Crash when interacting with the song editor while automating solos between two mixer channels

System Information

Windows 11 24H2 Build 26100.2033

LMMS Version(s)

1.3.0-alpha.1.768+pr5147.ga94c8f1c0 (win32/x86_64, Qt 5.15.2, MSVC 192930154)

Most Recent Working Version

No response

Bug Summary

When interacting with the song editor window while automating two mixer channels' solo, there's a chance that LMMS can crash.

Expected Behaviour

Not crash

Steps To Reproduce

Open the attached project in LMMS
Play to the point of the automation, then click repeatedly.
Repeat step 2 until the program crashes

Logs

WinDbg crash dump from !analyze -v

*******************************************************************************
*                                                                             *
*                        Exception Analysis                                   *
*                                                                             *
*******************************************************************************

*** WARNING: Unable to verify checksum for lmms.exe
*** WARNING: Unable to verify checksum for SDL2.dll

KEY_VALUES_STRING: 1

    Key  : Analysis.CPU.mSec
    Value: 1593

    Key  : Analysis.Elapsed.mSec
    Value: 4209

    Key  : Analysis.IO.Other.Mb
    Value: 0

    Key  : Analysis.IO.Read.Mb
    Value: 0

    Key  : Analysis.IO.Write.Mb
    Value: 0

    Key  : Analysis.Init.CPU.mSec
    Value: 515

    Key  : Analysis.Init.Elapsed.mSec
    Value: 3730

    Key  : Analysis.Memory.CommitPeak.Mb
    Value: 139

    Key  : Analysis.Version.DbgEng
    Value: 10.0.27704.1001

    Key  : Analysis.Version.Description
    Value: 10.2408.27.01 amd64fre

    Key  : Analysis.Version.Ext
    Value: 1.2408.27.1

    Key  : Failure.Bucket
    Value: HEAP_CORRUPTION_ACTIONABLE_BlockNotBusy_DOUBLE_FREE_80000003_ucrtbase.dll!free_base

    Key  : Failure.Hash
    Value: {acbee290-6526-0d11-a472-1fa34480839d}

    Key  : Timeline.OS.Boot.DeltaSec
    Value: 40509

    Key  : Timeline.Process.Start.DeltaSec
    Value: 296

    Key  : WER.OS.Branch
    Value: ge_release

    Key  : WER.OS.Version
    Value: 10.0.26100.1

    Key  : WER.Process.Version
    Value: 0.0.0.0

FILE_IN_CAB:  lmms-crash.dmp

NTGLOBALFLAG:  0

APPLICATION_VERIFIER_FLAGS:  0

CONTEXT:  (.ecxr)
rax=0000000000000000 rbx=00000000c0000374 rcx=d005898145be0000
rdx=00007ff86f5a51c3 rsi=0000000000000001 rdi=00007ff8d470b0e0
rip=00007ff8d45dc7e8 rsp=0000001517afb930 rbp=0000001517afbd00
 r8=00007ff873c521f8  r9=0000000000000001 r10=0000001517afb210
r11=0000000000000002 r12=0000000000000000 r13=0000000000000000
r14=0000018c00260000 r15=0000018c07058df0
iopl=0         nv up ei pl nz na pe nc
cs=0033  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00000200
ntdll!RtlReportCriticalFailure+0x68:
00007ff8`d45dc7e8 cc              int     3
Resetting default scope

EXCEPTION_RECORD:  (.exr -1)
ExceptionAddress: 00007ff8d45dc7e8 (ntdll!RtlReportCriticalFailure+0x0000000000000068)
   ExceptionCode: 80000003 (Break instruction exception)
  ExceptionFlags: 00000000
NumberParameters: 1
   Parameter[0]: 0000000000000000

PROCESS_NAME:  lmms.exe

ERROR_CODE: (NTSTATUS) 0x80000003 - {EXCEPTION}  Breakpoint  A breakpoint has been reached.

EXCEPTION_CODE_STR:  80000003

EXCEPTION_PARAMETER1:  0000000000000000

ADDITIONAL_DEBUG_TEXT:  Followup set based on attribute [Heap_Error_Type] from Frame:[0] on thread:[PSEUDO_THREAD] ; Followup set based on attribute [Is_ChosenCrashFollowupThread] from Frame:[0] on thread:[PSEUDO_THREAD]

FAULTING_THREAD:  ffffffff

STACK_TEXT:  
00000000`00000000 00000000`00000000 ucrtbase!free_base+0x0

STACK_COMMAND:  !heap ; ** Pseudo Context ** ManagedPseudo ** Value: ffffffff ** ; kb

SYMBOL_NAME:  ucrtbase!free_base+0

MODULE_NAME: ucrtbase

IMAGE_NAME:  ucrtbase.dll

FAILURE_BUCKET_ID:  HEAP_CORRUPTION_ACTIONABLE_BlockNotBusy_DOUBLE_FREE_80000003_ucrtbase.dll!free_base

OS_VERSION:  10.0.26100.1

BUILDLAB_STR:  ge_release

OSPLATFORM_TYPE:  x64

OSNAME:  Windows 10

IMAGE_VERSION:  10.0.26100.1882

FAILURE_ID_HASH:  {acbee290-6526-0d11-a472-1fa34480839d}

Followup:     MachineOwner

Screenshots / Minimum Reproducible Project

debit debug.zip

If needed, I have multiple crash dumps of different projects that have the same issue. I can provide them by request of the maintainers

Please search the issue tracker for existing bug reports before submitting your own.

[X] I have searched all existing issues and confirmed that this is not a duplicate.

LMMS / lmms

Crash when interacting with the song editor while automating solos between two mixer channels #7556