Hi Willem, [auto build test ERROR on net-next/master] url: https://github.com/0day-ci/linux/commits/Willem-de-Bruijn/sock-allocate-skbs-from-optmem/20170619-072924 config: i386-randconfig-a0-06162344 (attached as .config) compiler: gcc-5 (Debian 5.4.1-2) 5.4.1 20160904 reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: the linux-review/Willem-de-Bruijn/sock-allocate-skbs-from-optmem/20170619-072924 HEAD 967736700e28113ea867e0f2358aca7dcced7407 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): net//core/skbuff.c: In function 'skb_copy_ubufs': >> net//core/skbuff.c:1016:2: error: 'uarg' undeclared (first use in this function) uarg->callback(uarg, false); ^ net//core/skbuff.c:1016:2: note: each undeclared identifier is reported only once for each function it appears in vim +/uarg +1016 net//core/skbuff.c 396206af Willem de Bruijn 2017-06-18 1000 d_off = 0; 396206af Willem de Bruijn 2017-06-18 1001 page = (struct page *)page_private(page); 396206af Willem de Bruijn 2017-06-18 1002 } 396206af Willem de Bruijn 2017-06-18 1003 copy = min_t(u32, PAGE_SIZE - d_off, f_size); 396206af Willem de Bruijn 2017-06-18 1004 memcpy(page_address(page) + d_off, vaddr + f_off, copy); 396206af Willem de Bruijn 2017-06-18 1005 f_size -= copy; 396206af Willem de Bruijn 2017-06-18 1006 d_off += copy; 396206af Willem de Bruijn 2017-06-18 1007 f_off += copy; 396206af Willem de Bruijn 2017-06-18 1008 } 396206af Willem de Bruijn 2017-06-18 1009 kunmap_atomic(vaddr); 396206af Willem de Bruijn 2017-06-18 1010 } 396206af Willem de Bruijn 2017-06-18 1011 a6686f2f Shirley Ma 2011-07-06 1012 /* skb frags release userspace buffers */ 02756ed4 Krishna Kumar 2012-07-17 1013 for (i = 0; i < num_frags; i++) a8605c60 Ian Campbell 2011-10-19 1014 skb_frag_unref(skb, i); a6686f2f Shirley Ma 2011-07-06 1015 e19d6763 Michael S. Tsirkin 2012-11-01 @1016 uarg->callback(uarg, false); a6686f2f Shirley Ma 2011-07-06 1017 a6686f2f Shirley Ma 2011-07-06 1018 /* skb frags point to kernel buffers */ 396206af Willem de Bruijn 2017-06-18 1019 for (i = 0; i < new_frags - 1; i++) { 396206af Willem de Bruijn 2017-06-18 1020 __skb_fill_page_desc(skb, i, head, 0, PAGE_SIZE); 40dadff2 Sunghan Suh 2013-07-12 1021 head = (struct page *)page_private(head); a6686f2f Shirley Ma 2011-07-06 1022 } 396206af Willem de Bruijn 2017-06-18 1023 __skb_fill_page_desc(skb, new_frags - 1, head, 0, d_off); 396206af Willem de Bruijn 2017-06-18 1024 skb_shinfo(skb)->nr_frags = new_frags; :::::: The code at line 1016 was first introduced by commit :::::: e19d6763cc300fcb706bd291b24ac06be71e1ce6 skb: report completion status for zero copy skbs :::::: TO: Michael S. Tsirkin <mst@xxxxxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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