Changeset 78738 in vbox for trunk/src

Timestamp:

May 24, 2019 11:57:42 PM (6 years ago)

Author:

vboxsync

Message:

Main: Fixed buggy count wraparound handling in GuestBase::generateContextID. bugref:9320

File:

• trunk/src/VBox/Main/src-client/GuestCtrlPrivate.cpp (modified) (1 diff)

trunk/src/VBox/Main/src-client/GuestCtrlPrivate.cpp

@@ -902 +902 @@
 
     uint32_t uCount = ASMAtomicIncU32(&mNextContextID);
-    if (uCount >= VBOX_GUESTCTRL_MAX_CONTEXTS)
-        uCount = 0;
+    uCount %= VBOX_GUESTCTRL_MAX_CONTEXTS;
 
     uint32_t uNewContextID = VBOX_GUESTCTRL_CONTEXTID_MAKE(uSessionID, uObjectID, uCount);