tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 9004fd387338b1104499b2c52ef5729a32c408f0 commit: 4b5a3ab17c6c942bd428984b6b37fe3c07f18ab3 [2550/2970] octeontx2-af: Hardware configuration for inline IPsec config: arm64-buildonly-randconfig-r001-20210916 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c8b3d7d6d6de37af68b2f379d0e37304f78e115f) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=4b5a3ab17c6c942bd428984b6b37fe3c07f18ab3 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 4b5a3ab17c6c942bd428984b6b37fe3c07f18ab3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c:4600:3: warning: variable 'val' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] if (!is_rvu_otx2(rvu)) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:56:28: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:58:30: note: expanded from macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c:4604:3: note: uninitialized use occurs here val |= FIELD_PREP(IPSEC_GEN_CFG_EGRP, req->gen_cfg.egrp); ^~~ drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c:4600:3: note: remove the 'if' if its condition is always true if (!is_rvu_otx2(rvu)) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:56:23: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^ drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c:4595:9: note: initialize the variable 'val' to silence this warning u64 val; ^ = 0 1 warning generated. vim +4600 drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c 4590 4591 static void nix_inline_ipsec_cfg(struct rvu *rvu, struct nix_inline_ipsec_cfg *req, 4592 int blkaddr) 4593 { 4594 u8 cpt_idx, cpt_blkaddr; 4595 u64 val; 4596 4597 cpt_idx = (blkaddr == BLKADDR_NIX0) ? 0 : 1; 4598 if (req->enable) { 4599 /* Enable context prefetching */ > 4600 if (!is_rvu_otx2(rvu)) 4601 val = BIT_ULL(51); 4602 4603 /* Set OPCODE and EGRP */ 4604 val |= FIELD_PREP(IPSEC_GEN_CFG_EGRP, req->gen_cfg.egrp); 4605 val |= FIELD_PREP(IPSEC_GEN_CFG_OPCODE, req->gen_cfg.opcode); 4606 val |= FIELD_PREP(IPSEC_GEN_CFG_PARAM1, req->gen_cfg.param1); 4607 val |= FIELD_PREP(IPSEC_GEN_CFG_PARAM2, req->gen_cfg.param2); 4608 4609 rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, val); 4610 4611 /* Set CPT queue for inline IPSec */ 4612 val = FIELD_PREP(CPT_INST_QSEL_SLOT, req->inst_qsel.cpt_slot); 4613 val |= FIELD_PREP(CPT_INST_QSEL_PF_FUNC, 4614 req->inst_qsel.cpt_pf_func); 4615 4616 if (!is_rvu_otx2(rvu)) { 4617 cpt_blkaddr = (cpt_idx == 0) ? BLKADDR_CPT0 : 4618 BLKADDR_CPT1; 4619 val |= FIELD_PREP(CPT_INST_QSEL_BLOCK, cpt_blkaddr); 4620 } 4621 4622 rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx), 4623 val); 4624 4625 /* Set CPT credit */ 4626 rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx), 4627 req->cpt_credit); 4628 } else { 4629 rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, 0x0); 4630 rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx), 4631 0x0); 4632 rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx), 4633 0x3FFFFF); 4634 } 4635 } 4636 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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