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Date:   Fri, 5 May 2023 13:11:25 -0400
From:   "Liam R. Howlett" <Liam.Howlett@Oracle.com>
To:     kernel test robot <lkp@intel.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>, llvm@lists.linux.dev,
        oe-kbuild-all@lists.linux.dev,
        Linux Memory Management List <linux-mm@kvack.org>,
        linux-kernel@vger.kernel.org, maple-tree@lists.infradead.org
Subject: Re: [PATCH 33/34] maple_tree: Add testing for mas_{prev,next}_range()
Message-ID: <20230505171125.3icrksk7vem4fnqr@revolver>
Mail-Followup-To: "Liam R. Howlett" <Liam.Howlett@Oracle.com>,
        kernel test robot <lkp@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>, llvm@lists.linux.dev,
        oe-kbuild-all@lists.linux.dev,
        Linux Memory Management List <linux-mm@kvack.org>,
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References: <20230425140955.3834476-34-Liam.Howlett@oracle.com>
 <202304260916.KTgrhA2f-lkp@intel.com>
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* kernel test robot <lkp@intel.com> [230425 21:42]:
> Hi Liam,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on akpm-mm/mm-everything]
> [also build test ERROR on linus/master v6.3 next-20230425]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Liam-R-Howlett/maple_tree-Fix-static-analyser-cppcheck-issue/20230425-233958
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/20230425140955.3834476-34-Liam.Howlett%40oracle.com
> patch subject: [PATCH 33/34] maple_tree: Add testing for mas_{prev,next}_range()
> config: hexagon-randconfig-r045-20230424 (https://download.01.org/0day-ci/archive/20230426/202304260916.KTgrhA2f-lkp@intel.com/config)
> compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661)
> 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
>         # https://github.com/intel-lab-lkp/linux/commit/571139f33a7ede9db66c7892c40e88ed66a32bc5
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Liam-R-Howlett/maple_tree-Fix-static-analyser-cppcheck-issue/20230425-233958
>         git checkout 571139f33a7ede9db66c7892c40e88ed66a32bc5
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
> | Link: https://lore.kernel.org/oe-kbuild-all/202304260916.KTgrhA2f-lkp@intel.com/

Thanks.  This will be fixed in v2.

> 
> All errors (new ones prefixed by >>):
> 
> >> lib/test_maple_tree.c:3437:17: error: call to undeclared function 'mas_find_range'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>                    void *entry = mas_find_range(&mas, ULONG_MAX);
>                                  ^
> >> lib/test_maple_tree.c:3437:9: error: incompatible integer to pointer conversion initializing 'void *' with an expression of type 'int' [-Wint-conversion]
>                    void *entry = mas_find_range(&mas, ULONG_MAX);
>                          ^       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    lib/test_maple_tree.c:3443:2: error: call to undeclared function 'mas_find_range'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>            mas_contiguous(&mas, test, ULONG_MAX) {
>            ^
>    include/linux/maple_tree.h:545:22: note: expanded from macro 'mas_contiguous'
>            while (((__entry) = mas_find_range((__mas), (__max))) != NULL)
>                                ^
> >> lib/test_maple_tree.c:3443:2: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
>            mas_contiguous(&mas, test, ULONG_MAX) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/maple_tree.h:545:20: note: expanded from macro 'mas_contiguous'
>            while (((__entry) = mas_find_range((__mas), (__max))) != NULL)
>                              ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    lib/test_maple_tree.c:3453:2: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
>            mas_contiguous(&mas, test, ULONG_MAX) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/maple_tree.h:545:20: note: expanded from macro 'mas_contiguous'
>            while (((__entry) = mas_find_range((__mas), (__max))) != NULL)
>                              ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    lib/test_maple_tree.c:3464:2: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
>            mas_contiguous(&mas, test, 340) {
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    include/linux/maple_tree.h:545:20: note: expanded from macro 'mas_contiguous'
>            while (((__entry) = mas_find_range((__mas), (__max))) != NULL)
>                              ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    lib/test_maple_tree.c:3476:7: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
>            test = mas_find_range(&mas, ULONG_MAX);
>                 ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >> lib/test_maple_tree.c:3482:9: error: call to undeclared function 'mas_find_range_rev'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>            test = mas_find_range_rev(&mas, 0);
>                   ^
>    lib/test_maple_tree.c:3482:7: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
>            test = mas_find_range_rev(&mas, 0);
>                 ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    lib/test_maple_tree.c:3487:7: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
>            test = mas_find_range_rev(&mas, 0);
>                 ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    lib/test_maple_tree.c:3493:7: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
>            test = mas_find_range_rev(&mas, 340);
>                 ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    11 errors generated.
> 
> 
> vim +/mas_find_range +3437 lib/test_maple_tree.c
> 
>   3358	
>   3359	static noinline void __init check_slot_iterators(struct maple_tree *mt)
>   3360	{
>   3361		MA_STATE(mas, mt, 0, 0);
>   3362		unsigned long i, index = 40;
>   3363		unsigned char offset = 0;
>   3364		void *test;
>   3365	
>   3366		mt_set_non_kernel(99999);
>   3367	
>   3368		mas_lock(&mas);
>   3369		for (i = 0; i <= index; i++) {
>   3370			unsigned long end = 5;
>   3371			if (i > 20 && i < 35)
>   3372				end = 9;
>   3373			mas_set_range(&mas, i*10, i*10 + end);
>   3374			mas_store_gfp(&mas, xa_mk_value(i), GFP_KERNEL);
>   3375		}
>   3376	
>   3377		i = 21;
>   3378		mas_set(&mas, i*10);
>   3379		MAS_BUG_ON(&mas, mas_walk(&mas) != xa_mk_value(i));
>   3380		MAS_BUG_ON(&mas, mas_prev_range(&mas, 0) != NULL);
>   3381		MAS_BUG_ON(&mas, mas.index != 206);
>   3382		MAS_BUG_ON(&mas, mas.last != 209);
>   3383	
>   3384		i--;
>   3385		MAS_BUG_ON(&mas, mas_prev_range(&mas, 0) != xa_mk_value(i));
>   3386		MAS_BUG_ON(&mas, mas.index != 200);
>   3387		MAS_BUG_ON(&mas, mas.last != 205);
>   3388	
>   3389		i = 25;
>   3390		mas_set(&mas, i*10);
>   3391		MAS_BUG_ON(&mas, mas_walk(&mas) != xa_mk_value(i));
>   3392		MAS_BUG_ON(&mas, mas.offset != 0);
>   3393	
>   3394		/* Previous range is in another node */
>   3395		i--;
>   3396		MAS_BUG_ON(&mas, mas_prev_range(&mas, 0) != xa_mk_value(i));
>   3397		MAS_BUG_ON(&mas, mas.index != 240);
>   3398		MAS_BUG_ON(&mas, mas.last != 249);
>   3399	
>   3400		/* Shift back with mas_next */
>   3401		i++;
>   3402		MAS_BUG_ON(&mas, mas_next_range(&mas, ULONG_MAX) != xa_mk_value(i));
>   3403		MAS_BUG_ON(&mas, mas.index != 250);
>   3404		MAS_BUG_ON(&mas, mas.last != 259);
>   3405	
>   3406		i = 33;
>   3407		mas_set(&mas, i*10);
>   3408		MAS_BUG_ON(&mas, mas_walk(&mas) != xa_mk_value(i));
>   3409		MAS_BUG_ON(&mas, mas.index != 330);
>   3410		MAS_BUG_ON(&mas, mas.last != 339);
>   3411	
>   3412		/* Next range is in another node */
>   3413		i++;
>   3414		MAS_BUG_ON(&mas, mas_next_range(&mas, ULONG_MAX) != xa_mk_value(i));
>   3415		MAS_BUG_ON(&mas, mas.offset != 0);
>   3416		MAS_BUG_ON(&mas, mas.index != 340);
>   3417		MAS_BUG_ON(&mas, mas.last != 349);
>   3418	
>   3419		/* Next out of range */
>   3420		i++;
>   3421		MAS_BUG_ON(&mas, mas_next_range(&mas, i*10 - 1) != NULL);
>   3422		/* maple state does not move */
>   3423		MAS_BUG_ON(&mas, mas.offset != 0);
>   3424		MAS_BUG_ON(&mas, mas.index != 340);
>   3425		MAS_BUG_ON(&mas, mas.last != 349);
>   3426	
>   3427		/* Prev out of range */
>   3428		i--;
>   3429		MAS_BUG_ON(&mas, mas_prev_range(&mas, i*10 + 1) != NULL);
>   3430		/* maple state does not move */
>   3431		MAS_BUG_ON(&mas, mas.offset != 0);
>   3432		MAS_BUG_ON(&mas, mas.index != 340);
>   3433		MAS_BUG_ON(&mas, mas.last != 349);
>   3434	
>   3435		mas_set(&mas, 210);
>   3436		for (i = 210; i<= 350; i += 10) {
> > 3437			void *entry = mas_find_range(&mas, ULONG_MAX);
>   3438	
>   3439			MAS_BUG_ON(&mas, entry != xa_mk_value(i/10));
>   3440		}
>   3441	
>   3442		mas_set(&mas, 0);
> > 3443		mas_contiguous(&mas, test, ULONG_MAX) {
>   3444			MAS_BUG_ON(&mas, test != xa_mk_value(0));
>   3445			MAS_BUG_ON(&mas, mas.index != 0);
>   3446			MAS_BUG_ON(&mas, mas.last != 5);
>   3447		}
>   3448		MAS_BUG_ON(&mas, test != NULL);
>   3449		MAS_BUG_ON(&mas, mas.index != 6);
>   3450		MAS_BUG_ON(&mas, mas.last != 9);
>   3451	
>   3452		mas_set(&mas, 6);
>   3453		mas_contiguous(&mas, test, ULONG_MAX) {
>   3454			MAS_BUG_ON(&mas, test != xa_mk_value(1));
>   3455			MAS_BUG_ON(&mas, mas.index != 10);
>   3456			MAS_BUG_ON(&mas, mas.last != 15);
>   3457		}
>   3458		MAS_BUG_ON(&mas, test != NULL);
>   3459		MAS_BUG_ON(&mas, mas.index != 16);
>   3460		MAS_BUG_ON(&mas, mas.last != 19);
>   3461	
>   3462		i = 210;
>   3463		mas_set(&mas, i);
>   3464		mas_contiguous(&mas, test, 340) {
>   3465			MAS_BUG_ON(&mas, test != xa_mk_value(i/10));
>   3466			MAS_BUG_ON(&mas, mas.index != i);
>   3467			MAS_BUG_ON(&mas, mas.last != i+9);
>   3468			i+=10;
>   3469			offset = mas.offset;
>   3470		}
>   3471		/* Hit the limit, iterator is at the limit. */
>   3472		MAS_BUG_ON(&mas, offset != mas.offset);
>   3473		MAS_BUG_ON(&mas, test != NULL);
>   3474		MAS_BUG_ON(&mas, mas.index != 340);
>   3475		MAS_BUG_ON(&mas, mas.last != 349);
>   3476		test = mas_find_range(&mas, ULONG_MAX);
>   3477		MAS_BUG_ON(&mas, test != xa_mk_value(35));
>   3478		MAS_BUG_ON(&mas, mas.index != 350);
>   3479		MAS_BUG_ON(&mas, mas.last != 355);
>   3480	
>   3481	
> > 3482		test = mas_find_range_rev(&mas, 0);
>   3483		MAS_BUG_ON(&mas, test != xa_mk_value(34));
>   3484		MAS_BUG_ON(&mas, mas.index != 340);
>   3485		MAS_BUG_ON(&mas, mas.last != 349);
>   3486		mas_set(&mas, 345);
>   3487		test = mas_find_range_rev(&mas, 0);
>   3488		MAS_BUG_ON(&mas, test != xa_mk_value(34));
>   3489		MAS_BUG_ON(&mas, mas.index != 340);
>   3490		MAS_BUG_ON(&mas, mas.last != 349);
>   3491	
>   3492		offset = mas.offset;
>   3493		test = mas_find_range_rev(&mas, 340);
>   3494		MAS_BUG_ON(&mas, offset != mas.offset);
>   3495		MAS_BUG_ON(&mas, test != NULL);
>   3496		MAS_BUG_ON(&mas, mas.index != 340);
>   3497		MAS_BUG_ON(&mas, mas.last != 349);
>   3498	
>   3499		mas_unlock(&mas);
>   3500		mt_set_non_kernel(0);
>   3501	}
>   3502	
> 
> -- 
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests