CTD after S12 update. Mem violation?

I don't know how to convert dmp to txt, but I loaded the dmp file below as an example.

Dump Summary
------------
Dump File: 44b97c60-0c5f-46f1-be63-12210847cdbc.dmp : W:\Steam\steamapps\common\Apex Legends\Crashpad\db\44b97c60-0c5f-46f1-be63-12210847cdbc.dmp
Last Write Time: 2/11/2022 4:07:36 AM
Process Name: r5apex.exe : W:\Steam\steamapps\common\Apex Legends\r5apex.exe
Process Architecture: x64
Exception Code: 0xC0000005
Exception Information: The thread tried to read from or write to a virtual address for which it does not have the appropriate access.
Heap Information: Not Present

System Information
------------------
OS Version: 10.0.19043
CLR Version(s):

Modules
-------
Module Name Module Path Module Version
----------- ----------- --------------
r5apex.exe W:\Steam\steamapps\common\Apex Legends\r5apex.exe 1.0.0.0
ntdll.dll C:\Windows\System32\ntdll.dll 10.0.19041.1466
kernel32.dll C:\Windows\System32\kernel32.dll 10.0.19041.1503
KERNELBASE.dll C:\Windows\System32\KERNELBASE.dll 10.0.19041.1503
shell32.dll C:\Windows\System32\shell32.dll 10.0.19041.1503
msvcp_win.dll C:\Windows\System32\msvcp_win.dll 10.0.19041.789
ucrtbase.dll C:\Windows\System32\ucrtbase.dll 10.0.19041.789
user32.dll C:\Windows\System32\user32.dll 10.0.19041.1503
win32u.dll C:\Windows\System32\win32u.dll 10.0.19041.1526
gdi32.dll C:\Windows\System32\gdi32.dll 10.0.19041.1202
gdi32full.dll C:\Windows\System32\gdi32full.dll 10.0.19041.1466
advapi32.dll C:\Windows\System32\advapi32.dll 10.0.19041.1466
msvcrt.dll C:\Windows\System32\msvcrt.dll 7.0.19041.546
sechost.dll C:\Windows\System32\sechost.dll 10.0.19041.1466
rpcrt4.dll C:\Windows\System32\rpcrt4.dll 10.0.19041.1466
ole32.dll C:\Windows\System32\ole32.dll 10.0.19041.1202
combase.dll C:\Windows\System32\combase.dll 10.0.19041.1348
imm32.dll C:\Windows\System32\imm32.dll 10.0.19041.546
ws2_32.dll C:\Windows\System32\ws2_32.dll 10.0.19041.546
bcrypt.dll C:\Windows\System32\bcrypt.dll 10.0.19041.1023
avifil32.dll C:\Windows\System32\avifil32.dll 10.0.19041.1
Wldap32.dll C:\Windows\System32\Wldap32.dll 10.0.19041.546
IPHLPAPI.DLL C:\Windows\System32\IPHLPAPI.DLL 10.0.19041.546
mileswin64.dll W:\Steam\steamapps\common\Apex Legends\mileswin64.dll 10.0.61.4
binkawin64.dll W:\Steam\steamapps\common\Apex Legends\binkawin64.dll 10.0.61.4
normaliz.dll C:\Windows\System32\normaliz.dll 10.0.19041.546
d3d11.dll C:\Windows\System32\d3d11.dll 10.0.19041.1202
winmm.dll C:\Windows\System32\winmm.dll 10.0.19041.546
D3DCOMPILER_43.dll C:\Windows\System32\D3DCOMPILER_43.dll 9.29.952.3111
msvfw32.dll C:\Windows\System32\msvfw32.dll 10.0.19041.1
crypt32.dll C:\Windows\System32\crypt32.dll 10.0.19041.1320
msacm32.dll C:\Windows\System32\msacm32.dll 10.0.19041.1
avrt.dll C:\Windows\System32\avrt.dll 10.0.19041.546
steam_api64.dll W:\Steam\steamapps\common\Apex Legends\steam_api64.dll 5.25.65.21
bink2w64.dll W:\Steam\steamapps\common\Apex Legends\bink2w64.dll 1.999.4.0
dxgi.dll C:\Windows\System32\dxgi.dll 10.0.19041.1266
oleaut32.dll C:\Windows\System32\oleaut32.dll 10.0.19041.985
comctl32.dll C:\Windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_5.82.19041.1110_none_792d1c772443f647\comctl32.dll 5.82.19041.1110
dsound.dll C:\Windows\System32\dsound.dll 10.0.19041.1
winmmbase.dll C:\Windows\System32\winmmbase.dll 10.0.19041.1
powrprof.dll C:\Windows\System32\powrprof.dll 10.0.19041.546
setupapi.dll C:\Windows\System32\setupapi.dll 10.0.19041.1503
cfgmgr32.dll C:\Windows\System32\cfgmgr32.dll 10.0.19041.1151
hid.dll C:\Windows\System32\hid.dll 10.0.19041.546
wininet.dll C:\Windows\System32\wininet.dll 11.0.19041.1320
GameOverlayRenderer64.dll C:\Program Files (x86)\Steam\GameOverlayRenderer64.dll 7.0.91.85
psapi.dll C:\Windows\System32\psapi.dll 10.0.19041.546
umpdc.dll C:\Windows\System32\umpdc.dll 0.0.0.0
version.dll C:\Windows\System32\version.dll 10.0.19041.546
shlwapi.dll C:\Windows\System32\shlwapi.dll 10.0.19041.1023
steamclient64.dll C:\Program Files (x86)\Steam\steamclient64.dll 7.0.91.85
imagehlp.dll C:\Windows\System32\imagehlp.dll 10.0.19041.1415
secur32.dll C:\Windows\System32\secur32.dll 10.0.19041.546
tier0_s64.dll C:\Program Files (x86)\Steam\tier0_s64.dll 7.0.91.85
mswsock.dll C:\Windows\System32\mswsock.dll 10.0.19041.546
vstdlib_s64.dll C:\Program Files (x86)\Steam\vstdlib_s64.dll 7.0.91.85
sspicli.dll C:\Windows\System32\sspicli.dll 10.0.19041.1266
SHCore.dll C:\Windows\System32\SHCore.dll 10.0.19041.1387
CRYPTBASE.DLL C:\Windows\System32\CRYPTBASE.DLL 10.0.19041.546
bcryptPrimitives.dll C:\Windows\System32\bcryptPrimitives.dll 10.0.19041.1415
msasn1.dll C:\Windows\System32\msasn1.dll 10.0.19041.546
cryptnet.dll C:\Windows\System32\cryptnet.dll 10.0.19041.906
drvstore.dll C:\Windows\System32\drvstore.dll 10.0.19041.1320
devobj.dll C:\Windows\System32\devobj.dll 10.0.19041.1151
wldp.dll C:\Windows\System32\wldp.dll 10.0.19041.1320
kernel.appcore.dll C:\Windows\System32\kernel.appcore.dll 10.0.19041.546
dbghelp.dll C:\Windows\System32\dbghelp.dll 10.0.19041.867
dbgcore.dll C:\Windows\System32\dbgcore.dll 10.0.19041.789
nvldumdx.dll C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_31a2adf8c49e7799\nvldumdx.dll 30.0.15.1165
wintrust.dll C:\Windows\System32\wintrust.dll 10.0.19041.1503
cryptsp.dll C:\Windows\System32\cryptsp.dll 10.0.19041.546
rsaenh.dll C:\Windows\System32\rsaenh.dll 10.0.19041.1052
nvwgf2umx.dll C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_31a2adf8c49e7799\nvwgf2umx.dll 30.0.15.1165
windows.storage.dll C:\Windows\System32\windows.storage.dll 10.0.19041.1503
nvspcap64.dll C:\Windows\System32\nvspcap64.dll 3.25.0.84
profapi.dll C:\Windows\System32\profapi.dll 10.0.19041.844
ntmarta.dll C:\Windows\System32\ntmarta.dll 10.0.19041.546
NvCamera64.dll C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_31a2adf8c49e7799\NvCamera\NvCamera64.dll 7.1.797.808
XINPUT9_1_0.dll C:\Windows\System32\XINPUT9_1_0.dll 10.0.19041.1
dinput8.dll C:\Windows\System32\dinput8.dll 10.0.19041.1
WindowsCodecs.dll C:\Windows\System32\WindowsCodecs.dll 10.0.19041.1151
inputhost.dll C:\Windows\System32\inputhost.dll 10.0.19041.906
propsys.dll C:\Windows\System32\propsys.dll 7.0.19041.1023
CoreMessaging.dll C:\Windows\System32\CoreMessaging.dll 10.0.19041.746
WinTypes.dll C:\Windows\System32\WinTypes.dll 10.0.19041.1348
CoreUIComponents.dll C:\Windows\System32\CoreUIComponents.dll 10.0.19041.546
DXCore.dll C:\Windows\System32\DXCore.dll 10.0.19041.546
d3dcompiler_47_64.dll C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_31a2adf8c49e7799\NvCamera\d3dcompiler_47_64.dll 6.3.9600.16384
nvapi64.dll C:\Windows\System32\nvapi64.dll 30.0.15.1165
nvcuda64.dll C:\Windows\System32\DriverStore\FileRepository\nv_dispi.inf_amd64_31a2adf8c49e7799\nvcuda64.dll 30.0.15.1165
XInput1_3.dll C:\Windows\System32\XInput1_3.dll 9.18.944.0
EasyAntiCheat_x64.dll W:\Steam\steamapps\common\Apex Legends\EasyAntiCheat_x64.dll 2.0.0.0
msctf.dll C:\Windows\System32\msctf.dll 10.0.19041.1503
clbcatq.dll C:\Windows\System32\clbcatq.dll 2001.12.10941.16384
textinputframework.dll C:\Windows\System32\textinputframework.dll 10.0.19041.1503
mscms.dll C:\Windows\System32\mscms.dll 10.0.19041.746
ColorAdapterClient.dll C:\Windows\System32\ColorAdapterClient.dll 10.0.19041.546
userenv.dll C:\Windows\System32\userenv.dll 10.0.19041.572
Windows.Internal.Graphics.Display.DisplayColorManagement.dll C:\Windows\System32\Windows.Internal.Graphics.Display.DisplayColorManagement.dll 10.0.19041.1266
MMDevAPI.dll C:\Windows\System32\MMDevAPI.dll 10.0.19041.1503
wdmaud.drv C:\Windows\System32\wdmaud.drv 10.0.19041.1
ksuser.dll C:\Windows\System32\ksuser.dll 10.0.19041.1
AudioSes.dll C:\Windows\System32\AudioSes.dll 10.0.19041.1503
msacm32.drv C:\Windows\System32\msacm32.drv 10.0.19041.488
midimap.dll C:\Windows\System32\midimap.dll 10.0.19041.488
Windows.UI.dll C:\Windows\System32\Windows.UI.dll 10.0.19041.746
WindowManagementAPI.dll C:\Windows\System32\WindowManagementAPI.dll 0.0.0.0
twinapi.appcore.dll C:\Windows\System32\twinapi.appcore.dll 10.0.19041.964
XAudio2_6.dll C:\Windows\System32\XAudio2_6.dll 9.28.1886.0
resourcepolicyclient.dll C:\Windows\System32\resourcepolicyclient.dll 10.0.19041.546
dwmapi.dll C:\Windows\System32\dwmapi.dll 10.0.19041.746
MessageBus.dll C:\Program Files\NVIDIA Corporation\NvContainer\MessageBus.dll 1.22.2758.1620
nsi.dll C:\Windows\System32\nsi.dll 10.0.19041.610
dhcpcsvc.dll C:\Windows\System32\dhcpcsvc.dll 10.0.19041.546
ui.dll W:\Steam\steamapps\common\Apex Legends\paks\Win64\ui.dll 0.0.0.0
NapiNSP.dll C:\Windows\System32\NapiNSP.dll 10.0.19041.546
pnrpnsp.dll C:\Windows\System32\pnrpnsp.dll 10.0.19041.546
wshbth.dll C:\Windows\System32\wshbth.dll 10.0.19041.546
nlaapi.dll C:\Windows\System32\nlaapi.dll 10.0.19041.1151
dnsapi.dll C:\Windows\System32\dnsapi.dll 10.0.19041.1320
winrnr.dll C:\Windows\System32\winrnr.dll 10.0.19041.546
rasadhlp.dll C:\Windows\System32\rasadhlp.dll 10.0.19041.546
FWPUCLNT.DLL C:\Windows\System32\FWPUCLNT.DLL 10.0.19041.1526
wbemprox.dll C:\Windows\System32\wbem\wbemprox.dll 10.0.19041.1320
wbemcomn.dll C:\Windows\System32\wbemcomn.dll 10.0.19041.1081
wbemsvc.dll C:\Windows\System32\wbem\wbemsvc.dll 10.0.19041.1320
fastprox.dll C:\Windows\System32\wbem\fastprox.dll 10.0.19041.546
amsi.dll C:\Windows\System32\amsi.dll 10.0.19041.746
MpOAV.dll C:\ProgramData\Microsoft\Windows Defender\Platform\4.18.2201.10-0\MpOAV.dll 4.18.2201.10
dhcpcsvc6.DLL C:\Windows\System32\dhcpcsvc6.DLL 10.0.19041.546
schannel.dll C:\Windows\System32\schannel.dll 10.0.19041.1466
mskeyprotect.dll C:\Windows\System32\mskeyprotect.dll 10.0.19041.1202
ntasn1.dll C:\Windows\System32\ntasn1.dll 10.0.19041.546
ncrypt.dll C:\Windows\System32\ncrypt.dll 10.0.19041.662
ncryptsslp.dll C:\Windows\System32\ncryptsslp.dll 10.0.19041.546
wevtapi.dll C:\Windows\System32\wevtapi.dll 10.0.19041.1266

Hi.

I have the same issue.

Based on the dump obtained by crashpad I can assume that it is a simple nullptr issue.

Reg rcx was null when this instruction executed  mov word ptr [rcx+38h],dx

And I see NULL_CLASS_PTR_WRITE in all dumps provided by other people.

So we can say that rcx must have contained a pointer to the class.

It is certain that it has nothing to do with overclocking.