Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X

From	Vlad Zolotarov <vladz@cloudius-systems.com>
Newsgroups	linux.kernel
Subject	Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X
Date	2015-10-06 18:50 +0200
Message-ID	<qgDBa-3mf-49@gated-at.bofh.it> (permalink)
References	(5 earlier) <qgmJY-4k3-19@gated-at.bofh.it> <qgvNg-Gu-13@gated-at.bofh.it> <qgAWD-7WB-23@gated-at.bofh.it> <qgBJ0-Em-41@gated-at.bofh.it> <qgC2l-1gz-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 10/06/15 18:00, Michael S. Tsirkin wrote:
> On Tue, Oct 06, 2015 at 05:49:21PM +0300, Vlad Zolotarov wrote:
>>> and read/write the config space.
>>> This means that a single userspace bug is enough to corrupt kernel
>>> memory.
>> Could u, pls., provide and example of this simple bug? Because it's
>> absolutely not obvious...
> Stick a value that happens to match a kernel address in Msg Addr field
> in an unmasked MSI-X entry.

This patch neither configures MSI-X entries in the user space nor 
provides additional means to do so therefore this "sticking" would be a 
matter of some extra code that is absolutely unrelated to this patch. 
So, this example seems absolutely irrelevant to this particular discussion.

thanks,
vlad

>

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Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-06 00:50 +0200
  Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Stephen Hemminger <stephen@networkplumber.org> - 2015-10-06 09:40 +0200
    Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Avi Kivity <avi@scylladb.com> - 2015-10-06 14:20 +0200
      Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-06 16:10 +0200
        Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Avi Kivity <avi@scylladb.com> - 2015-10-06 17:50 +0200
      Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Thomas Monjalon <thomas.monjalon@6wind.com> - 2015-10-16 19:20 +0200
        Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Stephen Hemminger <stephen@networkplumber.org> - 2015-10-16 19:30 +0200
    Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-06 15:50 +0200
  Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Vlad Zolotarov <vladz@cloudius-systems.com> - 2015-10-06 10:30 +0200
    Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-06 16:00 +0200
      Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Vlad Zolotarov <vladz@cloudius-systems.com> - 2015-10-06 16:50 +0200
        Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X "Michael S. Tsirkin" <mst@redhat.com> - 2015-10-06 17:10 +0200
          Re: [dpdk-dev] [PATCH 2/2] uio: new driver to support PCI MSI-X Vlad Zolotarov <vladz@cloudius-systems.com> - 2015-10-06 18:50 +0200

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