linux-kernel - [PATCH v1 1/4] LoongArch: Use %px to print address in unwind_next

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Message-ID: <20260120092331.813-2-yangtiezhu@loongson.cn>
Date: Tue, 20 Jan 2026 17:23:28 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/4] LoongArch: Use %px to print address in unwind_next_frame()

Currently, use %p to prevent leaking information about the kernel memory
layout when printing the pc address, but the kernel log messages are not
useful to debug problem if bt_address() returns 0. Given that the type of
"pc" variable is unsigned long, it should use %px to print the unmodified
address.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/loongarch/kernel/unwind_orc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/loongarch/kernel/unwind_orc.c b/arch/loongarch/kernel/unwind_orc.c
index 8a6e3429a860..d6b3688a1ce9 100644
--- a/arch/loongarch/kernel/unwind_orc.c
+++ b/arch/loongarch/kernel/unwind_orc.c
@@ -494,7 +494,7 @@ bool unwind_next_frame(struct unwind_state *state)
 
 	state->pc = bt_address(pc);
 	if (!state->pc) {
-		pr_err("cannot find unwind pc at %p\n", (void *)pc);
+		pr_err("cannot find unwind pc at %px\n", (void *)pc);
 		goto err;
 	}
 
-- 
2.42.0