llvm/vfio: dump fuzzer logs to file

Fuzzer logs may become huge, it's better to store it as file.

Signed-off-by: Sebastian Brzezinka <sebastian.brzezinka@intel.com>
Change-Id: Ia85eb88fd648dc2fb90f5a3bd389e6df2ef0106e
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15365
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

test/fuzz/llvm.sh

@@ -10,7 +10,9 @@ source "$rootdir/test/common/autotest_common.sh"
 
 fuzzers=($(get_fuzzer_targets))
 
-mkdir -p $rootdir/../corpus/
+llvm_out=$output_dir/llvm
+
+mkdir -p $rootdir/../corpus/ $llvm_out
 
 for fuzzer in "${fuzzers[@]}"; do
 	case "$fuzzer" in

test/fuzz/llvm/vfio/run.sh

@@ -57,7 +57,7 @@ function run_fuzz() {
 	else
 		fuzzer_type=$((interval % fuzz_num))
 	fi
-	start_llvm_fuzz $fuzzer_type
+	start_llvm_fuzz $fuzzer_type &> $output_dir/llvm/llvm_vfio_$fuzzer_type.txt
 }
 
 testdir=$(readlink -f $(dirname $0))