tree: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git master head: dce4551cb2adb1ac9a30f8ab5299d614392b3cff commit: dce4551cb2adb1ac9a30f8ab5299d614392b3cff [16/16] udp: preserve head state for IP_CMSG_PASSSEC config: arm-at91_dt_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout dce4551cb2adb1ac9a30f8ab5299d614392b3cff # save the attached .config to linux build tree make.cross ARCH=arm
All errors (new ones prefixed by >>):
In file included from include/uapi/linux/stddef.h:1:0,
from include/linux/stddef.h:4,
from include/uapi/linux/posix_types.h:4,
from include/uapi/linux/types.h:13,
from include/linux/types.h:5,
from include/linux/thread_info.h:10,
from include/asm-generic/current.h:4,
from ./arch/arm/include/generated/asm/current.h:1,
from include/linux/sched.h:11,
from include/linux/uaccess.h:4,
from net//ipv4/udp.c:82:
net//ipv4/udp.c: In function '__udp_queue_rcv_skb':
>> net//ipv4/udp.c:1789:47: error: 'struct sk_buff' has no member named 'sp';
>> did you mean 'sk'?
if (likely(IPCB(skb)->opt.optlen == 0 && !skb->sp))
^
include/linux/compiler.h:174:40: note: in definition of macro 'likely'
# define likely(x) __builtin_expect(!!(x), 1)
^
vim +1789 net//ipv4/udp.c
1772
1773 static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
1774 {
1775 int rc;
1776
1777 if (inet_sk(sk)->inet_daddr) {
1778 sock_rps_save_rxhash(sk, skb);
1779 sk_mark_napi_id(sk, skb);
1780 sk_incoming_cpu_update(sk);
1781 } else {
1782 sk_mark_napi_id_once(sk, skb);
1783 }
1784
1785 /* At recvmsg() time we may access skb->dst or skb->sp
depending on
1786 * the IP options and the cmsg flags, elsewhere can we clear all
1787 * pending head states while they are hot in the cache
1788 */
> 1789 if (likely(IPCB(skb)->opt.optlen == 0 && !skb->sp))
1790 skb_release_head_state(skb);
1791
1792 rc = __udp_enqueue_schedule_skb(sk, skb);
1793 if (rc < 0) {
1794 int is_udplite = IS_UDPLITE(sk);
1795
1796 /* Note that an ENOMEM error is charged twice */
1797 if (rc == -ENOMEM)
1798 UDP_INC_STATS(sock_net(sk),
UDP_MIB_RCVBUFERRORS,
1799 is_udplite);
1800 UDP_INC_STATS(sock_net(sk), UDP_MIB_INERRORS,
is_udplite);
1801 kfree_skb(skb);
1802 trace_udp_fail_queue_rcv_skb(rc, sk);
1803 return -1;
1804 }
1805
1806 return 0;
1807 }
1808
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.config.gz
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