On Thu, 2020-07-09 at 23:34 +0800, kernel test robot wrote: > tree: https://urldefense.com/v3/__https://github.com/hnaz/linux-mm__;!!CTRNKA9wMg0ARbw!3r5leFwzjxeyTP9aAUqGEUfLd1nx0fI3_vptGFWPtxjK1xVnFERaYP7Z44cpE7WytQ6N8A$ 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://urldefense.com/v3/__https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross__;!!CTRNKA9wMg0ARbw!3r5leFwzjxeyTP9aAUqGEUfLd1nx0fI3_vptGFWPtxjK1xVnFERaYP7Z44cpE7XOATg3qw$ -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); > | ^~ Hi, It should not be a problem, this commit("rcu: kasan: record and print call_rcu() call stack") need to depend my another commit ("kasan: record and print the free track"). They is the same series, please see below information. Thanks. The series (4): rcu: kasan: record and print call_rcu() call stack kasan: record and print the free track kasan: add tests for call_rcu stack recording kasan: update documentation for generic kasan > >> 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://urldefense.com/v3/__https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org__;!!CTRNKA9wMg0ARbw!3r5leFwzjxeyTP9aAUqGEUfLd1nx0fI3_vptGFWPtxjK1xVnFERaYP7Z44cpE7XCqxNtRA$
