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11 changes: 11 additions & 0 deletions app/boards/native_sim_libfuzzer.conf
Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
# See https://docs.zephyrproject.org/latest/build/kconfig/setting.html#initial-conf

CONFIG_ZEPHYR_POSIX=y
CONFIG_ASSERT=y
CONFIG_EXCEPTION_DEBUG=y
CONFIG_ARCH_POSIX_TRAP_ON_FATAL=y
CONFIG_SYS_HEAP_BIG_ONLY=y
CONFIG_ZEPHYR_NATIVE_DRIVERS=y
CONFIG_ARCH_POSIX_LIBFUZZER=y
CONFIG_ZEPHYR_POSIX_FUZZ_TICKS=100
CONFIG_ASAN=y
16 changes: 3 additions & 13 deletions scripts/fuzz.sh
Original file line number Diff line number Diff line change
Expand Up @@ -103,18 +103,8 @@ main()
# This also drops _leading_ '--'.
shift $((OPTIND-1))

# Move this to a new fuzz.conf EXTRA_CONF_FILE if it grows bigger
local fuzz_configs=(
-DCONFIG_ZEPHYR_POSIX=y
-DCONFIG_ASSERT=y
-DCONFIG_EXCEPTION_DEBUG=y
-DCONFIG_ARCH_POSIX_TRAP_ON_FATAL=y
-DCONFIG_SYS_HEAP_BIG_ONLY=y
-DCONFIG_ZEPHYR_NATIVE_DRIVERS=y
-DCONFIG_ARCH_POSIX_LIBFUZZER=y
-DCONFIG_ZEPHYR_POSIX_FUZZ_TICKS=100
-DCONFIG_ASAN=y
)
# https://docs.zephyrproject.org/latest/build/kconfig/setting.html#initial-conf
local conf_files_list='prj.conf;boards/native_sim_libfuzzer.conf'

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can we make it so we can append to this list. I.e. the ASAN config would be split so we can use the base config with other sanitzer configs.

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Yes that's the idea. In some future PR(s) anyone can just go and (for instance) do:

if $something; then
   conf_files_list+=';debug.conf'


# Note there's never any reason to delete fuzz_corpus/.
# Don't trust `west build -p` because it is not 100% unreliable,
Expand All @@ -125,7 +115,7 @@ main()
# When passing conflicting -DVAR='VAL UE1' -DVAR='VAL UE2' to CMake,
# the last 'VAL UE2' wins. Previous ones are silently ignored.
west build -d build-fuzz -b native_sim "$SOF_TOP"/app/ -- \
"${fuzz_configs[@]}" "$@"
-DCONF_FILE="$conf_files_list" "$@"
)

if $BUILD_ONLY; then
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