tree: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-next head: 9c1e67f941019907034d7e5584c891603cce2d8e commit: 39d3e7584a686541a3295ff1624d341e669e1afc [16/18] rdmacg: Added rdma cgroup controller config: ia64-allmodconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 6.2.0 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 39d3e7584a686541a3295ff1624d341e669e1afc # save the attached .config to linux build tree make.cross ARCH=ia64 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): kernel/cgroup/rdma.c: In function 'rdmacg_resource_read': >> kernel/cgroup/rdma.c:526:4: warning: 'value' may be used uninitialized in this function [-Wmaybe-uninitialized] seq_printf(sf, "%d", value); ^~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/cgroup/rdma.c:506:6: note: 'value' was declared here u32 value; ^~~~~ vim +/value +526 kernel/cgroup/rdma.c 510 for (i = 0; i < RDMACG_RESOURCE_MAX; i++) { 511 seq_puts(sf, rdmacg_resource_names[i]); 512 seq_putc(sf, '='); 513 if (sf_type == RDMACG_RESOURCE_TYPE_MAX) { 514 if (rpool) 515 value = rpool->resources[i].max; 516 else 517 value = S32_MAX; 518 } else { 519 if (rpool) 520 value = rpool->resources[i].usage; 521 } 522 523 if (value == S32_MAX) 524 seq_puts(sf, RDMACG_MAX_STR); 525 else > 526 seq_printf(sf, "%d", value); 527 seq_putc(sf, ' '); 528 } 529 } 530 531 static int rdmacg_resource_read(struct seq_file *sf, void *v) 532 { 533 struct rdmacg_device *device; 534 struct rdmacg_resource_pool *rpool; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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