linux-kernel - [PATCH] arm: Show real address of stack limit in _

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Message-ID: <20211202061916.204718-1-heying24@huawei.com>
Date:   Thu, 2 Dec 2021 01:19:16 -0500
From:   He Ying <heying24@...wei.com>
To:     <rmk+kernel@...linux.org.uk>, <arnd@...db.de>, <ardb@...nel.org>,
        <akpm@...ux-foundation.org>, <maninder1.s@...sung.com>,
        <wangkefeng.wang@...wei.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] arm: Show real address of stack limit in __die()

Printing real address of stack limit makes debug easier.
And system is dying, there is no security risk to show real
address.

Signed-off-by: He Ying <heying24@...wei.com>
---
 arch/arm/kernel/traps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 195dff58bafc..7d7c86d00482 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -273,7 +273,7 @@ static int __die(const char *str, int err, struct pt_regs *regs)
 	print_modules();
 	__show_regs(regs);
 	__show_regs_alloc_free(regs);
-	pr_emerg("Process %.*s (pid: %d, stack limit = 0x%p)\n",
+	pr_emerg("Process %.*s (pid: %d, stack limit = 0x%px)\n",
 		 TASK_COMM_LEN, tsk->comm, task_pid_nr(tsk), end_of_stack(tsk));
 
 	if (!user_mode(regs) || in_interrupt()) {
-- 
2.17.1