* [android-common:main-16k-gs-shusky-5.15 35/35] drivers/cma/mm/mem_phys_layout.c:252:39: warning: initialization of 'struct mem_section *' from 'int' makes pointer from integer without a cast
@ 2026-07-28 10:31 kernel test robot
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From: kernel test robot @ 2026-07-28 10:31 UTC (permalink / raw)
To: cros-kernel-buildreports; +Cc: oe-kbuild-all
tree: https://android.googlesource.com/kernel/common main-16k-gs-shusky-5.15
head: d0ed0375a65ca817f907805e163e103822348f02
commit: 90b05bcbb174b28bb0bc20f6d7f68c092a66a64f [35/35] ANDROID: mm: Get Physical memory model for the system
config: i386-randconfig-005-20260728 (https://download.01.org/0day-ci/archive/20260728/202607281822.PQ5lousk-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260728/202607281822.PQ5lousk-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607281822.PQ5lousk-lkp@intel.com/
All warnings (new ones prefixed by >>):
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:112:9: note: in expansion of macro 'pr_info'
112 | pr_info(" PFN: %10llu == %#010Lx struct page[mem %#010Lx], PHYS[mem %#010Lx]",
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c: In function 'print_page_flags':
drivers/cma/mm/mem_phys_layout.c:189:17: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
189 | struct page *page = pfn_to_page(pfn);
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c: In function 'print_phys_memory_model':
drivers/cma/mm/mem_phys_layout.c:237:55: error: 'MAX_PAGE_ORDER' undeclared (first use in this function)
237 | pr_info("MAX_PAGE_ORDER = %d", MAX_PAGE_ORDER);
| ^~~~~~~~~~~~~~
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:237:9: note: in expansion of macro 'pr_info'
237 | pr_info("MAX_PAGE_ORDER = %d", MAX_PAGE_ORDER);
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c:237:55: note: each undeclared identifier is reported only once for each function it appears in
237 | pr_info("MAX_PAGE_ORDER = %d", MAX_PAGE_ORDER);
| ^~~~~~~~~~~~~~
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:237:9: note: in expansion of macro 'pr_info'
237 | pr_info("MAX_PAGE_ORDER = %d", MAX_PAGE_ORDER);
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c:239:55: error: 'PFN_SECTION_SHIFT' undeclared (first use in this function); did you mean 'SECTIONS_SHIFT'?
239 | pr_info("PFN_SECTION_SHIFT = %d", PFN_SECTION_SHIFT);
| ^~~~~~~~~~~~~~~~~
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:239:9: note: in expansion of macro 'pr_info'
239 | pr_info("PFN_SECTION_SHIFT = %d", PFN_SECTION_SHIFT);
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c:241:55: error: 'SECTION_SIZE_BITS' undeclared (first use in this function)
241 | pr_info("SECTION_SIZE_BITS = %d", SECTION_SIZE_BITS);
| ^~~~~~~~~~~~~~~~~
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:241:9: note: in expansion of macro 'pr_info'
241 | pr_info("SECTION_SIZE_BITS = %d", SECTION_SIZE_BITS);
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c:243:56: error: 'SUBSECTION_SIZE' undeclared (first use in this function)
243 | pr_info("SUBSECTION_SIZE = %ld", SUBSECTION_SIZE);
| ^~~~~~~~~~~~~~~
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:243:9: note: in expansion of macro 'pr_info'
243 | pr_info("SUBSECTION_SIZE = %ld", SUBSECTION_SIZE);
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c:244:56: error: 'SUBSECTIONS_PER_SECTION' undeclared (first use in this function)
244 | pr_info("SUBSECTIONS_PER_SECTION = %ld", SUBSECTIONS_PER_SECTION);
| ^~~~~~~~~~~~~~~~~~~~~~~
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:244:9: note: in expansion of macro 'pr_info'
244 | pr_info("SUBSECTIONS_PER_SECTION = %ld", SUBSECTIONS_PER_SECTION);
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c:248:50: error: 'PAGES_PER_SUBSECTION' undeclared (first use in this function)
248 | pr_info("PAGES_PER_SUBSECTION = %ld", PAGES_PER_SUBSECTION);
| ^~~~~~~~~~~~~~~~~~~~
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:248:9: note: in expansion of macro 'pr_info'
248 | pr_info("PAGES_PER_SUBSECTION = %ld", PAGES_PER_SUBSECTION);
| ^~~~~~~
drivers/cma/mm/mem_phys_layout.c:250:9: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
250 | phys_addr_t start_addr = memblock_start_of_DRAM();
| ^~~~~~~~~~~
drivers/cma/mm/mem_phys_layout.c:252:39: error: implicit declaration of function '__pfn_to_section' [-Werror=implicit-function-declaration]
252 | struct mem_section *section = __pfn_to_section(start_pfn);
| ^~~~~~~~~~~~~~~~
>> drivers/cma/mm/mem_phys_layout.c:252:39: warning: initialization of 'struct mem_section *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
drivers/cma/mm/mem_phys_layout.c:253:29: error: implicit declaration of function '__section_mem_map_addr' [-Werror=implicit-function-declaration]
253 | struct page *page = __section_mem_map_addr(section);
| ^~~~~~~~~~~~~~~~~~~~~~
>> drivers/cma/mm/mem_phys_layout.c:253:29: warning: initialization of 'struct page *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
drivers/cma/mm/mem_phys_layout.c:259:25: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
259 | (u64) page,
| ^
include/linux/printk.h:422:33: note: in definition of macro 'printk_index_wrap'
422 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/printk.h:523:9: note: in expansion of macro 'printk'
523 | printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
drivers/cma/mm/mem_phys_layout.c:256:9: note: in expansion of macro 'pr_info'
256 | pr_info(" PFN: %10llu == %#010Lx struct page[mem %#010Lx], PHYS[mem %#010Lx]",
| ^~~~~~~
cc1: some warnings being treated as errors
vim +252 drivers/cma/mm/mem_phys_layout.c
234
235 static void print_phys_memory_model(void)
236 {
237 pr_info("MAX_PAGE_ORDER = %d", MAX_PAGE_ORDER);
238 pr_info("pageblock_order = %d", pageblock_order);
239 pr_info("PFN_SECTION_SHIFT = %d", PFN_SECTION_SHIFT);
240 pr_info("(MAX_PAGE_ORDER + PAGE_SHIFT) = %d", (MAX_PAGE_ORDER + PAGE_SHIFT));
241 pr_info("SECTION_SIZE_BITS = %d", SECTION_SIZE_BITS);
242 pr_info("2 ^ SECTION_SIZE_BITS = %d", (1 << SECTION_SIZE_BITS));
243 pr_info("SUBSECTION_SIZE = %ld", SUBSECTION_SIZE);
244 pr_info("SUBSECTIONS_PER_SECTION = %ld", SUBSECTIONS_PER_SECTION);
245 pr_info("SUBSECTION_SIZE * SUBSECTIONS_PER_SECTION = %ld = %ldMiB",
246 SUBSECTION_SIZE * SUBSECTIONS_PER_SECTION,
247 SUBSECTION_SIZE * SUBSECTIONS_PER_SECTION / 1024 / 1024);
248 pr_info("PAGES_PER_SUBSECTION = %ld", PAGES_PER_SUBSECTION);
249
250 phys_addr_t start_addr = memblock_start_of_DRAM();
251 unsigned long start_pfn = PHYS_PFN(start_addr);
> 252 struct mem_section *section = __pfn_to_section(start_pfn);
> 253 struct page *page = __section_mem_map_addr(section);
254
255 pr_info("Using struct mem_section");
256 pr_info(" PFN: %10llu == %#010Lx struct page[mem %#010Lx], PHYS[mem %#010Lx]",
257 (u64)start_pfn,
258 (u64)start_pfn,
259 (u64) page,
260 (u64)PFN_PHYS(start_pfn));
261 }
262
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-07-28 10:31 [android-common:main-16k-gs-shusky-5.15 35/35] drivers/cma/mm/mem_phys_layout.c:252:39: warning: initialization of 'struct mem_section *' from 'int' makes pointer from integer without a cast kernel test robot
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