firebase
GDTStorage background task running for more than 30s, causing app to be terminated by the system
Description
When running our app with SDK 11.15.0 we are seeing repeated instances of this message in the Xcode console log:
Background Task 4,617 ("GDTStorage"), was created over 30 seconds ago.
In applications running in the background, this creates a risk of termination.
Remember to call UIApplication.endBackgroundTask(_:) for your task in a timely manner to avoid this.
This causes our app to frequently be terminated by the system, which appears to the user like a crash.
We are only using FirebaseCrashlytics, FirebasePerformance and FirebaseDynamicLinks. The only SDK calls we make are FirebaseApp.configure() and the following Crashlytics calls:
Crashlytics.crashlytics().setCrashlyticsCollectionEnabled(true)
Crashlytics.crashlytics().setCustomValue(_:, forKey:)
Crashlytics.crashlytics().setUserID(_:)
This background task seems to be being created here: https://github.com/google/GoogleDataTransport/blob/398227941b1b83179d3241f72842e2b1e23663f4/GoogleDataTransport/GDTCORLibrary/GDTCORFlatFileStorage.m#L130
There is an issue in that repo related to this, which has so far been ignored.
Reproducing the issue
We just run the app and it happens after about 30 seconds, whilst the app is still running. When the app is put into background, the messages continue.
Firebase SDK Version
11.15.0 and 12.0.0
Xcode Version
16.4
Installation Method
Swift Package Manager
Firebase Product(s)
Crashlytics, Performance, DynamicLinks
Targeted Platforms
iOS
Relevant Log Output
If using Swift Package Manager, the project's Package.resolved
I've only added the firebase and google repos, not the entire Package.resolved
Expand Package.resolved snippet
{
"identity" : "firebase-ios-sdk",
"kind" : "remoteSourceControl",
"location" : "https://github.com/firebase/firebase-ios-sdk.git",
"state" : {
"revision" : "fdc352fabaf5916e7faa1f96ad02b1957e93e5a5",
"version" : "11.15.0"
}
},
{
"identity" : "leveldb",
"kind" : "remoteSourceControl",
"location" : "https://github.com/firebase/leveldb.git",
"state" : {
"revision" : "a0bc79961d7be727d258d33d5a6b2f1023270ba1",
"version" : "1.22.5"
}
},
{
"identity" : "nanopb",
"kind" : "remoteSourceControl",
"location" : "https://github.com/firebase/nanopb.git",
"state" : {
"revision" : "b7e1104502eca3a213b46303391ca4d3bc8ddec1",
"version" : "2.30910.0"
}
},
{
"identity" : "google-ads-on-device-conversion-ios-sdk",
"kind" : "remoteSourceControl",
"location" : "https://github.com/googleads/google-ads-on-device-conversion-ios-sdk",
"state" : {
"revision" : "428d8bb138e00f9a3f4f61cc6cd8863607524f65",
"version" : "2.1.0"
}
},
{
"identity" : "googleappmeasurement",
"kind" : "remoteSourceControl",
"location" : "https://github.com/google/GoogleAppMeasurement.git",
"state" : {
"revision" : "45ce435e9406d3c674dd249a042b932bee006f60",
"version" : "11.15.0"
}
},
{
"identity" : "googledatatransport",
"kind" : "remoteSourceControl",
"location" : "https://github.com/google/GoogleDataTransport.git",
"state" : {
"revision" : "617af071af9aa1d6a091d59a202910ac482128f9",
"version" : "10.1.0"
}
},
{
"identity" : "googleutilities",
"kind" : "remoteSourceControl",
"location" : "https://github.com/google/GoogleUtilities.git",
"state" : {
"revision" : "60da361632d0de02786f709bdc0c4df340f7613e",
"version" : "8.1.0"
}
},
{
"identity" : "grpc-binary",
"kind" : "remoteSourceControl",
"location" : "https://github.com/google/grpc-binary.git",
"state" : {
"revision" : "cc0001a0cf963aa40501d9c2b181e7fc9fd8ec71",
"version" : "1.69.0"
}
},
{
"identity" : "gtm-session-fetcher",
"kind" : "remoteSourceControl",
"location" : "https://github.com/google/gtm-session-fetcher.git",
"state" : {
"revision" : "3cdb78efb79b4a5383c3911488d8025bfc545b5e",
"version" : "4.3.0"
}
},
{
"identity" : "interop-ios-for-google-sdks",
"kind" : "remoteSourceControl",
"location" : "https://github.com/google/interop-ios-for-google-sdks.git",
"state" : {
"revision" : "040d087ac2267d2ddd4cca36c757d1c6a05fdbfe",
"version" : "101.0.0"
}
},
If using CocoaPods, the project's Podfile.lock
Expand Podfile.lock snippet
Replace this line with the contents of your Podfile.lock!
I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.
FYI I just tried with Firebase SDK version 12.0.0 (removing FirebaseDynamicLinks which is no longer supported) and the issue is still there.
Thanks for the report.
Are you able to reproduce in a quickstart or other shareable repro example? Is it simulator and/or device? What iOS version?
I will see if I can reproduce in a quickstart. It happens on simulator and device. iOS 18.5.
I think this is also related to the crashes we start seeing on our app after upgrading to 11.15.0. Here is the stack track from our crash
Crashlytics - Stack trace
Application: com.driivz.mobile.EVgo
Platform: apple
Date: Wed Jul 23 2025 06:08:30 GMT-0400 (Eastern Daylight Time)
Crashed: com.apple.main-thread
0 CoreFoundation 0x3bd3c _CFXNotificationRegistrarAddObserver + 364
1 CoreFoundation 0x27a04 CFXNotificationRegistrarAdd + 568
2 CoreFoundation 0x271c8 _CFXNotificationRegisterObserver + 252
3 EVgoCharger 0x918c44 __41-[FPRTraceBackgroundActivityTracker init]_block_invoke + 44 (FPRTraceBackgroundActivityTracker.m:44)
4 libdispatch.dylib 0x1aac _dispatch_call_block_and_release + 32
5 libdispatch.dylib 0x1b584 _dispatch_client_callout + 16
6 libdispatch.dylib 0x385a0 _dispatch_main_queue_drain.cold.5 + 812
7 libdispatch.dylib 0x10d30 _dispatch_main_queue_drain + 180
8 libdispatch.dylib 0x10c6c _dispatch_main_queue_callback_4CF + 44
9 CoreFoundation 0x6cd90 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16
10 CoreFoundation 0x104f4 __CFRunLoopRun + 1980
11 CoreFoundation 0x11c3c CFRunLoopRunSpecific + 572
12 GraphicsServices 0x1454 GSEventRunModal + 168
13 UIKitCore 0x135274 -[UIApplication _run] + 816
14 UIKitCore 0x100a28 UIApplicationMain + 336
15 EVgoCharger 0x80e0 main + 6 (main.swift:6)
16 ??? 0x1b1507f08 (Missing)
