Re: [PATCH] hugetlbfs: avoid overflow in hugetlbfs_fallocate
From: Matthew Wilcox <willy@infradead.org>
Date: 2021-11-24 04:24:37
Also in:
linux-fsdevel
On Wed, Nov 24, 2021 at 12:08:18PM +0800, yangerkun wrote:
start = offset >> hpage_shift; - end = (offset + len + hpage_size - 1) >> hpage_shift; + end = ((unsigned long long)offset + len + hpage_size - 1) + >> hpage_shift;
+ end = DIV_ROUND_UP_ULL(offset + len, hpage_size);