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tikhomirov
2018 Dec 15
1
[PATCH] vhost: return EINVAL if iovecs size does not match the message size
From: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
Date: Thu, 13 Dec 2018 17:53:50 +0300
> We've failed to copy and process vhost_iotlb_msg so let userspace at
> least know about it. For instance before these patch the code below runs
> without any error:
...
> Signed-off-by: Pavel Tikhomirov <ptikhomirov a...
2018 Dec 13
0
[PATCH] vhost: return EINVAL if iovecs size does not match the message size
...uot;);
> return 1;
> }
>
> iov.iov_base = &msg;
> iov.iov_len = sizeof(msg)-4;
>
> if (writev(fd, &iov,1) == -1) {
> perror("writev");
> return 1;
> }
>
> return 0;
> }
>
> Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
Thanks for the patch!
> ---
> drivers/vhost/vhost.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
> index 3a5f81a66d34..03014224ef13 100644
> --- a/drivers/vhost/vhost.c
&g...