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CPUCache (Linux): makes shared cache dedupe key boundary-safe

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Fixes #2228
This commit is contained in:
Carter Li
2026-03-16 09:52:43 +08:00
parent 81984e6e97
commit ea4a4f0691
1 changed files with 6 additions and 3 deletions
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src/detection/cpucache/cpucache_linux.c
+6 -3
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@@ -44,12 +44,15 @@ static const char* parseCpuCacheIndex(FFstrbuf* path, FFCPUCacheResult* result,
ffStrbufSubstrBefore(path, baseLen);
ffStrbufAppendS(path, "/shared_cpu_list");
if (!ffReadFileBuffer(path->chars, buffer))
return "ffReadFileBuffer(\"/sys/devices/system/cpu/cpuX/cache/indexX/shared_cpu_list\") == NULL";
ffStrbufClear(buffer);
ffStrbufAppendC(buffer, '[');
if (!ffAppendFileBuffer(path->chars, buffer))
return "ffAppendFileBuffer(\"/sys/devices/system/cpu/cpuX/cache/indexX/shared_cpu_list\") == NULL";
ffStrbufTrimRightSpace(buffer);
// deduplicate shared caches
ffStrbufAppendF(buffer, "_%u_%u_%u_%u\n", level, sizeKb, lineSize, cacheType);
ffStrbufAppendF(buffer, "_%u_%u_%u_%u]", level, sizeKb, lineSize, cacheType);
if (ffStrbufContain(added, buffer)) return NULL;
ffStrbufAppend(added, buffer);
ffCPUCacheAddItem(result, level, sizeKb * 1024, lineSize, cacheType);