From: Stephen Hemminger <stephen@networkplumber.org>
To: longli@linuxonhyperv.com
Cc: Stephen Hemminger <sthemmin@microsoft.com>,
dev@dpdk.org, Long Li <longli@microsoft.com>
Subject: Re: [dpdk-dev] [PATCH] bus/vmbus: calcuate the correct start address for mapping ring buffer
Date: Fri, 12 Jun 2020 09:06:33 -0700 [thread overview]
Message-ID: <20200612090633.1a3d90a7@hermes.lan> (raw)
In-Reply-To: <1591922905-81259-1-git-send-email-longli@linuxonhyperv.com>
On Thu, 11 Jun 2020 17:48:25 -0700
longli@linuxonhyperv.com wrote:
> From: Long Li <longli@microsoft.com>
>
> vmbus_map_addr is used as the next start virutal address for mapping ring
> buffer. However it's updated based on ring_buf, which is a pointer to an
> address on the stack. The next ring buffer may be mapped to an unexpected
> address.
>
> Fix this by calculating vmbus_map_addr based on returned virtual address.
>
> Signed-off-by: Long Li <longli@microsoft.com>
Fixes: 3f9277031a2e ("bus/vmbus: fix check for mmap failure")
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
next prev parent reply other threads:[~2020-06-12 16:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-12 0:48 longli
2020-06-12 16:06 ` Stephen Hemminger [this message]
2020-06-24 23:05 ` Thomas Monjalon
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