Hi,
We’ve been getting random crashes on some play tester’s machines and we’ve been struggling to debug. it happens when the player works around in a room and they all crash on the same line in the stacktrace. we were able to locate the crash source using winDBG
Microsoft (R) Windows Debugger Version 10.0.22415.1002 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [C:\Users\Leon\Desktop\Crashes\Crash_2021-08-17_014728425\crash.dmp]
User Mini Dump File: Only registers, stack and portions of memory are available
************* Path validation summary **************
Response Time (ms) Location
Deferred srv*
Symbol search path is: srv*
Executable search path is:
Windows 10 Version 19043 MP (16 procs) Free x64
Product: WinNt, suite: SingleUserTS Personal
Edition build lab: 19041.1.amd64fre.vb_release.191206-1406
Machine Name:
Debug session time: Mon Aug 16 21:47:28.000 2021 (UTC - 4:00)
System Uptime: not available
Process Uptime: 0 days 0:07:00.000
................................................................
.......................................
This dump file has an exception of interest stored in it.
The stored exception information can be accessed via .ecxr.
(a38.5f80): Access violation - code c0000005 (first/second chance not available)
For analysis of this file, run !analyze -v
ntdll!NtWaitForMultipleObjects+0x14:
00007ffd`db9cd974 c3 ret
0:011> !analyze -v
ERROR: FindPlugIns 8007007b
*******************************************************************************
* *
* Exception Analysis *
* *
*******************************************************************************
*** WARNING: Unable to verify checksum for mono-2.0-bdwgc.dll
*** WARNING: Unable to verify timestamp for nvwgf2umx.dll
*** WARNING: Unable to verify timestamp for atidxx64.dll
*** WARNING: Unable to verify timestamp for amdihk64.dll
*** WARNING: Unable to verify timestamp for graphics-hook64.dll
KEY_VALUES_STRING: 1
Key : AV.Fault
Value: Execute
Key : Analysis.CPU.mSec
Value: 4515
Key : Analysis.DebugAnalysisManager
Value: Create
Key : Analysis.Elapsed.mSec
Value: 15761
Key : Analysis.Init.CPU.mSec
Value: 405
Key : Analysis.Init.Elapsed.mSec
Value: 10664
Key : Analysis.Memory.CommitPeak.Mb
Value: 256
Key : Timeline.Process.Start.DeltaSec
Value: 420
Key : WER.OS.Branch
Value: vb_release
Key : WER.OS.Timestamp
Value: 2019-12-06T14:06:00Z
Key : WER.OS.Version
Value: 10.0.19041.1
Key : WER.Process.Version
Value: 9.18.944.0
CONTEXT: (.ecxr)
rax=0000000000000000 rbx=0000000000030013 rcx=000001e975f55d60
rdx=000000000000000b rsi=000001e975af2908 rdi=000000341cdff980
rip=0000000000000001 rsp=000000341cdff4f8 rbp=000000341cdff850
r8=0000000000030013 r9=0000000000000001 r10=00007ffd743911f0
r11=000000341cdff570 r12=0000000000000000 r13=0000000000000012
r14=000001e950c10010 r15=000001e97543f9a0
iopl=0 nv up ei pl nz na pe nc
cs=0033 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010202
00000000`00000001 ?? ???
Resetting default scope
EXCEPTION_RECORD: (.exr -1)
ExceptionAddress: 0000000000000001
ExceptionCode: c0000005 (Access violation)
ExceptionFlags: 00000000
NumberParameters: 2
Parameter[0]: 0000000000000008
Parameter[1]: 0000000000000001
Attempt to execute non-executable address 0000000000000001
PROCESS_NAME: Keyword.exe
EXECUTE_ADDRESS: 1
FAILED_INSTRUCTION_ADDRESS:
+0
00000000`00000001 ?? ???
ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.
EXCEPTION_CODE_STR: c0000005
EXCEPTION_PARAMETER1: 0000000000000008
EXCEPTION_PARAMETER2: 0000000000000001
STACK_TEXT:
00000034`1cdff4f8 00007ffd`733368d7 : 00000000`0100010f 00000000`0100010f 00000000`00030013 00000000`00000000 : 0x1
00000034`1cdff500 00000000`0100010f : 00000000`0100010f 00000000`00030013 00000000`00000000 ff000201`00000001 : UnityPlayer!BatchRenderer::RenderBatch+0x77
00000034`1cdff508 00000000`0100010f : 00000000`00030013 00000000`00000000 ff000201`00000001 00080000`000800ff : 0x100010f
00000034`1cdff510 00000000`00030013 : 00000000`00000000 ff000201`00000001 00080000`000800ff 00000000`00000000 : 0x100010f
00000034`1cdff518 00000000`00000000 : ff000201`00000001 00080000`000800ff 00000000`00000000 000001e9`00000001 : 0x30013
FAULTING_SOURCE_LINE: C:\buildslave\unity\build\Runtime\Camera\RenderLoops\BatchRenderer.cpp
FAULTING_SOURCE_FILE: C:\buildslave\unity\build\Runtime\Camera\RenderLoops\BatchRenderer.cpp
FAULTING_SOURCE_LINE_NUMBER: 367
FAULTING_SOURCE_CODE:
No source found for 'C:\buildslave\unity\build\Runtime\Camera\RenderLoops\BatchRenderer.cpp'
SYMBOL_NAME: unityplayer!BatchRenderer::RenderBatch+77
MODULE_NAME: UnityPlayer
IMAGE_NAME: UnityPlayer.dll
STACK_COMMAND: ~11s ; .ecxr ; kb
FAILURE_BUCKET_ID: SOFTWARE_NX_FAULT_c0000005_UnityPlayer.dll!BatchRenderer::RenderBatch
OS_VERSION: 10.0.19041.1
BUILDLAB_STR: vb_release
OSPLATFORM_TYPE: x64
OSNAME: Windows 10
IMAGE_VERSION: 2020.3.6.35766
FAILURE_ID_HASH: {e97d9fd0-5b5b-1def-fa2f-1fa6daf03059}
Followup: MachineOwner
---------we don’t have access to the source file, so this is where our investigation halts.
the machine that produced this crash is fairly highend(AMD Ryzen 9 4900H NVIDIA RTX 2060 16 GB RAM).
We’ve found that turning off Graphics Job in player settings help, but not always. the crash still happens. i also don’t think that’s a fix.
the project is fairly big and since it happens randomly i couldn’t come up with a reproducible project. but let me know if there are additonal info i can provide to assist tracking down the issue.
