[NSObject allocWithZone:]: attempt to allocate object of class 'UITraitCollection' failed when setting image in CarPlay

[markst]

We're encountering a crash when using Kingfisher to set an image on a CPListItem in CarPlay. The crash throws an NSMallocException with the message:

[NSObject allocWithZone:]: attempt to allocate object of class 'UITraitCollection' failed

This occurs when calling setImage on the CPListItem.

Stack Trace:

Fatal Exception: NSMallocException
0  CoreFoundation                 __exceptionPreprocess
1  libobjc.A.dylib                objc_exception_throw
2  CoreFoundation                 +[NSObject(NSObject) doesNotRecognizeSelector:]
3  UIKitCore                      __66-[UITraitCollection _traitCollectionByModifyingTraitsCopyOnWrite:]_block_invoke_2
4  UIKitCore                      __96-[UITraitCollection _traitCollectionByPopulatingUnspecifiedTraitsWithValuesFromTraitCollection:]_block_invoke_2
5  UIKitCore                      _UITraitTokenSetEnumerate
6  UIKitCore                      __96-[UITraitCollection _traitCollectionByPopulatingUnspecifiedTraitsWithValuesFromTraitCollection:]_block_invoke
7  UIKitCore                      -[UITraitCollection _traitCollectionByModifyingTraitsCopyOnWrite:]
8  UIKitCore                      -[UIImageConfiguration _applyConfigurationValuesTo:]
9  UIKitCore                      -[UIImageConfiguration configurationByApplyingConfiguration:]
10 UIKitCore                      +[UIImageConfiguration _completeConfiguration:fromConfiguration:]
11 UIKitCore                      -[UIImageAsset _withLock_imageWithConfiguration:]
12 UIKitCore                      -[UIImageAsset imageWithConfiguration:]
13 UIKitCore                      -[UIImageAsset imageWithTraitCollection:]
14 CarPlay                        -[CPImageSet initWithImage:treatmentBlock:]
15 CarPlay                        -[CPListItem setImage:]
16 Listen                         closure #1 in KingfisherWrapper.setImage(with:imageAccessor:taskAccessor:placeholder:parsedOptions:progressBlock:completionHandler:) (HasImageComponent+Kingfisher.swift:454)

Steps to Reproduce:

1. Use Kingfisher to load an image from a URL.
2. Set the image on a CPListItem using Kingfisher's setImage method.
3. The crash occurs during the setImage call.

Code Snippet:

let listItem = CPListItem(text: "Example", detailText: "Details")
listItem.kf.setImage(with: imageURL, placeholder: placeholderImage)

Environment:

• Kingfisher Version: 8.1.3
• iOS Versions Affected: All (88% on iOS 18)
• CarPlay: Yes
• Devices Affected: All

[markst]

Happy to provide more details.

I'm going to try decoding the image on background thread:

item.kf.setImage(
    with: thumbnail,
    options: [.backgroundDecode]
)

[markst]

On most occasions, the termination reasons are "exhausted real (wall clock) time allowance of 10.00 seconds" and "Failed to terminate gracefully after 5.0s," indicating the app is being terminated by the watchdog. I've added .backgroundDecode to offload decoding to a background thread to help prevent termination. We'll do further testing to evaluate the impact

[onevcat]

@markst I myself do not have a test environment for CarPlay now. May I know on which thread this crash happens? Is it thread 0 (the main thread)?

[markst]

Yes. I believe the watchdog terminator only happens ok the main thread? or at least this aggressive

…

On Sat, 22 Feb 2025 at 8:17 PM, Wei Wang ***@***.***> wrote: @markst <https://github.com/markst> I myself do not have a test environment for CarPlay now. May I know on which thread this crash happens? Is it thread 0 (the main thread)? — Reply to this email directly, view it on GitHub <#2364 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACC7DRXQZIO6ZPTDDNLWST2REVUZAVCNFSM6AAAAABXVJOYZWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNZWGUYTIOJXGA> . You are receiving this because you were mentioned.Message ID: ***@***.***> [image: onevcat]*onevcat* left a comment (onevcat/Kingfisher#2364) <#2364 (comment)> @markst <https://github.com/markst> I myself do not have a test environment for CarPlay now. May I know on which thread this crash happens? Is it thread 0 (the main thread)? — Reply to this email directly, view it on GitHub <#2364 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACC7DRXQZIO6ZPTDDNLWST2REVUZAVCNFSM6AAAAABXVJOYZWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNZWGUYTIOJXGA> . You are receiving this because you were mentioned.Message ID: ***@***.***>