[dpdk-dev] [PATCH 3/3] net/virtio: fix crash when number of virtio devices > 1

Maxime Coquelin maxime.coquelin at redhat.com
Mon Jan 23 08:58:03 CET 2017

On 01/22/2017 09:47 AM, Yuanhan Liu wrote:
> The vtpci_ops assignment needs the 'hw->port_id' as an input parameter.
> That said, we should set 'hw->port_id' firstly, then do the vtpci_ops
> assignment, while the code does reversely. That would result to a crash
> when more than one virtio devices are used, because we keep assigning
> proper vtpci_ops to virtio_hw_internal[0]->vtpci_ops, leaving the pointer
> for other ports being NULL.
> Reverse the order fixes this issue.
> Fixes: 9470427c88e1 ("net/virtio: do not store PCI device pointer at shared memory")
> Cc: stable at dpdk.org
> Reported-by: Lei Yao <lei.a.yao at intel.com>
> Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
> ---
>  drivers/net/virtio/virtio_ethdev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>


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