Crash in [FPRMemoryGaugeCollector collectMetric] when executing a network call

[ouachman]

Description

Hello
I am using Firebase 12.3.0. My app update just went into production with Performance Monitoring and I received 2 crashes so far. This is a very small amount of crashes given the total number of network calls made, but still I though I would share the stack trace.

EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x000000012f9e413c

0 libsystem_malloc.dylib 0xf8c0 _xzm_do_lock_action + 28
1 libsystem_malloc.dylib 0xfae4 xzm_statistics_self + 92
2 libsystem_malloc.dylib 0xfbdc malloc_zone_statistics + 192
3 libsystem_malloc.dylib 0x2dff4 mstats + 44
4 FirebasePerformance 0xe174 fprCollectMemoryMetric + 44
5 FirebasePerformance 0xe578 -[FPRMemoryGaugeCollector collectMetric] + 24
6 FirebasePerformance 0xc3e4 -[FPRGaugeManager collectAllGauges] + 108
7 FirebasePerformance 0x1a03c -[FPRSessionManager collectAllGaugesOnce] + 28
8 FirebasePerformance 0x10818 -[FPRNetworkTrace start] + 92
9 FirebasePerformance 0x15f8c __InstrumentDataTaskWithRequestCompletionHandler_block_invoke + 332
10 FirebasePerformance 0x15f18 __InstrumentDataTaskWithRequestCompletionHandler_block_invoke + 216

Let me know if anything is needed to investigate this further. Thank you.

Reproducing the issue

This is hard to reproduce, happening randomly in production.

Firebase SDK Version

12.3.0

Xcode Version

16.1, 26.1.1

Installation Method

CocoaPods

Firebase Product(s)

Crashlytics, Performance

Targeted Platforms

iOS

Relevant Log Output

If using Swift Package Manager, the project's Package.resolved

Expand Package.resolved snippet

Replace this line with the contents of your Package.resolved.

If using CocoaPods, the project's Podfile.lock

Expand Podfile.lock snippet

Replace this line with the contents of your Podfile.lock!

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[ouachman]

Here is another stack trace

Crashed: com.apple.NSURLSession-delegate
EXC_BREAKPOINT 0x000000021aa0d500

Crashed: com.apple.NSURLSession-delegate
0 libsystem_platform.dylib 0x4500 _os_unfair_lock_unowned_abort + 36
1 libsystem_platform.dylib 0x1c9c _os_unfair_lock_unlock_slow + 96
2 libsystem_malloc.dylib 0xe344 xzm_statistics_self + 92
3 libsystem_malloc.dylib 0xe260 malloc_zone_statistics + 200
4 libsystem_malloc.dylib 0x2b69c mstats + 44
5 FirebasePerformance 0xe174 fprCollectMemoryMetric + 44
6 FirebasePerformance 0xe578 -[FPRMemoryGaugeCollector collectMetric] + 24
7 FirebasePerformance 0xc3e4 -[FPRGaugeManager collectAllGauges] + 108
8 FirebasePerformance 0x1a03c -[FPRSessionManager collectAllGaugesOnce] + 28
9 FirebasePerformance 0x10c7c -[FPRNetworkTrace didCompleteRequestWithResponse:error:] + 196
10 FirebasePerformance 0x160a0 __InstrumentDataTaskWithRequestCompletionHandler_block_invoke_2 + 128
11 CFNetwork 0x3f8e4 __40-[__NSURLSessionLocal taskForClassInfo:]_block_invoke + 508
12 CFNetwork 0x3f6a0 __49-[__NSCFLocalSessionTask _task_onqueue_didFinish]_block_invoke_2 + 160
13 libdispatch.dylib 0x2248 _dispatch_call_block_and_release + 32
14 libdispatch.dylib 0x3fa8 _dispatch_client_callout + 20
15 libdispatch.dylib 0xb5cc _dispatch_lane_serial_drain + 768
16 libdispatch.dylib 0xc158 _dispatch_lane_invoke + 432
17 libdispatch.dylib 0x1738c _dispatch_root_queue_drain_deferred_wlh + 288
18 libdispatch.dylib 0x16bd8 _dispatch_workloop_worker_thread + 540
19 libsystem_pthread.dylib 0x3680 _pthread_wqthread + 288
20 libsystem_pthread.dylib 0x1474 start_wqthread + 8

[rizafran]

Thanks for the report, @ouachman. I suspect that this is related to #14734.

[JesusRojass]

I will take a look into this one!

thanks for the stack traces!