tree: https://github.com/hnaz/linux-mm master head: 12c0de83d877ea6b9078782f10f7a4a196aa16b1 commit: 16d798d57643c9b50fe8922c8324081f3c5bec78 [145/290] rcu: kasan: record and print call_rcu() call stack config: s390-allyesconfig (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 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 git checkout 16d798d57643c9b50fe8922c8324081f3c5bec78 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> Note: the hnaz-linux-mm/master HEAD 12c0de83d877ea6b9078782f10f7a4a196aa16b1 builds fine. It only hurts bisectibility. All error/warnings (new ones prefixed by >>): mm/kasan/report.c: In function 'kasan_addr_to_page': mm/kasan/report.c:130:12: warning: ordered comparison of pointer with null pointer [-Wextra] 130 | if ((addr >= (void *)PAGE_OFFSET) && | ^~ mm/kasan/report.c: In function 'kasan_get_free_track': >> mm/kasan/report.c:185:20: error: 'struct kasan_alloc_meta' has no member named 'free_track' 185 | return &alloc_meta->free_track[i]; | ^~ >> mm/kasan/report.c:172:6: warning: variable 'i' set but not used [-Wunused-but-set-variable] 172 | int i = 0; | ^ >> mm/kasan/report.c:186:1: warning: control reaches end of non-void function [-Wreturn-type] 186 | } | ^ -- mm/kasan/common.c: In function 'kasan_set_free_info': >> mm/kasan/common.c:316:23: error: 'struct kasan_alloc_meta' has no member named 'free_track' 316 | set_track(&alloc_meta->free_track[idx], GFP_NOWAIT); | ^~ >> mm/kasan/common.c:306:5: warning: variable 'idx' set but not used [-Wunused-but-set-variable] 306 | u8 idx = 0; | ^~~ vim +185 mm/kasan/report.c 0c06f1f86c87b1 Andrey Konovalov 2017-05-03 167 ae8f06b31a83e5 Walter Wu 2019-09-23 168 static struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, ae8f06b31a83e5 Walter Wu 2019-09-23 169 void *object, u8 tag) ae8f06b31a83e5 Walter Wu 2019-09-23 170 { ae8f06b31a83e5 Walter Wu 2019-09-23 171 struct kasan_alloc_meta *alloc_meta; ae8f06b31a83e5 Walter Wu 2019-09-23 @172 int i = 0; ae8f06b31a83e5 Walter Wu 2019-09-23 173 ae8f06b31a83e5 Walter Wu 2019-09-23 174 alloc_meta = get_alloc_info(cache, object); ae8f06b31a83e5 Walter Wu 2019-09-23 175 ae8f06b31a83e5 Walter Wu 2019-09-23 176 #ifdef CONFIG_KASAN_SW_TAGS_IDENTIFY ae8f06b31a83e5 Walter Wu 2019-09-23 177 for (i = 0; i < KASAN_NR_FREE_STACKS; i++) { ae8f06b31a83e5 Walter Wu 2019-09-23 178 if (alloc_meta->free_pointer_tag[i] == tag) ae8f06b31a83e5 Walter Wu 2019-09-23 179 break; ae8f06b31a83e5 Walter Wu 2019-09-23 180 } ae8f06b31a83e5 Walter Wu 2019-09-23 181 if (i == KASAN_NR_FREE_STACKS) ae8f06b31a83e5 Walter Wu 2019-09-23 182 i = alloc_meta->free_track_idx; ae8f06b31a83e5 Walter Wu 2019-09-23 183 #endif ae8f06b31a83e5 Walter Wu 2019-09-23 184 ae8f06b31a83e5 Walter Wu 2019-09-23 @185 return &alloc_meta->free_track[i]; ae8f06b31a83e5 Walter Wu 2019-09-23 @186 } ae8f06b31a83e5 Walter Wu 2019-09-23 187 :::::: The code at line 185 was first introduced by commit :::::: ae8f06b31a83e54777514308a63f669a1fed519e kasan: add memory corruption identification for software tag-based mode :::::: TO: Walter Wu <walter-zh.wu@xxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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