linux-kernel - [PATCH] print_hex_dump: use %px when using DUMP_PREFIX

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Date:   Wed, 24 Jun 2020 14:15:24 +0200
From:   Roman Fietze <roman.fietze@...na.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
CC:     <linux-kernel@...r.kernel.org>
Subject: [PATCH] print_hex_dump: use %px when using DUMP_PREFIX_ADDRESS

This function is mainly used for debugging. But for that purpose the
hashed memory address of the dumped data provides no useful
information at all.

Note: There are only very few locations in the kernel, where
print_hex_dump is not used with KERN_DEBUG and DUMP_PREFIX_ADDRESS.

Signed-off-by: Roman Fietze <roman.fietze@...na.com>
---
 lib/hexdump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/hexdump.c b/lib/hexdump.c
index 147133f8eb2f..52dd2fc1c8b4 100644
--- a/lib/hexdump.c
+++ b/lib/hexdump.c
@@ -256,7 +256,7 @@ void print_hex_dump(const char *level, const char 
*prefix_str, int prefix_type,
 
                switch (prefix_type) {
                case DUMP_PREFIX_ADDRESS:
-                       printk("%s%s%p: %s\n",
+                       printk("%s%s%px: %s\n",
                               level, prefix_str, ptr + i, linebuf);
                        break;
                case DUMP_PREFIX_OFFSET:
-- 
2.26.2


-- 

Roman Fietze
Entwicklungsingenieur
MAGNA Telemotive GmbH
Breitwiesen
73347 Mühlhausen
Tel.: +49 7335 18493-45