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Fix forkserver options (#771)

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Dongjia "toka" Zhang 2022-09-09 02:42:16 +02:00 committed by GitHub
parent 0fe8192976
commit b863142829
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1 changed files with 7 additions and 1 deletions
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8
libafl/src/executors/forkserver.rs
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@ -614,7 +614,13 @@ impl<'a, SP> ForkserverExecutorBuilder<'a, SP> {
} }
println!("All right - fork server is up."); println!("All right - fork server is up.");
// If forkserver is responding, we then check if there's any option enabled. // If forkserver is responding, we then check if there's any option enabled.
if status & FS_OPT_ENABLED == FS_OPT_ENABLED { // We'll send 4-bytes message back to the forkserver to tell which features to use
// The forkserver is listening to our response if either shmem fuzzing is enabled or auto dict is enabled
// <https://github.com/AFLplusplus/AFLplusplus/blob/147654f8715d237fe45c1657c87b2fe36c4db22a/instrumentation/afl-compiler-rt.o.c#L1026>
if status & FS_OPT_ENABLED == FS_OPT_ENABLED
&& (status & FS_OPT_SHDMEM_FUZZ == FS_OPT_SHDMEM_FUZZ
|| status & FS_OPT_AUTODICT == FS_OPT_AUTODICT)
{
let mut send_status = FS_OPT_ENABLED; let mut send_status = FS_OPT_ENABLED;
if (status & FS_OPT_SHDMEM_FUZZ == FS_OPT_SHDMEM_FUZZ) && map.is_some() { if (status & FS_OPT_SHDMEM_FUZZ == FS_OPT_SHDMEM_FUZZ) && map.is_some() {