Suricata

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==1==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 16 byte(s) in 1 object(s) allocated from:
    #0 0x536742 in calloc /src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:154:3
    #1 0x8bc643 in SCCallocFunc suricata/src/util-mem.c:57:20
    #2 0x721a3b in SigMatchList2DataArray suricata/src/detect-parse.c:1602:41
    #3 0x67bfcc in DetectEngineAppInspectionEngine2Signature suricata/src/detect-engine.c:484:19
    #4 0x6a7986 in SigMatchPrepare suricata/src/detect-engine-build.c:1830:9
    #5 0x6a77e3 in SigGroupBuild suricata/src/detect-engine-build.c:1924:9
    #6 0x6b6721 in SigLoadSignatures suricata/src/detect-engine-loader.c:370:9
    #7 0x687d3d in DetectEngineReload suricata/src/detect-engine.c:4052:9
    #8 0x5691c9 in LLVMFuzzerTestOneInput suricata/src/tests/fuzz/fuzz_sigpcap.c:178:9
    #9 0x46ea31 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:556:15
    #10 0x459551 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:292:6

Testcase for the fuzz_sigpcap target attached.
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21911

Rule is:
alert tcp any any -> any 6 file_data;content:" ";dns.query;content:" ";