Hi Jonathan, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on net/master] [also build test ERROR on linus/master v5.8-rc1 next-20200618] [cannot apply to char-misc/char-misc-testing net-next/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Jonathan-Lemon/netgpu-networking... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git ef7232da6bcd4294cbb2d424bc35885721570f01 config: i386-tinyconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from arch/x86/include/asm/preempt.h:7, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/seqlock.h:36, from include/linux/time.h:6, from include/linux/stat.h:19, from include/linux/module.h:13, from init/do_mounts.c:2: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/mm.h:9, from kernel/exit.c:8: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ kernel/exit.c: At top level: kernel/exit.c:1714:13: warning: no previous prototype for 'abort' [-Wmissing-prototypes] 1714 | __weak void abort(void) | ^~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/jump_label.h:250, from include/linux/static_key.h:1, from arch/x86/include/asm/nospec-branch.h:6, from arch/x86/include/asm/irqflags.h:9, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/sched.h:5, from kernel/sched/core.c:9: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ kernel/sched/core.c: In function 'ttwu_stat': kernel/sched/core.c:2160:13: warning: variable 'rq' set but not used [-Wunused-but-set-variable] 2160 | struct rq *rq; | ^~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/jump_label.h:250, from include/linux/static_key.h:1, from arch/x86/include/asm/nospec-branch.h:6, from arch/x86/include/asm/irqflags.h:9, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/sched.h:5, from kernel/sched/fair.c:23: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ kernel/sched/fair.c: At top level: kernel/sched/fair.c:5352:6: warning: no previous prototype for 'init_cfs_bandwidth' [-Wmissing-prototypes] 5352 | void init_cfs_bandwidth(struct cfs_bandwidth *cfs_b) {} | ^~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11078:6: warning: no previous prototype for 'free_fair_sched_group' [-Wmissing-prototypes] 11078 | void free_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11080:5: warning: no previous prototype for 'alloc_fair_sched_group' [-Wmissing-prototypes] 11080 | int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) | ^~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11085:6: warning: no previous prototype for 'online_fair_sched_group' [-Wmissing-prototypes] 11085 | void online_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/fair.c:11087:6: warning: no previous prototype for 'unregister_fair_sched_group' [-Wmissing-prototypes] 11087 | void unregister_fair_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/jump_label.h:250, from include/linux/static_key.h:1, from arch/x86/include/asm/nospec-branch.h:6, from arch/x86/include/asm/irqflags.h:9, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from kernel/sched/sched.h:5, from kernel/sched/rt.c:6: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ kernel/sched/rt.c: At top level: kernel/sched/rt.c:253:6: warning: no previous prototype for 'free_rt_sched_group' [-Wmissing-prototypes] 253 | void free_rt_sched_group(struct task_group *tg) { } | ^~~~~~~~~~~~~~~~~~~ kernel/sched/rt.c:255:5: warning: no previous prototype for 'alloc_rt_sched_group' [-Wmissing-prototypes] 255 | int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent) | ^~~~~~~~~~~~~~~~~~~~ kernel/sched/rt.c:668:6: warning: no previous prototype for 'sched_rt_bandwidth_account' [-Wmissing-prototypes] 668 | bool sched_rt_bandwidth_account(struct rt_rq *rt_rq) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/thread_info.h:12, from arch/x86/include/asm/preempt.h:7, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/wait.h:9, from include/linux/wait_bit.h:8, from include/linux/fs.h:6, from kernel/events/core.c:11: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ kernel/events/core.c: At top level: kernel/events/core.c:6490:6: warning: no previous prototype for 'perf_pmu_snapshot_aux' [-Wmissing-prototypes] 6490 | long perf_pmu_snapshot_aux(struct perf_buffer *rb, | ^~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/mm.h:9, from arch/x86/kernel/doublefault_32.c:2: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ arch/x86/kernel/doublefault_32.c: At top level: arch/x86/kernel/doublefault_32.c:23:36: warning: no previous prototype for 'doublefault_shim' [-Wmissing-prototypes] 23 | asmlinkage noinstr void __noreturn doublefault_shim(void) | ^~~~~~~~~~~~~~~~ arch/x86/kernel/doublefault_32.c:119:6: warning: no previous prototype for 'doublefault_init_cpu_tss' [-Wmissing-prototypes] 119 | void doublefault_init_cpu_tss(void) | ^~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/gfp.h:5, from include/linux/slab.h:15, from arch/x86/kernel/cpu/cacheinfo.c:11: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ arch/x86/kernel/cpu/cacheinfo.c: In function 'init_intel_cacheinfo': arch/x86/kernel/cpu/cacheinfo.c:727:26: warning: variable 'l3_id' set but not used [-Wunused-but-set-variable] 727 | unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb; | ^~~~~ arch/x86/kernel/cpu/cacheinfo.c:727:15: warning: variable 'l2_id' set but not used [-Wunused-but-set-variable] 727 | unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb; | ^~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/jump_label.h:250, from include/linux/static_key.h:1, from arch/x86/include/asm/nospec-branch.h:6, from arch/x86/include/asm/irqflags.h:9, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/audit.h:12, from security/commoncap.c:6: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ In file included from include/linux/capability.h:16, from security/commoncap.c:5: security/commoncap.c: In function 'cap_prctl_drop': include/uapi/linux/capability.h:413:27: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 413 | #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) | ^~ security/commoncap.c:1147:7: note: in expansion of macro 'cap_valid' 1147 | if (!cap_valid(cap)) | ^~~~~~~~~ security/commoncap.c: In function 'cap_task_prctl': include/uapi/linux/capability.h:413:27: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 413 | #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) | ^~ security/commoncap.c:1177:8: note: in expansion of macro 'cap_valid' 1177 | if (!cap_valid(arg2)) | ^~~~~~~~~ include/uapi/linux/capability.h:413:27: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 413 | #define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP) | ^~ security/commoncap.c:1262:10: note: in expansion of macro 'cap_valid' 1262 | if (((!cap_valid(arg3)) | arg4 | arg5)) | ^~~~~~~~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/cpumask.h:14, from arch/x86/include/asm/cpumask.h:5, from arch/x86/include/asm/msr.h:11, from arch/x86/include/asm/processor.h:22, from include/linux/mutex.h:19, from include/linux/notifier.h:14, from include/linux/clk.h:14, from lib/vsprintf.c:22: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ lib/vsprintf.c: In function 'va_format': lib/vsprintf.c:1660:2: warning: function 'va_format' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 1660 | buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va); | ^~~ cc1: some warnings being treated as errors -- In file included from arch/x86/include/asm/bug.h:86, from include/linux/bug.h:5, from include/linux/jump_label.h:250, from include/linux/static_key.h:1, from arch/x86/include/asm/nospec-branch.h:6, from arch/x86/include/asm/irqflags.h:9, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from include/linux/platform_device.h:13, from drivers/base/platform.c:13: include/linux/dma-mapping.h: In function 'dma_map_resource': 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~ include/asm-generic/bug.h:187:25: note: in definition of macro 'WARN_ON' 187 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/dma-mapping.h:352:6: note: in expansion of macro 'WARN_ON_ONCE' 352 | if (WARN_ON_ONCE(pfn_online(PHYS_PFN(phys_addr)))) | ^~~~~~~~~~~~ drivers/base/platform.c: At top level: drivers/base/platform.c:1352:20: warning: no previous prototype for 'early_platform_cleanup' [-Wmissing-prototypes] 1352 | void __weak __init early_platform_cleanup(void) { } | ^~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +352 include/linux/dma-mapping.h 339 340 static inline dma_addr_t dma_map_resource(struct device *dev, 341 phys_addr_t phys_addr, 342 size_t size, 343 enum dma_data_direction dir, 344 unsigned long attrs) 345 { 346 const struct dma_map_ops *ops = get_dma_ops(dev); 347 dma_addr_t addr = DMA_MAPPING_ERROR; 348 349 BUG_ON(!valid_dma_direction(dir)); 350 351 /* Don't allow online RAM to be mapped */ 353 return DMA_MAPPING_ERROR; 354 355 if (dma_is_direct(ops)) 356 addr = dma_direct_map_resource(dev, phys_addr, size, dir, attrs); 357 else if (ops->map_resource) 358 addr = ops->map_resource(dev, phys_addr, size, dir, attrs); 359 360 debug_dma_map_resource(dev, phys_addr, size, dir, addr); 361 return addr; 362 } 363 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org