[PATCH 6.18 689/752] LoongArch: Use %px to print unmodified unwinding address

Sasha Levin
2026-02-28T17:58:24Z

From: Tiezhu Yang <yangtiezhu@loongson.cn>

[ Upstream commit 77403a06d845db1caf9a6b0867b43e9dd8de8e4a ]

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
unwinding address.

Cc: stable@vger.kernel.org
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 0d5fa64a22252..e410048489c66 100644
--- a/arch/loongarch/kernel/unwind_orc.c
+++ b/arch/loongarch/kernel/unwind_orc.c
@@ -508,7 +508,7 @@ 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;
}

--
2.51.0