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zebra: Fix dest dereference
The rn can not have an rn->info pointer and as such the dest may be NULL. Don't assign the old_fib pointer if so. This is ok because we know RNODE_FOREACH... will not iterate if dest is NULL. Fixes: #1575 Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
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@ -1471,7 +1471,14 @@ static void rib_process(struct route_node *rn)
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if (IS_ZEBRA_DEBUG_RIB_DETAILED)
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zlog_debug("%u:%s: Processing rn %p", vrf_id, buf, rn);
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old_fib = dest->selected_fib;
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/*
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* we can have rn's that have a NULL info pointer
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* (dest). As such let's not let the deref happen
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* additionally we know RNODE_FOREACH_RE_SAFE
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* will not iterate so we are ok.
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*/
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if (dest)
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old_fib = dest->selected_fib;
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RNODE_FOREACH_RE_SAFE (rn, re, next) {
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if (IS_ZEBRA_DEBUG_RIB_DETAILED)
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