[reactos] 02/02: [NTOS:KD64] Use KdpDprintf() instead of DbgPrint() for the debugger banner DPRINTs (#7540)

[Hermès Bélusca-Maïto]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=6cf426345b425e9328ebd0...

commit 6cf426345b425e9328ebd0b481f955b994dc0cd8
Author:     Hermès Bélusca-Maïto [e-mail]
AuthorDate: Thu Nov 28 22:53:10 2024 +0100
Commit:     Hermès Bélusca-Maïto [e-mail]
CommitDate: Tue Dec 3 22:14:02 2024 +0100

[NTOS:KD64] Use KdpDprintf() instead of DbgPrint() for the debugger banner DPRINTs (#7540)

Override DbgPrint(), used by the debugger banner DPRINTs,
    because KdInitSystem() can be called under the debugger lock
    by KdEnableDebugger(WithLock)().

In this case, when DbgPrint() (re-)enters the debugger via an
    interrupt and acquires the debugger lock, a deadlock occurs.
---
 ntoskrnl/kd64/kdinit.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ntoskrnl/kd64/kdinit.c b/ntoskrnl/kd64/kdinit.c
index a49655ff6cb..93f2bd7dfca 100644
--- a/ntoskrnl/kd64/kdinit.c
+++ b/ntoskrnl/kd64/kdinit.c
@@ -11,9 +11,18 @@

#include <ntoskrnl.h>
 #include <reactos/buildno.h>
+
 #define NDEBUG
 #include <debug.h>

+/*
+ * Override DbgPrint(), used by the debugger banner DPRINTs below,
+ * because KdInitSystem() can be called under the debugger lock by
+ * KdEnableDebugger(WithLock)().
+ */
+#define DbgPrint(fmt, ...) (KdpDprintf(fmt, ##__VA_ARGS__), 0)
+#define DbgPrintEx(cmpid, lvl, fmt, ...) (KdpDprintf(fmt, ##__VA_ARGS__), 0)
+
 /* UTILITY FUNCTIONS *********************************************************/

/*