[PATCH 5.10 016/575] exfat: fix incorrect loading of i_blocks for large files
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-11-15 18:39:54
Also in:
lkml
From: Sungjong Seo <sj1557.seo@samsung.com>
commit 0c336d6e33f4bedc443404c89f43c91c8bd9ee11 upstream.
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 <redacted>
Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/exfat/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/exfat/inode.c
+++ b/fs/exfat/inode.c@@ -602,7 +602,7 @@ static int exfat_fill_inode(struct inode 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;