Hi Alex, This error happens at the very beginning of the branch, so the bug should be introduced somewhere earlier. tree: git://github.com/ceph/ceph-client.git testing-rebased-v3.5 head: d76f7de2432bda5c8642be0a714a1dc737a9f555 commit: 0f57c5764bef8d5424655bcfdf07d2b851a63039 [0/99] config: i386-randconfig-k001 (attached as .config) Build errors: net/ceph/messenger.c: In function 'process_connect': net/ceph/messenger.c:1452:3: error: implicit declaration of function 'ceph_con_out_kvec_reset' [-Werror=implicit-function-declaration] --- 0-DAY kernel build testing backend Open Source Technology Centre Fengguang Wu Intel Corporation