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[TCPIP] Don't assume the TEB is always defined

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Fixes the crash in kmtest:TcpIpConnect test.
This commit is contained in:
Pierre Schweitzer
2018-12-31 13:59:58 +01:00
parent ccb8c906b0
commit 89a4cde14a
1 changed files with 7 additions and 1 deletions
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8
drivers/network/tcpip/tcpip/fileobjs.c
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@@ -396,6 +396,7 @@ NTSTATUS FileOpenAddress(
PVOID Options)
{
PADDRESS_FILE AddrFile;
PTEB Teb;
TI_DbgPrint(MID_TRACE, ("Called (Proto %d).\n", Protocol));
@@ -429,7 +430,12 @@ NTSTATUS FileOpenAddress(
AddrFile->BCast = 1;
AddrFile->HeaderIncl = 1;
AddrFile->ProcessId = PsGetCurrentProcessId();
AddrFile->SubProcessTag = ((PTEB)PsGetCurrentThreadTeb())->SubProcessTag;
Teb = PsGetCurrentThreadTeb();
if (Teb != NULL) {
AddrFile->SubProcessTag = Teb->SubProcessTag;
}
KeQuerySystemTime(&AddrFile->CreationTime);
/* Make sure address is a local unicast address or 0 */