EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000051

[Dhciolfi]

Hi,

I have a Flutter app in production where I am using this plugin to encrypt some data.

However, I have started seeing the following exception on my crashlytics:

Crashed: Thread 0 Runner 0x6ebf0 runtime.sigtramp.abi0 + 4370033648 1 Runner 0x6ebe0 runtime.sigtramp.abi0 + 4370033632 2 libsystem_platform.dylib 0x1a90 _sigtramp + 56 3 fast_rsa 0x5a14c runtime.funcMaxSPDelta + 236 4 fast_rsa 0x5a14c runtime.funcMaxSPDelta + 236 5 fast_rsa 0x3ca58 runtime.init.5 + 40 6 fast_rsa 0x4bc48 runtime.doInit1 + 216 7 fast_rsa 0x3dd50 runtime.main + 288 8 fast_rsa 0x6db84 runtime.goexit.abi0 + 4

(I attached the entire stacktrace)
Stacktrace.txt

It happened with more than 3,000 users, on iOS 15, 16 and 17. It seems that the crash is happening during app startup.

Has someone had this issue before?

Best regards,
Ciolfi

[Arley011]

I also faced this issue. This happens randomly. It seems like some plugin initialization fails on startup because this sometimes happens even when running a debug app during app launching process.
Also, this happens only for iOS (and iPadOS).
I reported it here - #65 (comment)

[jerson]

Hi, which version are you using?, have this happened with other versions?

[Arley011]

I am using 3.6.1. Previously I've been using 3.5.1, but I don't know whether there was such issue. I updated more than year ago and Firebase don't have such old reports. But currently Firebase says that there are 5-6K early crashes (during app start) every week because of this issue.

[jerson]

I have created a new PR,

#72

take a look please and if you can try to reproduce the issue, would be useful to make sure this time is fine

[jerson]

We have just released a new version: https://pub.dev/packages/fast_rsa/versions/3.8.0, which includes two adjustments that may help with this issue:

• Added a pragma to methods used by Isolate to keep them alive in release mode.
• Introduced RSASync methods, which do not rely on Isolate and interact directly with the Bridge.

I suggest trying the new version, and if the issue persists, you can replace RSA with the new RSASync methods.