Patch "dm flakey: fix a bug with 32-bit highmem systems" has been added to the 5.10-stable tree

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This is a note to let you know that I've just added the patch titled

    dm flakey: fix a bug with 32-bit highmem systems

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     dm-flakey-fix-a-bug-with-32-bit-highmem-systems.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 8eb29c4fbf9661e6bd4dd86197a37ffe0ecc9d50 Mon Sep 17 00:00:00 2001
From: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Date: Sun, 22 Jan 2023 14:03:31 -0500
Subject: dm flakey: fix a bug with 32-bit highmem systems

From: Mikulas Patocka <mpatocka@xxxxxxxxxx>

commit 8eb29c4fbf9661e6bd4dd86197a37ffe0ecc9d50 upstream.

The function page_address does not work with 32-bit systems with high
memory. Use bvec_kmap_local/kunmap_local instead.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
Reviewed-by: Sweet Tea Dorminy <sweettea-kernel@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/md/dm-flakey.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -305,8 +305,9 @@ static void corrupt_bio_data(struct bio
 			struct page *page = bio_iter_page(bio, iter);
 			if (unlikely(page == ZERO_PAGE(0)))
 				break;
-			segment = (page_address(page) + bio_iter_offset(bio, iter));
+			segment = bvec_kmap_local(&bvec);
 			segment[corrupt_bio_byte] = fc->corrupt_bio_value;
+			kunmap_local(segment);
 			DMDEBUG("Corrupting data bio=%p by writing %u to byte %u "
 				"(rw=%c bi_opf=%u bi_sector=%llu size=%u)\n",
 				bio, fc->corrupt_bio_value, fc->corrupt_bio_byte,


Patches currently in stable-queue which might be from mpatocka@xxxxxxxxxx are

queue-5.10/dm-flakey-don-t-corrupt-the-zero-page.patch
queue-5.10/dm-flakey-fix-logic-when-corrupting-a-bio.patch
queue-5.10/dm-flakey-fix-a-bug-with-32-bit-highmem-systems.patch



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