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Date: Tue, 26 May 2015 05:35:46 +0800
From: kbuild test robot <fengguang.wu@...el.com>
To: Martin KaFai Lau <kafai@...com>
Cc: kbuild-all@...org, netdev@...r.kernel.org
Subject: [net-next:master 741/754] net/ipv6/ip6_output.c:587:17: sparse:
incorrect type in assignment (different base types)
tree: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head: 376cd36dc7b68ec7f7de1428fa055ce706a33bbf
commit: 286c2349f6665c3e67f464a5faa14a0e28be4842 [741/754] ipv6: Clean up ipv6_select_ident() and ip6_fragment()
reproduce:
# apt-get install sparse
git checkout 286c2349f6665c3e67f464a5faa14a0e28be4842
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> net/ipv6/ip6_output.c:587:17: sparse: incorrect type in assignment (different base types)
net/ipv6/ip6_output.c:587:17: expected restricted __be32 [usertype] frag_id
net/ipv6/ip6_output.c:587:17: got unsigned int
>> net/ipv6/ip6_output.c:1105:38: sparse: incorrect type in assignment (different base types)
net/ipv6/ip6_output.c:1105:38: expected restricted __be32 [usertype] ip6_frag_id
net/ipv6/ip6_output.c:1105:38: got unsigned int
--
>> net/ipv6/output_core.c:72:16: sparse: incorrect type in return expression (different base types)
net/ipv6/output_core.c:72:16: expected unsigned int
net/ipv6/output_core.c:72:16: got restricted __be32 [usertype] <noident>
vim +587 net/ipv6/ip6_output.c
571 sk_nocaps_add(skb->sk, NETIF_F_GSO_MASK);
572
573 skb->dev = skb_dst(skb)->dev;
574 icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);
575 IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
576 IPSTATS_MIB_FRAGFAILS);
577 kfree_skb(skb);
578 return -EMSGSIZE;
579 }
580
581 if (np && np->frag_size < mtu) {
582 if (np->frag_size)
583 mtu = np->frag_size;
584 }
585 mtu -= hlen + sizeof(struct frag_hdr);
586
> 587 frag_id = ipv6_select_ident(net, rt);
588
589 if (skb_has_frag_list(skb)) {
590 int first_len = skb_pagelen(skb);
591 struct sk_buff *frag2;
592
593 if (first_len - hlen > mtu ||
594 ((first_len - hlen) & 7) ||
595 skb_cloned(skb))
---
0-DAY kernel test infrastructure Open Source Technology Center
http://lists.01.org/mailman/listinfo/kbuild Intel Corporation
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