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[IPV6]: Fix crash in ip6_del_rt

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ip6_null_entry doesn't have rt6i_table set, when trying to delete it the
kernel crashes dereferencing table->tb6_lock.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2006-08-06 22:22:47 -07:00 committed by David S. Miller
parent d7aba67f81
commit 6c813a7297
1 changed files with 3 additions and 0 deletions
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3
net/ipv6/route.c
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@ -1223,6 +1223,9 @@ int ip6_del_rt(struct rt6_info *rt, struct nlmsghdr *nlh, void *_rtattr, struct
int err;
struct fib6_table *table;
if (rt == &ip6_null_entry)
return -ENOENT;
table = rt->rt6i_table;
write_lock_bh(&table->tb6_lock);