Re: [PATCH v6 1/4] sgl_alloc_order: remove 4 GiB limit, sgl_free() warning
From: Jason Gunthorpe <jgg@ziepe.ca>
Date: 2021-01-19 13:11:24
Also in:
linux-block, linux-rdma, lkml, target-devel
On Mon, Jan 18, 2021 at 08:27:09PM -0500, Douglas Gilbert wrote:
To protect against the "unsigned long long" length being too big why
not pick a large power of two and if someone can justify a larger
value, they can send a patch.
if (length > 64ULL * 1024 * 1024 * 1024)
return NULL;That is not how we protect against arithemetic overflows in the kernel Jason