Hi Arnd, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d2f38a3c6507b2520101f9a3807ed98f1bdc545a commit: e31ac898ac298b7a0451b0406769a024bd286e4d scsi: libfc: Move scsi/fc_encode.h to libfc date: 1 year ago config: microblaze-randconfig-r023-20211109 (attached as .config) compiler: microblaze-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e31ac898ac298b7a0451b0406769a024bd286e4d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/scsi/libfc/fc_elsct.c:18: drivers/scsi/libfc/fc_encode.h: In function 'fc_ct_ns_fill': 153 | strncpy(ct->payload.snn.fr_name, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 154 | fc_host_symbolic_name(lport->host), len); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/libfc/fc_encode.h:143:17: warning: 'strncpy' output may be truncated copying between 0 and 255 bytes from a string of length 255 [-Wstringop-truncation] 143 | strncpy(ct->payload.spn.fr_name, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 144 | fc_host_symbolic_name(lport->host), len); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/strncpy +153 drivers/scsi/libfc/fc_encode.h 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 81 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 82 /** 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 83 * fc_ct_ns_fill() - Fill in a name service request frame 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 84 * @lport: local port. 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 85 * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries. 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 86 * @fp: frame to contain payload. 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 87 * @op: CT opcode. 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 88 * @r_ctl: pointer to FC header R_CTL. 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 89 * @fh_type: pointer to FC-4 type. 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 90 */ 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 91 static inline int fc_ct_ns_fill(struct fc_lport *lport, 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 92 u32 fc_id, struct fc_frame *fp, a46f327aa5caf2 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 93 unsigned int op, enum fc_rctl *r_ctl, 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 94 enum fc_fh_type *fh_type) 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 95 { 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 96 struct fc_ct_req *ct; 5f9a056db9c797 include/scsi/fc_encode.h Joe Eykholt 2009-11-03 97 size_t len; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 98 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 99 switch (op) { 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 100 case FC_NS_GPN_FT: 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 101 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft), 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 102 FC_FST_DIR, FC_NS_SUBTYPE); 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 103 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 104 break; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 105 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 106 case FC_NS_GPN_ID: 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 107 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid), 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 108 FC_FST_DIR, FC_NS_SUBTYPE); 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 109 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP; 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 110 hton24(ct->payload.fid.fp_fid, fc_id); 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 111 break; 2ab7e1ecb81ce3 include/scsi/fc_encode.h Joe Eykholt 2009-08-25 112 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 113 case FC_NS_RFT_ID: 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 114 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft), 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 115 FC_FST_DIR, FC_NS_SUBTYPE); 7b2787ec15b9d1 include/scsi/fc_encode.h Robert Love 2010-05-07 116 hton24(ct->payload.rft.fid.fp_fid, lport->port_id); 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 117 ct->payload.rft.fts = lport->fcts; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 118 break; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 119 ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 120 case FC_NS_RFF_ID: 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 121 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id), 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 122 FC_FST_DIR, FC_NS_SUBTYPE); 7b2787ec15b9d1 include/scsi/fc_encode.h Robert Love 2010-05-07 123 hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id); ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 124 ct->payload.rff.fr_type = FC_TYPE_FCP; ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 125 if (lport->service_params & FCP_SPPF_INIT_FCN) ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 126 ct->payload.rff.fr_feat = FCP_FEAT_INIT; ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 127 if (lport->service_params & FCP_SPPF_TARG_FCN) ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 128 ct->payload.rff.fr_feat |= FCP_FEAT_TARG; ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 129 break; ab593b187391bd include/scsi/fc_encode.h Joe Eykholt 2009-11-03 130 c9c7bd7a5e7321 include/scsi/fc_encode.h Chris Leech 2009-11-03 131 case FC_NS_RNN_ID: 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 132 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id), 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 133 FC_FST_DIR, FC_NS_SUBTYPE); 7b2787ec15b9d1 include/scsi/fc_encode.h Robert Love 2010-05-07 134 hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id); c9c7bd7a5e7321 include/scsi/fc_encode.h Chris Leech 2009-11-03 135 put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn); 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 136 break; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 137 c9866a548024c3 include/scsi/fc_encode.h Chris Leech 2009-11-03 138 case FC_NS_RSPN_ID: 5f9a056db9c797 include/scsi/fc_encode.h Joe Eykholt 2009-11-03 139 len = strnlen(fc_host_symbolic_name(lport->host), 255); 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 140 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len, 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 141 FC_FST_DIR, FC_NS_SUBTYPE); 7b2787ec15b9d1 include/scsi/fc_encode.h Robert Love 2010-05-07 142 hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id); c9866a548024c3 include/scsi/fc_encode.h Chris Leech 2009-11-03 143 strncpy(ct->payload.spn.fr_name, 5f9a056db9c797 include/scsi/fc_encode.h Joe Eykholt 2009-11-03 144 fc_host_symbolic_name(lport->host), len); 5f9a056db9c797 include/scsi/fc_encode.h Joe Eykholt 2009-11-03 145 ct->payload.spn.fr_name_len = len; c9866a548024c3 include/scsi/fc_encode.h Chris Leech 2009-11-03 146 break; c9866a548024c3 include/scsi/fc_encode.h Chris Leech 2009-11-03 147 5baa17c3e66fc2 include/scsi/fc_encode.h Chris Leech 2009-11-03 148 case FC_NS_RSNN_NN: 5f9a056db9c797 include/scsi/fc_encode.h Joe Eykholt 2009-11-03 149 len = strnlen(fc_host_symbolic_name(lport->host), 255); 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 150 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len, 1ea2c1daf4476a include/scsi/fc_encode.h Neerav Parikh 2012-01-22 151 FC_FST_DIR, FC_NS_SUBTYPE); 5baa17c3e66fc2 include/scsi/fc_encode.h Chris Leech 2009-11-03 152 put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn); 5baa17c3e66fc2 include/scsi/fc_encode.h Chris Leech 2009-11-03 @153 strncpy(ct->payload.snn.fr_name, 5f9a056db9c797 include/scsi/fc_encode.h Joe Eykholt 2009-11-03 154 fc_host_symbolic_name(lport->host), len); 5f9a056db9c797 include/scsi/fc_encode.h Joe Eykholt 2009-11-03 155 ct->payload.snn.fr_name_len = len; 5baa17c3e66fc2 include/scsi/fc_encode.h Chris Leech 2009-11-03 156 break; 5baa17c3e66fc2 include/scsi/fc_encode.h Chris Leech 2009-11-03 157 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 158 default: 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 159 return -EINVAL; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 160 } 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 161 *r_ctl = FC_RCTL_DD_UNSOL_CTL; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 162 *fh_type = FC_TYPE_CT; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 163 return 0; 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 164 } 42e9a92fe6a909 include/scsi/fc_encode.h Robert Love 2008-12-09 165 :::::: The code at line 153 was first introduced by commit :::::: 5baa17c3e66fc2e414f501b2dd59b962dfc64919 [SCSI] libfc: Register Symbolic Node Name (RSNN_NN) :::::: TO: Chris Leech <christopher.leech(a)intel.com&gt; :::::: CC: James Bottomley <James.Bottomley(a)suse.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org