[Media Common] [VP][MOS] fix double free issue

pengwan1 · intel-mediadev · commit 081fc57f709d · 2024-09-18T23:31:51.000+08:00
set nullptr after free memory.
diff --git a/media_softlet/agnostic/common/os/mos_oca_rtlog_mgr.cpp b/media_softlet/agnostic/common/os/mos_oca_rtlog_mgr.cpp
@@ -124,13 +124,17 @@ void MosOcaRTLogMgr::UnregisterRes(OsContextNext *osDriverContext)
     if (!resInterface.osInterface || !resInterface.osInterface->pfnFreeResource)
     {
         MOS_SafeFreeMemory(resInterface.ocaRTLogResource);
+        resInterface.ocaRTLogResource = nullptr;
         MOS_SafeFreeMemory(resInterface.osInterface);
+        resInterface.osInterface = nullptr;
         return;
     }
     resInterface.osInterface->pfnFreeResource(resInterface.osInterface, resInterface.ocaRTLogResource);
     MOS_SafeFreeMemory(resInterface.ocaRTLogResource);
+    resInterface.ocaRTLogResource = nullptr;
     Mos_DestroyInterface(resInterface.osInterface);
     MOS_SafeFreeMemory(resInterface.osInterface);
+    resInterface.osInterface = nullptr;
 }
 
 MosOcaRTLogMgr::MosOcaRTLogMgr()

Original file line number	Diff line number	Diff line change
`@@ -124,13 +124,17 @@ void MosOcaRTLogMgr::UnregisterRes(OsContextNext *osDriverContext)`
`124`	`124`	`if (!resInterface.osInterface \|\| !resInterface.osInterface->pfnFreeResource)`
`125`	`125`	`{`
`126`	`126`	`MOS_SafeFreeMemory(resInterface.ocaRTLogResource);`
	`127`	`+ resInterface.ocaRTLogResource = nullptr;`
`127`	`128`	`MOS_SafeFreeMemory(resInterface.osInterface);`
	`129`	`+ resInterface.osInterface = nullptr;`
`128`	`130`	`return;`
`129`	`131`	`}`
`130`	`132`	`resInterface.osInterface->pfnFreeResource(resInterface.osInterface, resInterface.ocaRTLogResource);`
`131`	`133`	`MOS_SafeFreeMemory(resInterface.ocaRTLogResource);`
	`134`	`+ resInterface.ocaRTLogResource = nullptr;`
`132`	`135`	`Mos_DestroyInterface(resInterface.osInterface);`
`133`	`136`	`MOS_SafeFreeMemory(resInterface.osInterface);`
	`137`	`+ resInterface.osInterface = nullptr;`
`134`	`138`	`}`
`135`	`139`
`136`	`140`	`MosOcaRTLogMgr::MosOcaRTLogMgr()`