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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-10-04 19:04:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-11-05 11:08:53 +0100 |
| commit | 4f3b78e25a073115c52b064c9f35e6a9aa39e566 (patch) | |
| tree | d8d1fb378abc7748487a5c6b1c53878400c8ff9f /fs/ceph | |
| parent | 0ac2a7bcff3717da75acec69fff4728a22bea383 (diff) | |
| download | linux-stable-4f3b78e25a073115c52b064c9f35e6a9aa39e566.tar.gz linux-stable-4f3b78e25a073115c52b064c9f35e6a9aa39e566.tar.bz2 linux-stable-4f3b78e25a073115c52b064c9f35e6a9aa39e566.zip | |
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/ceph')
| -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 476728bdae8c..e59b2f53a81f 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1437,7 +1437,7 @@ static vm_fault_t 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, err; sigset_t oldset; vm_fault_t ret = VM_FAULT_SIGBUS; |