[PATCH 6.1 376/473] fs/ntfs3: Use 64 bit variable to avoid 32 bit overflow

Greg Kroah-Hartman
2024-06-06T14:18:37Z

From: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

[ Upstream commit e931f6b630ffb22d66caab202a52aa8cbb10c649 ]

For example, in the expression:
vbo = 2 * vbo + skip

Fixes: b46acd6a6a627 ("fs/ntfs3: Add NTFS journal")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/ntfs3/fslog.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
index d53ef128fa733..a2d5b2a94d854 100644
--- a/fs/ntfs3/fslog.c
+++ b/fs/ntfs3/fslog.c
@@ -1181,7 +1181,8 @@ static int read_log_page(struct ntfs_log *log, u32 vbo,
static int log_read_rst(struct ntfs_log *log, u32 l_size, bool first,
struct restart_info *info)
{
- u32 skip, vbo;
+ u32 skip;
+ u64 vbo;
struct RESTART_HDR *r_page = NULL;

/* Determine which restart area we are looking for. */
--
2.43.0