Crash issue: No object with key 'xxx' in 'class_xxx'

[woohyuknrg]

How frequently does the bug occur?

Sometimes

Description

Our app crash 3 times in succession on the same device.
1st crash, call realm.refresh() throws: RLMException · No object with key '1310798' in 'class_PosModule'
2nd and 3rd crash: realm::KeyNotFound · No object with key '0' in 'class_Holiday'

Stacktrace & log output

freeDisk
17.3 GB

freeMemory
112.3 MB

jailbroken
false

locale
en_US

manufacturer
Apple

model
iPad 6 (iPad7,5)

modelNumber
J71bAP

orientation
landscapeleft

osName
iOS

osVersion
15.3.1

runtimeVersions
{
  "clangVersion": "13.1.6 (clang-1316.0.21.2.5)",
  "osBuild": "19D52"
}

thermalState
nominal

totalMemory
2.1 GB

wordSize
64

1st crash: RLMException · No object with key '1310798' in 'class_PosModule'
2	Realm	
RLMRealm.mm:965:9
-[RLMRealm refresh]

3	RealmSwift	
Realm.swift:903:25
Realm.refresh()

4	OurAppName	
DatabaseManager.swift:50:35
DatabaseManager.realm1()


2nd and 3rd crash: realm::KeyNotFound · No object with key '0' in 'class_Holiday'
0	unknown file	unknown method

Can you reproduce the bug?

Not yet

Reproduction Steps

No response

Version

10.30.0

What SDK flavour are you using?

Local Database only

Are you using encryption?

No, not using encryption

Platform OS and version(s)

iOS 15.3.1

Build environment

Xcode version: 13.4
Dependency manager and version: cocoapods-1.11.3

[ejm01]

@woohyuknrg Are you able to provide a full stack trace for any of the 3 crashes?

[woohyuknrg]

1st crash:
RLMException · No object with key '1310798' in 'class_PosModule'
0 CoreFoundation
__exceptionPreprocess
1 libobjc.A.dylib
objc_exception_throw
2 Realm
RLMRealm.mm:965:9
-[RLMRealm refresh]
3 RealmSwift
Realm.swift:903:25
Realm.refresh()
4 YMPosiOS
DatabaseManager.swift:50:35
DatabaseManager.realm1()
5 YMPosiOS
MiddlewareViewController.swift:141:42
specialized MiddlewareViewController.toEmployeeLogin(:)
6 YMPosiOS
MiddlewareViewController.swift
MiddlewareViewController.toEmployeeLogin(:)
7 YMPosiOS
YMPosiOS
closure #1 in closure #3 in TablePanelAlertViewController.setupViews()
8 YMPosiOS

thunk for @escaping @callee_guaranteed () -> ()
9 UIKitCore
-[UIPresentationController transitionDidFinish:]
10 UIKitCore
___56-[UIPresentationController runTransitionForCurrentState]_block_invoke.437
11 UIKitCore
-[_UIViewControllerTransitionContext completeTransition:]
12 YMPosiOS

thunk for @escaping @callee_guaranteed (@unowned Bool) -> ()
13 UIKitCore
-[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:]
14 UIKitCore
-[UIViewAnimationState sendDelegateAnimationDidStop:finished:]
15 UIKitCore
-[UIViewAnimationState animationDidStop:finished:]
16 UIKitCore
-[UIViewAnimationState animationDidStop:finished:]
17 QuartzCore
CA::Layer::run_animation_callbacks(void*)
18 libdispatch.dylib
__dispatch_client_callout
19 libdispatch.dylib
__dispatch_main_queue_callback_4CF$VARIANT$mp
20 CoreFoundation
_CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE
21 CoreFoundation
___CFRunLoopRun
22 CoreFoundation
_CFRunLoopRunSpecific
23 GraphicsServices
_GSEventRunModal
24 UIKitCore
-[UIApplication _run]
25 UIKitCore
_UIApplicationMain
26 YMPosiOS
AppDelegate.swift:33:16
main
27 dyld
start

[woohyuknrg]

2 other crashes:

Missing stacktrace:
This event contains no stacktrace
View Details
realm::KeyNotFound · No object with key '0' in 'class_Holiday'
0 unknown file unknown method

[woohyuknrg]

@ericjordanmossman We get realm file from user's device，here's the video link open with Realm Studio: https://share.getcloudapp.com/5zuPREyr

You can notice that when I scroll to the last records of 'OrderPayment', it shows "No object with key '1441824' in 'class_GuestPayment'", similar to App crash report.

Then I check GuestPayment, the last a few records' identifier property value are strange. I set identifier = UUID().uuidString.replacingOccurrences(of: "-", with: ""), but last records' identifier aren't the value I expect.

I think something broken when store data to realm. This impact our app seriously. Hope to fix this issue soon. Thank you very much!

[leemaguire]

@finnschiermer @jedelbo can you have any input on the potential cause of this issue?

[woohyuknrg]

Maybe something related to device low memory?

[jedelbo]

@woohyuknrg Would it be possible for you to share the erroneous file with us? You can send it to realm-help@mongodb.com.

[woohyuknrg]

@jedelbo I have sent the file to your email

[jedelbo]

The file is clearly corrupted. This could be fixed by realm/realm-core#5993. Be aware that the fix will not fix already corrupted files, but hopefully prevent creating corrupted files in the future.

[woohyuknrg]

When will the fixed version be released?

[jedelbo]

The fix is included in v10.33.0 that was released last week.