When user opened my application, it crashed immediately. [Firebase crash report CFNetwork]

First off a clarification on this point:

This is crash log message from firebase.

com.apple.CFNetwork.Connection EXC_BAD_ACCESS KERN_INVALID_ADDRESS

The for crash you attached are showing a very different crash pattern than that and, in fact, I don't believe firebase would have even been capable of detecting or capturing them, as they happened before any externel code was loaded into your apps process. I don't know what Firebase is capturing, but it isn't the crashes below.

Here are .ips crash log that I changed to .txt.

The short summary is that all of these crashes are happening very early in the app launch process, well before any "app" activity has actually occurred. In theory is POSSIBLE that your app could have some involvement, however, given then:

• All crashes occurred on a single device during a single boot cycle.

• The problem did not reoccur after device reboot.

• The current system run had been active to a relatively "long" time (note that the highest crash PID is 99862).

...then I believe this is a system level issue that's outside your apps control.

Do you have any idea to fix this?

As I said above, I think this is actually a system level issue and, in all likelihood, may not have actually been tied to "your" app at all (other apps would have crashed as well, the user just happened to be testing your app).

Further investigation might be worthwhile if some other factor changes the situation:

• The problem is actually happening "frequently", either to a large number of users or "very often" for this particular user.

• Your able to find a way to reliable reproduce the issue.

• Something else changes that in some way directly implicates your app and/or "hints" at some underlying cause.

Otherwise, I don't think I'd spend any more time looking at this.

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Kevin Elliott
DTS Engineer, CoreOS/Hardware