diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-10-04 19:04:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-05 11:07:03 +0100 |
| commit | 829b4ae20855c52011e1288b5ca6e5c7f19272b0 (patch) | |
| tree | a38262ab0eaba494794eb0bd987f1b2f1995c8c1 /fs | |
| parent | e61ea3a7e85e14919d4893554b18d0c5263130ad (diff) | |
ceph: promote to unsigned long long before shifting
commit c403c3a2fbe24d4ed33e10cabad048583ebd4edf upstream.
On 32-bit systems, this shift will overflow for files larger than 4GB.
Cc: stable@vger.kernel.org
Fixes: 61f68816211e ("ceph: check caps in filemap_fault and page_mkwrite")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ceph/addr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 4d622654bfbc..ae1435c12d2b 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1443,7 +1443,7 @@ static int ceph_filemap_fault(struct vm_fault *vmf) struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_file_info *fi = vma->vm_file->private_data; struct page *pinned_page = NULL; - loff_t off = vmf->pgoff << PAGE_SHIFT; + loff_t off = (loff_t)vmf->pgoff << PAGE_SHIFT; int want, got, ret; sigset_t oldset; |