Patch "ubi: correct the calculation of fastmap size" has been added to the 6.6-stable tree

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

    ubi: correct the calculation of fastmap size

to the 6.6-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:
     ubi-correct-the-calculation-of-fastmap-size.patch
and it can be found in the queue-6.6 subdirectory.

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



commit ae970e8876d4480bea9feab2ff5bef66afe850f6
Author: Zhang Yi <yi.zhang@xxxxxxxxxx>
Date:   Tue Feb 20 10:49:03 2024 +0800

    ubi: correct the calculation of fastmap size
    
    [ Upstream commit 7f174ae4f39e8475adcc09d26c5a43394689ad6c ]
    
    Now that the calculation of fastmap size in ubi_calc_fm_size() is
    incorrect since it miss each user volume's ubi_fm_eba structure and the
    Internal UBI volume info. Let's correct the calculation.
    
    Cc: stable@xxxxxxxxxxxxxxx
    Signed-off-by: Zhang Yi <yi.zhang@xxxxxxxxxx>
    Reviewed-by: Zhihao Cheng <chengzhihao1@xxxxxxxxxx>
    Signed-off-by: Richard Weinberger <richard@xxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
index 28c8151a0725d..2cdc29483aee0 100644
--- a/drivers/mtd/ubi/fastmap.c
+++ b/drivers/mtd/ubi/fastmap.c
@@ -85,9 +85,10 @@ size_t ubi_calc_fm_size(struct ubi_device *ubi)
 		sizeof(struct ubi_fm_scan_pool) +
 		sizeof(struct ubi_fm_scan_pool) +
 		(ubi->peb_count * sizeof(struct ubi_fm_ec)) +
-		(sizeof(struct ubi_fm_eba) +
-		(ubi->peb_count * sizeof(__be32))) +
-		sizeof(struct ubi_fm_volhdr) * UBI_MAX_VOLUMES;
+		((sizeof(struct ubi_fm_eba) +
+		  sizeof(struct ubi_fm_volhdr)) *
+		 (UBI_MAX_VOLUMES + UBI_INT_VOL_COUNT)) +
+		(ubi->peb_count * sizeof(__be32));
 	return roundup(size, ubi->leb_size);
 }
 




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