com>
Notes:
Merged: https://github.com/ruby/ruby/pull/4767
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`TracePoint.stat` returns the "to be deleted" TP numbers, and
http://rubyci.s3.amazonaws.com/graviton2/ruby-master/log/20210810T030003Z.fail.html.gz
shows there is a "to be deleted" TP.
This patch uses only :line event and add some lines to allow MRI
deletes "to be deleted" TPs.
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Fixes [Bug #17868]
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With this patch, TracePoint receives a `:fiber_switch` event for
_almost_ every fiber switch. Previously, it would not be sent when an
exception was going to be raised. Now the event should only be blockable
by an interrupt (including `Thread#raise`) or a fatal error.
Additionally, interrupts will now be checked on the return fiber
_before_ re-raising the terminating unhandled exception. And a fiber
that terminates with an unhandled exception no longer creates a pending
interrupt on its thread. The exception will be raised in the return
fiber the same way as `Fiber#raise`: using `cont.value` with `cont.argc
== -1`
I moved `rb_exc_raise` from `fiber_store` to the end of `fiber_switch`
after _all_ of the other cleanup code: `fiber_stack_release`,
`th->blocking` increment, `RUBY_VM_CHECK_INTS`, and `EXEC_EVENT_HOOK`.
It seems to me that skipping those other cleanup steps may have also
resulted in other bugs.
Notes:
Merged-By: ioquatix <samuel@codeotaku.com>
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because the name "MJIT" is an internal code name, it's inconsistent with
--jit while they are related to each other, and I want to discourage future
JIT implementation-specific (e.g. MJIT-specific) APIs by this rename.
[Feature #17490]
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* Otherwise those tests, etc cannot run on alternative Ruby implementations.
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If two or more tracepoints enabled with the same target and with
different target lines, the only last line is activated.
This patch fixes this issue by remaining existing trace instructions.
[Bug #17302]
Notes:
Merged: https://github.com/ruby/ruby/pull/3770
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* Fix debug documents to match Thread#to_s change (Feature #16412 ticket)
* TracePoint#inspect returns "... file:line" (Feature #16513)
* Guard older version of Ruby in Tracepoint inspection tests
* Focus on current thread only when running TracePoint inspection test
Notes:
Merged-By: ko1 <ko1@atdot.net>
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* Rewrite Kernel#tap with Ruby
This was good for VM too, but of course my intention is to unblock JIT's inlining of a block over yield
(inlining invokeyield has not been committed though).
* Fix test_settracefunc
About the :tap deletions, the :tap events are actually traced (we already have a TracePoint test for builtin methods),
but it's filtered out by tp.path == "xyzzy" (it became "<internal:kernel>"). We could trace tp.path == "<internal:kernel>"
cases too, but the lineno is impacted by kernel.rb changes and I didn't want to make it fragile for kernel.rb lineno changes.
Notes:
Merged-By: k0kubun <takashikkbn@gmail.com>
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http://rubyci.s3.amazonaws.com/ubuntu2004/ruby-master/log/20200626T033003Z.log.html.gz
```
/home/chkbuild/chkbuild/tmp/build/20200626T033003Z/ruby/test/ruby/test_settracefunc.rb:2299: warning: ambiguous first argument; put parentheses or a space even after `/' operator
```
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If :return event is specified for a opt_invokebuiltin_delegate_leave
and leave combination, the instructions should be
opt_invokebuiltin_delegate
trace_return
instructions. To make it, opt_invokebuiltin_delegate_leave
instruction will be changed to opt_invokebuiltin_delegate even if
it is not an event target instruction.
Notes:
Merged-By: ko1 <ko1@atdot.net>
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to prevent a random failure like
http://ci.rvm.jp/results/trunk-random2@phosphorus-docker/3024287
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using opt_invokebuiltin_delegate_leave insn.
Since Ruby 2.7, :return of methods using builtin have not been traced properly.
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need to remove Constants.
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script_compiled event for TracePoint should not be invoked on
compile error (SyntaxError) because it is not "compiled".
[Bug #16459]
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[Bug #16399]
Notes:
Merged-By: XrXr
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Define TracePoint in trace_point.rb and use __builtin_ syntax.
Notes:
Merged: https://github.com/ruby/ruby/pull/2655
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Without this patch, "raise" event invoked twice when raise an
exception in "load"ed script.
This patch by danielwaterworth (Daniel Waterworth).
[Bug #15877]
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exec_hooks_postcheck() clean executed hook_list if it is needed.
list_exec is freed if there are no events and this list is local
event (connected to specific iseq). However, iseq keeps to point
this local hook_list, freed list. To prevent this situation,
do not free hook_list here even if it has no events.
This issue is reported by @joker1007.
https://twitter.com/joker1007/status/1153649170797830144
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67349 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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When copying `leave` insn, TRACE also should be copied if it is
present, but this optimization is trivial and not worth the
complexity. [ruby-core:91366] [Bug #15578]
4cae5353c03009beb1e0a1619422072773580609
5afd479de63b6609ddcd1510da94d2c1ac384f7f
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66977 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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