CFNetwork crash when CFArrayGetCount

Question

Created Nov ’22

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**I have encountered a crash with a relatively high frequency, which mainly occurs in the Macos 13 and 12.x system. I can hardly search for other useful information. I hope to get your help

blew is the crash report. **

Crashed Thread: 3 com.apple.NSURLConnectionLoader

Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000 Exception Codes: 0x0000000000000001, 0x0000000000000000 Exception Note: EXC_CORPSE_NOTIFY

VM Region Info: 0 is not in any region. Bytes before following region: 4367548416 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL UNUSED SPACE AT START --->
__TEXT 104538000-1055e8000 [ 16.7M] r-x/r-x SM=COW ...s/MacOS/WORKS

Thread 3 Crashed:: com.apple.NSURLConnectionLoader 0 CoreFoundation 0x1ab5966ac CFArrayGetCount + 16 1 CoreFoundation 0x1ab5cfab0 _CFStreamClose + 264 2 CFNetwork 0x1b03928f4 0x1b0177000 + 2210036 3 libdispatch.dylib 0x1ab36a1c8 _dispatch_client_callout + 20 4 libdispatch.dylib 0x1ab36dc64 _dispatch_block_invoke_direct + 264 5 CFNetwork 0x1b01b7180 0x1b0177000 + 262528 6 CoreFoundation 0x1ab5baff8 CFArrayApplyFunction + 84 7 CFNetwork 0x1b01b7070 0x1b0177000 + 262256 8 CFNetwork 0x1b01b6f18 0x1b0177000 + 261912 9 CoreFoundation 0x1ab5fa9a0 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 28 10 CoreFoundation 0x1ab5fa8ec __CFRunLoopDoSource0 + 208 11 CoreFoundation 0x1ab5fa5ec __CFRunLoopDoSources0 + 268 12 CoreFoundation 0x1ab5f8f6c __CFRunLoopRun + 828 13 CoreFoundation 0x1ab5f8490 CFRunLoopRunSpecific + 600 14 CFNetwork 0x1b03e194c 0x1b0177000 + 2533708 15 Foundation 0x1ac4cd71c NSThread__start + 808 16 libsystem_pthread.dylib 0x1ab52e26c _pthread_start + 148 17 libsystem_pthread.dylib 0x1ab52908c thread_start + 8

   0x1b0177000 -        0x1b062afff com.apple.CFNetwork (1331.0.7) <cfdb5ccd-a5e9-3e08-ad4f-087f420db6a0> /System/Library/Frameworks/CFNetwork.framework/Versions/A/CFNetwork

Answered by markyin in 734853022

follow is the full crash log.

Full Report Below

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Answer 1

markyin OP

Nov ’22

Accepted Answer

follow is the full crash log.

Full Report Below

1

Answer 2

DTS Engineer OP

Apple

Nov ’22

Looking at your crash report there’s some evidence that this is related to an NSURLSession task that has a streamed body, for example, a task created with -uploadTaskWithStreamedRequest:. Do you do that in your app?

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

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Answer 3

markyin OP

Nov ’22

@eskimo

thanks for your answer.

we didn't find used a place with -uploadTaskWithStreamedRequest:, but we found a third library that used a httpBodyStream from URLRequest.

so is it the error when third library close the stream?

0

Answer 4

DTS Engineer OP

Apple

Nov ’22

so is it the error when third library close the stream?

I don’t know. All the info I have is from that crash report, and there’s evidence in that report that streams are involved. Specifically, in the report I see this:

Thread 3 Crashed:: com.apple.NSURLConnectionLoader
0   CoreFoundation    … CFArrayGetCount + 16
1   CoreFoundation    … _CFStreamClose + 264
2   CFNetwork         … 0x1a1f33000 + 2213464
3   libdispatch.dylib … _dispatch_client_callout + 20

indicating that CFNetwork has called _CFStreamClose (frames 3 and 2), and the only reason I can think of for CFNetwork to be messing with streams is because of a body stream.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0