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Add -fno-stack-protector to eBPF program compile line #42

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Merged
kesheldr merged 2 commits into from
Nov 29, 2021
Merged

Add -fno-stack-protector to eBPF program compile line #42

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40344e8
Add -fno-stack-protector to epbf programs when compiling
ckane Nov 5, 2021
af2769b
Initialize the "empty" array to all zeroes, to quell a compiler warning.
ckane Nov 5, 2021
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2 changes: 1 addition & 1 deletion CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -510,7 +510,7 @@ set(CLANG_INCLUDES
# function to make ebpf programs
function(build_ebpf ebpfsrc)
add_custom_command(OUTPUT ${ebpfsrc}.o
COMMAND "${CLANG}" -nostdinc -isystem `gcc -print-file-name=include` ${CLANG_INCLUDES} ${CLANG_DEFINES} -O2 ${CLANG_OPTIONS} -emit-llvm -c "${CMAKE_SOURCE_DIR}/ebpfKern/${ebpfsrc}.c" -o -| "${LLC}" -march=bpf -filetype=obj -o "${ebpfsrc}.o"
COMMAND "${CLANG}" -nostdinc -isystem `gcc -print-file-name=include` ${CLANG_INCLUDES} ${CLANG_DEFINES} -O2 ${CLANG_OPTIONS} -emit-llvm -fno-stack-protector -c "${CMAKE_SOURCE_DIR}/ebpfKern/${ebpfsrc}.c" -o -| "${LLC}" -march=bpf -filetype=obj -o "${ebpfsrc}.o"
COMMENT "Building EBPF object ${ebpfsrc}.o"
DEPENDS ebpfKern/${ebpfsrc}.c ${EBPF_DEPENDS}
)
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2 changes: 1 addition & 1 deletion networkTracker.cpp
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Expand Up @@ -866,7 +866,7 @@ extern "C" bool NetworkTrackerSeenAccept(NetworkTracker *n, bool IPv4, const BYT
return false;
}

BYTE empty[16];
BYTE empty[16] = {0};
AddrAndPort d(empty, IPv4, 0);

if (n->SeenAccept(AddrAndPort(sourceAddr, IPv4, sourcePort), &d)) {
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