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[NTOS:KE] Zero out ExceptionFrame member in Syscall handler

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This commit is contained in:
Timo Kreuzer 2018-05-15 12:43:37 +02:00
parent 366e8a840c
commit 04f0c7d0d7
1 changed files with 3 additions and 0 deletions
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3
ntoskrnl/ke/amd64/stubs.c
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@ -330,6 +330,9 @@ KiSystemCallHandler(
TrapFrame->TrapFrame = (ULONG64)Thread->TrapFrame; TrapFrame->TrapFrame = (ULONG64)Thread->TrapFrame;
Thread->TrapFrame = TrapFrame; Thread->TrapFrame = TrapFrame;
/* We don't have an exception frame yet */
TrapFrame->ExceptionFrame = 0;
/* Before enabling interrupts get the user rsp from the KPCR */ /* Before enabling interrupts get the user rsp from the KPCR */
UserRsp = __readgsqword(FIELD_OFFSET(KIPCR, UserRsp)); UserRsp = __readgsqword(FIELD_OFFSET(KIPCR, UserRsp));
TrapFrame->Rsp = UserRsp; TrapFrame->Rsp = UserRsp;