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authorLi Wei <lw@cn.fujitsu.com>2012-03-07 14:58:07 +0000
committerDavid S. Miller <davem@davemloft.net>2012-03-11 15:57:11 -0700
commit8b2aaedee4eaa94e816144ed54b9707b96be29f8 (patch)
tree0fd46f2b7fdfd5aacda2c35470048dfe2fb00dab /net/ipv4/tunnel4.c
parentMAINTAINERS: add an entry for the PHC code (diff)
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ipv6: Fix Smatch warning.
With commit d6ddef9e641d(IPv6: Fix not join all-router mcast group when forwarding set.) I check 'dev' after it's dereference that leads to a Smatch complaint: net/ipv6/addrconf.c:438 ipv6_add_dev() warn: variable dereferenced before check 'dev' (see line 432) net/ipv6/addrconf.c 431 /* protected by rtnl_lock */ 432 rcu_assign_pointer(dev->ip6_ptr, ndev); ^^^^^^^^^^^^ Old dereference. 433 434 /* Join all-node multicast group */ 435 ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes); 436 437 /* Join all-router multicast group if forwarding is set */ 438 if (ndev->cnf.forwarding && dev && (dev->flags & IFF_MULTICAST)) ^^^ Remove the check to avoid the complaint as 'dev' can't be NULL. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Li Wei <lw@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tunnel4.c')
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