+ mm-page_poison-use-unhashed-address-in-hexdump-for-check_poison_mem.patch added to -mm tree

+ mm-page_poison-use-unhashed-address-in-hexdump-for-check_poison_mem.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/page_poison: use unhashed address in hexdump for check_poison_mem()
has been added to the -mm tree.  Its filename is
     mm-page_poison-use-unhashed-address-in-hexdump-for-check_poison_mem.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-page_poison-use-unhashed-address-in-hexdump-for-check_poison_mem.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-page_poison-use-unhashed-address-in-hexdump-for-check_poison_mem.patch

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------------------------------------------------------
From: Timur Tabi <timur@kernel.org>
Subject: mm/page_poison: use unhashed address in hexdump for check_poison_mem()

Now that print_hex_dump() is capable of printing unhashed addresses, use
that feature in the code that reports memory errors.  Hashed addresses
don't tell you where the corrupted page actually is.

Link: https://lkml.kernel.org/r/20210116220950.47078-3-timur@kernel.org
Signed-off-by: Timur Tabi <timur@kernel.org>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Roman Fietze <roman.fietze@magna.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_poison.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/page_poison.c~mm-page_poison-use-unhashed-address-in-hexdump-for-check_poison_mem
+++ a/mm/page_poison.c
@@ -67,7 +67,7 @@ static void check_poison_mem(unsigned ch
 	else
 		pr_err("pagealloc: memory corruption\n");
 
-	print_hex_dump(KERN_ERR, "", DUMP_PREFIX_ADDRESS, 16, 1, start,
+	print_hex_dump(KERN_ERR, "", DUMP_PREFIX_UNHASHED, 16, 1, start,
 			end - start + 1, 1);
 	dump_stack();
 }
_

Patches currently in -mm which might be from timur@kernel.org are

lib-hexdump-introduce-dump_prefix_unhashed-for-unhashed-addresses.patch
mm-page_poison-use-unhashed-address-in-hexdump-for-check_poison_mem.patch