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bgpd: fix bug while iterating over VPN table

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The routing table data structure can create intermediate route nodes
during its normal operation, so we always need to check if the 'info'
pointer of a route node is NULL or not before dereferencing it.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
This commit is contained in:
Renato Westphal 2018-10-19 15:55:12 -03:00
parent 68badf70b1
commit 2eab13249c
1 changed files with 2 additions and 0 deletions
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bgpd/rfapi/vnc_zebra.c
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@ -313,6 +313,8 @@ static void vnc_redistribute_withdraw(struct bgp *bgp, afi_t afi, uint8_t type)
/* This is the per-RD table of prefixes */
table = prn->info;
if (!table)
continue;
for (rn = bgp_table_top(table); rn; rn = bgp_route_next(rn)) {