linux-kernel - Re: [PATCH 3/3] mm: make pagoff

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Date:   Sun, 11 Dec 2016 21:41:01 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Yury Norov <ynorov@...iumnetworks.com>
Cc:     kbuild-all@...org, Yury Norov <ynorov@...iumnetworks.com>,
        Arnd Bergmann <arnd@...db.de>,
        "Dr. Philipp Tomsich" <philipp.tomsich@...obroma-systems.com>,
        Catalin Marinas <catalin.marinas@....com>,
        libc-alpha@...rceware.org, linux-arch@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>, szabolcs.nagy@....com,
        heiko.carstens@...ibm.com, cmetcalf@...hip.com,
        "Joseph S. Myers" <joseph@...esourcery.com>,
        zhouchengming1@...wei.com,
        "Kapoor, Prasun" <Prasun.Kapoor@...iumnetworks.com>,
        Alexander Graf <agraf@...e.de>, geert@...ux-m68k.org,
        kilobyte@...band.pl, manuel.montezelo@...il.com,
        Andrew Pinski <pinskia@...il.com>, linyongting@...wei.com,
        Alexey Klimov <klimov.linux@...il.com>, broonie@...nel.org,
        "Zhangjian (Bamvor)" <bamvor.zhangjian@...wei.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Nathan Lynch <Nathan_Lynch@...tor.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        davem@...emloft.net, christoph.muellner@...obroma-systems.com
Subject: Re: [PATCH 3/3] mm: make pagoff_t type 64-bit

Hi Yury,

[auto build test WARNING on linus/master]
[also build test WARNING on v4.9-rc8]
[cannot apply to mmotm/master next-20161209]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Yury-Norov/mm-move-argument-checkers-of-mmap_pgoff-to-separated-routine/20161211-211314
config: i386-randconfig-x003-201650 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   fs/ext2/dir.c: In function 'ext2_check_page':
>> fs/ext2/dir.c:177:56: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 4 has type 'long unsigned int' [-Wformat=]
      ext2_error(sb, __func__, "bad entry in directory #%llu: : %s - "
                                                           ^
>> fs/ext2/dir.c:177:28: warning: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'long long unsigned int' [-Wformat=]
      ext2_error(sb, __func__, "bad entry in directory #%llu: : %s - "
                               ^
   fs/ext2/dir.c:187:28: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 4 has type 'long unsigned int' [-Wformat=]
       "entry in directory #%llu spans the page boundary"
                               ^
   fs/ext2/dir.c:187:4: warning: format '%lu' expects argument of type 'long unsigned int', but argument 5 has type 'long long unsigned int' [-Wformat=]
       "entry in directory #%llu spans the page boundary"
       ^

vim +177 fs/ext2/dir.c

   161	Eshort:
   162		error = "rec_len is smaller than minimal";
   163		goto bad_entry;
   164	Ealign:
   165		error = "unaligned directory entry";
   166		goto bad_entry;
   167	Enamelen:
   168		error = "rec_len is too small for name_len";
   169		goto bad_entry;
   170	Espan:
   171		error = "directory entry across blocks";
   172		goto bad_entry;
   173	Einumber:
   174		error = "inode out of bounds";
   175	bad_entry:
   176		if (!quiet)
 > 177			ext2_error(sb, __func__, "bad entry in directory #%llu: : %s - "
   178				"offset=%lu, inode=%lu, rec_len=%d, name_len=%d",
   179				dir->i_ino, error, (page->index<<PAGE_SHIFT)+offs,
   180				(unsigned long) le32_to_cpu(p->inode),
   181				rec_len, p->name_len);
   182		goto fail;
   183	Eend:
   184		if (!quiet) {
   185			p = (ext2_dirent *)(kaddr + offs);

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