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OutputCaching middleware memory leak #61800

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narcis-ro opened this issue May 5, 2025 · 2 comments
Open
1 task done

OutputCaching middleware memory leak #61800

narcis-ro opened this issue May 5, 2025 · 2 comments
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area-middleware Includes: URL rewrite, redirect, response cache/compression, session, and other general middlewares feature-output-caching

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@narcis-ro
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Is there an existing issue for this?

  • I have searched the existing issues

Describe the bug

OutputCacheEntry is renting an ArrayPool that never gets returned to the pool, in method: CopyHeadersFrom

aspnetcore/src/Middleware/OutputCaching/src/OutputCacheEntry.cs

Line 105 in b7fcd33

Headers = new(arr, 0, index);

P.S the dispose is empty and is never released in any other place

Expected Behavior

ArrayPool rented should be returned

Steps To Reproduce

Normal usage of Output caching, behavior happens if there are headers to cache

Exceptions (if any)

No response

.NET Version

No response

Anything else?

No response
@ghost ghost added the area-middleware Includes: URL rewrite, redirect, response cache/compression, session, and other general middlewares label May 5, 2025
@narcis-ro
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Could also be related: #55890

@narcis-ro narcis-ro mentioned this issue May 5, 2025
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@BrennanConroy
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@mgravell

Could also be related: #55890

Don't know what that issue is about, but can't be related as the PinnedBlockMemoryPool and ArrayPool are completely different.

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@gfoidl @BrennanConroy @narcis-ro