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netns: prevent usage of flowi with not initialized fl_net in routing

PATCH In review Denis V. Lunev 2 participants 2 messages Dec 4, 2007 1 message not in the archive

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Networking Network drivers IPv4/IPv6
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Denis V. Lunev

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#0 lore raw

PATCH 4/4 netns: prevent usage of flowi with not initialized fl_net in routing

Prevent usage of flowi with not initialized fl_net in routing. This is a temporary measure to simplify maintenance of the patchset.

Signed-off-by Denis V. Lunev <[email protected]>
---
 net/ipv4/route.c      |    1 +
 net/ipv6/fib6_rules.c |    1 +
 net/ipv6/ip6_fib.c    |    1 +
 3 files changed, 3 insertions(+), 0 deletions(-)
net/ipv4/route.c +1 -0
index 84a7f32..996fd9e 100644
@@ -2444,6 +2444,7 @@ int ip_route_output_flow(struct rtable **rp, struct flowi *flp, struct sock *sk,
 {
 	int err;
 
+	BUG_ON(flp->fl_net == NULL);
 	if ((err = __ip_route_output_key(rp, flp)) != 0)
 		return err;
net/ipv6/fib6_rules.c +1 -0
index 428c6b0..326ea69 100644
@@ -38,6 +38,7 @@ struct dst_entry *fib6_rule_lookup(struct flowi *fl, int flags,
 		.lookup_ptr = lookup,
 	};
 
+	BUG_ON(fl->fl_net == NULL);
 	fib_rules_lookup(&fib6_rules_ops, fl, flags, &arg);
 	if (arg.rule)
 		fib_rule_put(arg.rule);
net/ipv6/ip6_fib.c +1 -0
index 31b60a0..706cb72 100644
@@ -282,6 +282,7 @@ struct fib6_table *fib6_get_table(u32 id)
 struct dst_entry *fib6_rule_lookup(struct flowi *fl, int flags,
 				   pol_lookup_t lookup)
 {
+	BUG_ON(fl->fl_net == NULL);
 	return (struct dst_entry *) lookup(&fib6_main_tbl, fl, flags);
 }
Signature · 1 line
1.5.3.rc5

A message that is not in the archive (sent off-list or not yet received): [email protected]

#2 lore raw
Quoted 2 lines · Denis V. Lunev

Prevent usage of flowi with not initialized fl_net in routing. This is a temporary measure to simplify maintenance of the patchset.

Please use WARN_ON, its not nice to crash peoples machines in case you missed something.