From: Jason Gunthorpe <jgg@nvidia.com>
To: Bernard Metzler <bmt@zurich.ibm.com>
Cc: linux-rdma@vger.kernel.org, leonro@nvidia.com, David.Laight@aculab.com
Subject: Re: [PATCH] RDMA/siw: Fix missing permission check in user buffer registration
Date: Fri, 16 Dec 2022 14:34:33 -0400 [thread overview]
Message-ID: <Y5y6OaG4+6kPt9O5@nvidia.com> (raw)
In-Reply-To: <20221216183209.21183-1-bmt@zurich.ibm.com>
On Fri, Dec 16, 2022 at 07:32:09PM +0100, Bernard Metzler wrote:
> User communication buffer registration lacks check of access
> rights for provided address range. Using pin_user_pages_fast()
> instead of pin_user_pages() during user page pinning implicitely
> introduces the necessary check. It furthermore tries to avoid
> grabbing the mmap_read_lock.
Huh? What access check?
Jason
next prev parent reply other threads:[~2022-12-16 18:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-16 18:32 [PATCH] RDMA/siw: Fix missing permission check in user buffer registration Bernard Metzler
2022-12-16 18:34 ` Jason Gunthorpe [this message]
2022-12-16 20:11 ` Bernard Metzler
2022-12-16 20:12 ` Jason Gunthorpe
2022-12-20 13:52 ` Bernard Metzler
2023-01-03 13:07 ` Jason Gunthorpe
2023-01-03 14:11 ` Bernard Metzler
2023-01-03 14:15 ` Jason Gunthorpe
2023-01-03 16:19 ` Bernard Metzler
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