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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: 61f6881621
("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>
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@ -1427,7 +1427,7 @@ static vm_fault_t ceph_filemap_fault(struct vm_fault *vmf)
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struct ceph_inode_info *ci = ceph_inode(inode);
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struct ceph_inode_info *ci = ceph_inode(inode);
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struct ceph_file_info *fi = vma->vm_file->private_data;
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struct ceph_file_info *fi = vma->vm_file->private_data;
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struct page *pinned_page = NULL;
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struct page *pinned_page = NULL;
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loff_t off = vmf->pgoff << PAGE_SHIFT;
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loff_t off = (loff_t)vmf->pgoff << PAGE_SHIFT;
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int want, got, err;
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int want, got, err;
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sigset_t oldset;
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sigset_t oldset;
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vm_fault_t ret = VM_FAULT_SIGBUS;
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vm_fault_t ret = VM_FAULT_SIGBUS;
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