[release/9.0-staging] [android] Fix crash in method_to_ir #109510
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There exists a possibility where the klass being passed to try_prepare_objaddr_callvirt_optimization is not legit. This can result in unpredictable crashes. To fix, we pass the MonoType and flush out the MonoClass by calling mono_class_from_mono_type_internal. Fixes #109111
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Tagging subscribers to this area: @lambdageek, @steveisok |
This was referenced Nov 4, 2024
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lambdageek
approved these changes
Nov 5, 2024
jeffschwMSFT
approved these changes
Nov 5, 2024
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/ba-g Known infra related errors |
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Backport of #109381 to release/9.0-staging
/cc @steveisok
Customer Impact
A customer was experiencing intermittent crashes with their android app around
mono_method_to_ir. After testing multiple iterations, we found there were times when calls totry_prepare_objaddr_callvirt_optimizationcontained a null reference to a MonoClass. As a result, the app would crash.To fix, we made a call to
mono_class_from_mono_type_internalto make sure we would get a legit MonoClass.Regression
[If yes, specify when the regression was introduced. Provide the PR or commit if known.]
Testing
Manual before and after. After app did not crash.
Risk
Low
IMPORTANT: If this backport is for a servicing release, please verify that:
The PR target branch is
release/X.0-staging, notrelease/X.0.If the change touches code that ships in a NuGet package, you have added the necessary package authoring and gotten it explicitly reviewed.