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From: "Clément Léger" <clement.leger@bootlin.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
	"Clément Léger" <clement.leger@bootlin.com>
Subject: [PATCH] mm/kmemleak: use %pK to display kernel pointers in backtrace
Date: Tue,  8 Nov 2022 10:43:22 +0100	[thread overview]
Message-ID: <20221108094322.73492-1-clement.leger@bootlin.com> (raw)

Currently, %p is used to display kernel pointers in backtrace which result
in a hashed value that is not usable to correlate the address for debug.
Use %pK which will respect the kptr_restrict configuration value and thus
allow to extract meaningful information from the backtrace.

Signed-off-by: Clément Léger <clement.leger@bootlin.com>
---
 mm/kmemleak.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 646e2979641f..b16be8891ae3 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -358,7 +358,7 @@ static void print_unreferenced(struct seq_file *seq,
 
 	for (i = 0; i < object->trace_len; i++) {
 		void *ptr = (void *)object->trace[i];
-		warn_or_seq_printf(seq, "    [<%p>] %pS\n", ptr, ptr);
+		warn_or_seq_printf(seq, "    [<%pK>] %pS\n", ptr, ptr);
 	}
 }
 
-- 
2.38.1



                 reply	other threads:[~2022-11-08  9:42 UTC|newest]

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