react-native-reanimated: iOS: Full app crash

Description

I’m receiving the following error on iOS:

com.facebook.react.JavaScript (17): EXC_BAD_ACCESS (code=EXC_I386_GPFLT)

I’ve implemented a stories screen using react-native-navigation, and see this error when I quickly close the story (= unmount the screen) while (or shortly before) I run an animation with reanimated. In this case it’s a withTiming worklet.

This is my call stack at the time of the crash:

Screenshots

Steps To Reproduce

Create app using react-native-navigation and reanimated
Open and close stories like a maniac
At some point, close the story (and therefore unmount the screen) exactly when a worklet is being started, not sure it it’s caused by a timing function, or the timing function having a callback and then unmounting the Reanimated View.

Expected behavior

I expect the story to close and any reanimated worklets/animations/state to be disposed

Actual behavior

The app crashes with the error com.facebook.react.JavaScript (17): EXC_BAD_ACCESS (code=EXC_I386_GPFLT)

Screenshot 2020-09-26 at 18 44 27

Snack or minimal code example

Working on this. Have to strip out a lot of things, not sure if I can easily replicate it using a simple example…

Package versions

React: 16.13.1
React Native: 0.63.2
React Native Reanimated: 2.0.0-alpha7
React Native Navigation: 7.0.0-snapshot2020

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 27 (11 by maintainers)

Commits related to this issue

fix StoreUser (#1315) I believe the problems mentioned in https://github.com/software-mansion/react-native-reanimated/issues/1284 are caused by parallel read/writes operations made on hash map. We ca... — committed to software-mansion/react-native-reanimated by deleted user 4 years ago
Fix freeze problem (#1346) ## WHY Currently, there are some cases when Reanimated freezes. It caused by a deadlock that occurs during synchronous layout. I've discovered that during props update o... — committed to software-mansion/react-native-reanimated by deleted user 4 years ago

Most upvoted comments

Same as @kanelloc ,

xcode 13 RN 0.66 Reanimated 2.3.0-beta.2

+12

592da on Oct 3, 2021

We are almost sure what is causing the problem. We are working on it and should be solved soon.

+10

Szymon20000 on Oct 13, 2020

@kanelloc @592da - same thing here - app freezing on a specific (but not all) call to goBack() animation - did you figure out any fix here?

princefishthrower on Oct 25, 2021

I’m also getting an iOS app freeze when regular animations run alongside reanimations. Specifically, the main thread is stuck waiting for a semaphore on line 227 of REANodesManager.m, in the performOperations method:

dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);

ajpaulingalls on Oct 3, 2020

With ^2.0.0-alpha.8, it works great on my app which had this issue on beta ^2.0.0-alpha.7. Thanks for your awesome work ! 🎉

Alexandredc on Oct 30, 2020

If I replace in the file REANodesManager.m line 228 : dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);

By : dispatch_semaphore_signal(semaphore);

It is working !

Is it bad ? Will it hurts my iPhone memory ? Can it break react-native-reanimated ? What do you think about it @Szymon20000 @jpudysz @mrousavy ?

Thanks for the reply, I hope we will find a solution…

JB-CHAUVIN on Oct 12, 2020

I have the same issue with a header, animated while scrolling But the same animation was working 2 days ago, before react-native upgrade (0.63.0 -> 0.63.2)

Ghya on Sep 28, 2020