From 0c336d6e33f4bedc443404c89f43c91c8bd9ee11 Mon Sep 17 00:00:00 2001

From: Sungjong Seo <sj1557.seo@samsung.com>

Date: Tue, 19 Oct 2021 15:14:21 +0900

Subject: [Backport 0c336d6e33f4] exfat: fix incorrect loading of i_blocks for

 large files

When calculating i_blocks, there was a mistake that was masked with a

32-bit variable. So i_blocks for files larger than 4 GiB had incorrect

values. Mask with a 64-bit variable instead of 32-bit one.

Fixes: 5f2aa075070c ("exfat: add inode operations")

Cc: stable@vger.kernel.org # v5.7+

Reported-by: Ganapathi Kamath <hgkamath@hotmail.com>

Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com>

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

---

 src/inode.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/inode.c b/src/inode.c

index ca37d43443612c61200b07b69e40993ea0eff8d2..1c7aa1ea4724cf03e49daef0e730dc620200088f 100644

--- a/src/inode.c

+++ b/src/inode.c

@@ -604,7 +604,7 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)

 	exfat_save_attr(inode, info->attr);

 	inode->i_blocks = ((i_size_read(inode) + (sbi->cluster_size - 1)) &

-		~(sbi->cluster_size - 1)) >> inode->i_blkbits;

+		~((loff_t)sbi->cluster_size - 1)) >> inode->i_blkbits;

 	inode->i_mtime = info->mtime;

 	inode->i_ctime = info->mtime;

 	ei->i_crtime = info->crtime;

-- 

2.31.1