googleprojectzero
[WinAfl] [DynamoRIO] winAfl crash when using "Sample delivery via shared memory"
HI
Setup details:
OS: Windows Server 2022 Standard, 21H2, 64bit OS, x64-based processor, 40 cores WinAFL with DynamoRIO:
winAFL: 1.17 based on AFL 2.43b compiled 64bit version with visual studio 2022
DynamoRIO: 11.3.0 took the already compiled binaries ( did not compile it my self )
I implemented the sample delivery via regular file and also via shared memory
when i run the shared memory version i get the following error:
WinAFL internal crash at PC 0x00007ff6212b2afc
on the "Status Screen", i get the following error message 0 processes nudged nudge operation failed, verify permissions and parameters.
Important Note: the frequency of this error is bigger when using parallel fuzzers ( for example: using 1 master and 3 slaves )
compared to regular sample delivery via disk, this error is not triggered even in parallel fuzzers
Note: shared memory sample delivery was implemented according to the given example: https://github.com/googleprojectzero/Jackalope/blob/6d92931b2cf614699e2a023254d5ee7e20f6e34b/test.cpp#L41 https://github.com/googleprojectzero/Jackalope/blob/6d92931b2cf614699e2a023254d5ee7e20f6e34b/test.cpp#L111
Hi, can you reproduce the issue using https://github.com/googleprojectzero/Jackalope/blob/main/test.cpp as target, or only with your custom target? How often does the issue occur?
