Patch "sh: sq: Fix incorrect element size for allocating bitmap buffer" has been added to the 6.2-stable tree

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

    sh: sq: Fix incorrect element size for allocating bitmap buffer

to the 6.2-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:
     sh-sq-fix-incorrect-element-size-for-allocating-bitm.patch
and it can be found in the queue-6.2 subdirectory.

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



commit 39a80bcec406b30ff76a3ece415b164e54baca6b
Author: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
Date:   Wed Apr 19 13:48:52 2023 +0200

    sh: sq: Fix incorrect element size for allocating bitmap buffer
    
    [ Upstream commit 80f746e2bd0e1da3fdb49a53570e54a1a225faac ]
    
    The Store Queue code allocates a bitmap buffer with the size of
    multiple of sizeof(long) in sq_api_init(). While the buffer size
    is calculated correctly, the code uses the wrong element size to
    allocate the buffer which results in the allocated bitmap buffer
    being too small.
    
    Fix this by allocating the buffer with kcalloc() with element size
    sizeof(long) instead of kzalloc() whose elements size defaults to
    sizeof(char).
    
    Fixes: d7c30c682a27 ("sh: Store Queue API rework.")
    Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
    Signed-off-by: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230419114854.528677-1-glaubitz@xxxxxxxxxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/sh/kernel/cpu/sh4/sq.c b/arch/sh/kernel/cpu/sh4/sq.c
index a76b94e41e913..8ddfe9989f5fc 100644
--- a/arch/sh/kernel/cpu/sh4/sq.c
+++ b/arch/sh/kernel/cpu/sh4/sq.c
@@ -382,7 +382,7 @@ static int __init sq_api_init(void)
 	if (unlikely(!sq_cache))
 		return ret;
 
-	sq_bitmap = kzalloc(size, GFP_KERNEL);
+	sq_bitmap = kcalloc(size, sizeof(long), GFP_KERNEL);
 	if (unlikely(!sq_bitmap))
 		goto out;
 



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