Hi All,
I got a crash with vpp v17.07.01 on ARMv8 Soc
@src/vnet/devices/virtio/vhost-user.c: Line no: 1852
if (clib_smp_swap (&dq->interrupt_pending, 0) ||
(node->state == VLIB_NODE_STATE_POLLING)){
}
While debugging it turns out that value of (&dq->interrupt_pending) was not 8
byte aligned hence causing SIGBUS error on ARMv8 SoC. Further debugging tells
that dq was added in vector using vec_add2 (src/vnet/devices/devices.c Line no:
152)
vec_add2 (rt->devices_and_queues, dq, 1)
which uses 0 byte alignment. Changing vec_add2 to vec_add2_aligned() fixed the
problem. My question is can we completely define vec_add2() as
#define vec_add2(V,P,N) vec_add2_ha(V,P,N,0,8) instead of #define
vec_add2(V,P,N) vec_add2_ha(V,P,N,0,0)
This can be helpful for all architecture.
Thanks,
Nitin
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