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vhost: check allocation of guest pages

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When we try to allocate guest pages we need to check the return value of
malloc(). Print an error message and return when it fails.

Signed-off-by: Jens Freimann <jfreiman@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
This commit is contained in:
Jens Freimann 2017-05-11 17:25:26 +02:00 committed by Yuanhan Liu
parent fe404930f6
commit 4cee38a6fc
1 changed files with 7 additions and 0 deletions
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7
lib/librte_vhost/vhost_user.c
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@ -515,6 +515,13 @@ vhost_user_set_mem_table(struct virtio_net *dev, struct VhostUserMsg *pmsg)
dev->max_guest_pages = 8;
dev->guest_pages = malloc(dev->max_guest_pages *
sizeof(struct guest_page));
if (dev->guest_pages == NULL) {
RTE_LOG(ERR, VHOST_CONFIG,
"(%d) failed to allocate memory "
"for dev->guest_pages\n",
dev->vid);
return -1;
}
}
dev->mem = rte_zmalloc("vhost-mem-table", sizeof(struct rte_vhost_memory) +