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Re: [Qemu-devel] [PATCH] 9pfs: don't BUG_ON() if fid is already opened
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From: |
Eric Blake |
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Subject: |
Re: [Qemu-devel] [PATCH] 9pfs: don't BUG_ON() if fid is already opened |
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Date: |
Thu, 27 Oct 2016 09:39:29 -0500 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
On 10/27/2016 03:44 AM, Greg Kurz wrote:
> A buggy or malicious guest could pass the id of an already opened fid and
> cause QEMU to abort. Let's return EINVAL to the guest instead.
>
> Signed-off-by: Greg Kurz <address@hidden>
> ---
> hw/9pfs/9p.c | 20 ++++++++++++++++----
> 1 file changed, 16 insertions(+), 4 deletions(-)
Reviewed-by: Eric Blake <address@hidden>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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