fs/ntfs3: Don't clear upper bits accidentally in log_replay()

commit 926034353d3c67db1ffeab47dcb7f6bdac02a263 upstream.

The "vcn" variable is a 64 bit.  The "log->clst_per_page" variable is a
u32.  This means that the mask accidentally clears out the high 32 bits
when it was only supposed to clear some low bits.  Fix this by adding a
cast to u64.

Fixes: b46acd6a6a62 ("fs/ntfs3: Add NTFS journal")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
index 49b7df6167785d44d811151d84283b16ba744188..614513460b8e0f203ff146a68e644f36916a0232 100644 (file)
--- a/fs/ntfs3/fslog.c
+++ b/fs/ntfs3/fslog.c
@@ -5057,7 +5057,7 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
                goto add_allocated_vcns;
 
        vcn = le64_to_cpu(lrh->target_vcn);
-       vcn &= ~(log->clst_per_page - 1);
+       vcn &= ~(u64)(log->clst_per_page - 1);
 
 add_allocated_vcns:
        for (i = 0, vcn = le64_to_cpu(lrh->target_vcn),