Crash in Big Sur (com.apple.NSURLSession) (11.0 Beta (20A4300b))

Question

raulylp OP

Created Aug ’20

Replies 6

Boosts 0

Views 1.9k

Participants 3

We are having a crash in an application that worked just fine in Catalina, as soon as we log in.

Please check

the attached crash log

We already raised a feedback (Nº 7979873) but as we did not have any response and we are looking for any kind of workaround since we need to release a beta for this application soon.

This crash is still reproducible using Big Sur beta 4 (20A5343i)

In addition, we have observed that the problem looks to be with the line:

Code Block completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, *nil*);

This completionHandler comes from

Code Block (NSURLSessionDelegate)
- (void)URLSession:(NSURLSession *)session
							task:(NSURLSessionTask *)task
didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
 completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler

Could it be that in MAC OS 11, NSURLSession changed and is causing this crash?
Is a different way/workaround to handle this issue?

Thank you in advance.

Boost

Answer 1

TyngJJ OP

Aug ’20

The report is pretty clear about thread 19, and frame 13

Code Block com.avaya.Avaya-Equinox			 	0x000000010d26a64a 0x10ce40000 + 4367946

is unsymbolicated. That should indicate which part of the app is causing the issue

0

Answer 2

DTS Engineer OP

Apple

Aug ’20

The crash report you posted shows that you’re using a third-party crash reporter. I recommend that you remove that before trying to debug a gnarly problem like this.

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

0

Answer 3

raulylp OP

Aug ’20

Hi eskimo, we've disabled crash reporter tool but we are still reproduce the crash. Below I've attached the logs running the application from xcode.

crash file without third-party crash reporter

0

Answer 4

DTS Engineer OP

Apple

Aug ’20

Accepted Answer

Indeed, but now I can look at your crash report with some confidence that it’s not telling me lies (-:

Is this crash easily reproducible? If so, I’d like to you run an experiment. For each session task you create, try setting the taskDescription property to some non-nil value (a constant string would be fine). Does that help?

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

0

Answer 5

raulylp OP

Aug ’20

Thank you so much eskimo!
This change resolved the crash.

0

Answer 6

DTS Engineer OP

Apple

Aug ’20

This change resolved the crash.

Cool, but that’s still a horrible bug on our part. I’ve updated your bug report with my analysis.

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

0