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dkim=pass header.d=oracle.com header.s=corp-2021-07-09 header.b="UN/EiCmv"; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b="hF/jaKat"; spf=none (imf07.hostedemail.com: domain of liam.howlett@oracle.com has no SPF policy when checking 205.220.165.32) smtp.mailfrom=liam.howlett@oracle.com; dmarc=pass (policy=none) header.from=oracle.com X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: B65D340002 X-HE-Tag: 1645725098-912718 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: * kernel test robot [220224 02:51]: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.g= it master > head: d4a0ae62a277377de396850ed4b709b6bd9b7326 > commit: b3d7ba3cdf23cae36715a695c7569f617e57d39d [6850/7915] mm: Remove t= he vma linked list > config: h8300-buildonly-randconfig-r003-20220224 (https://download.01.org= /0day-ci/archive/20220224/202202241525.pbzn4rHq-lkp@intel.com/config) > compiler: h8300-linux-gcc (GCC) 11.2.0 > reproduce (this is a W=3D1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbi= n/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next= .git/commit/?id=3Db3d7ba3cdf23cae36715a695c7569f617e57d39d > git remote add linux-next https://git.kernel.org/pub/scm/linux/ke= rnel/git/next/linux-next.git > git fetch --no-tags linux-next master > git checkout b3d7ba3cdf23cae36715a695c7569f617e57d39d > # save the config file to linux build tree > mkdir build_dir > COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dgcc-11.2.0 make.cro= ss O=3Dbuild_dir ARCH=3Dh8300 SHELL=3D/bin/bash >=20 > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot >=20 > All warnings (new ones prefixed by >>): >=20 > In file included from arch/h8300/include/asm/page.h:5, > from arch/h8300/include/asm/thread_info.h:12, > from include/linux/thread_info.h:60, > from include/asm-generic/preempt.h:5, > from ./arch/h8300/include/generated/asm/preempt.h:1, > from include/linux/preempt.h:78, > from include/linux/spinlock.h:55, > from include/linux/mmzone.h:8, > from include/linux/gfp.h:6, > from include/linux/mm.h:10, > from mm/nommu.c:20: > mm/nommu.c: In function 'kobjsize': > include/asm-generic/page.h:89:51: warning: ordered comparison of point= er with null pointer [-Wextra] > 89 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >=3D (void *= )PAGE_OFFSET) && \ > | ^~ > mm/nommu.c:79:23: note: in expansion of macro 'virt_addr_valid' > 79 | if (!objp || !virt_addr_valid(objp)) > | ^~~~~~~~~~~~~~~ > mm/nommu.c: In function 'add_vma_to_mm': > >> mm/nommu.c:554:32: warning: variable 'prev' set but not used [-Wunused= -but-set-variable] > 554 | struct vm_area_struct *prev; > | ^~~~ >=20 Thank you. prev is no longer needed. I have fixed this for linux-next. >=20 > vim +/prev +554 mm/nommu.c >=20 > ^1da177e4c3f41 Linus Torvalds 2005-04-16 544 =20 > 3034097a5017dd David Howells 2006-09-27 545 /* > 8feae13110d60c David Howells 2009-01-08 546 * add a VMA into a pro= cess's mm_struct in the appropriate place in the list > 8feae13110d60c David Howells 2009-01-08 547 * and tree and add to = the address space's page tree also if not an anonymous > 8feae13110d60c David Howells 2009-01-08 548 * page > c1e8d7c6a7a682 Michel Lespinasse 2020-06-08 549 * - should be called w= ith mm->mmap_lock held writelocked > 3034097a5017dd David Howells 2006-09-27 550 */ > 8feae13110d60c David Howells 2009-01-08 551 static void add_vma_to_= mm(struct mm_struct *mm, struct vm_area_struct *vma) > ^1da177e4c3f41 Linus Torvalds 2005-04-16 552 { > ^1da177e4c3f41 Linus Torvalds 2005-04-16 553 struct address_space *= mapping; > 4b662c6ba9aa9e Liam R. Howlett 2020-07-24 @554 struct vm_area_struct = *prev; > 4b662c6ba9aa9e Liam R. Howlett 2020-07-24 555 MA_STATE(mas, &mm->mm_= mt, vma->vm_start, vma->vm_end); > 8feae13110d60c David Howells 2009-01-08 556 =20 > 8feae13110d60c David Howells 2009-01-08 557 BUG_ON(!vma->vm_region= ); > 8feae13110d60c David Howells 2009-01-08 558 =20 > 8feae13110d60c David Howells 2009-01-08 559 mm->map_count++; > 8feae13110d60c David Howells 2009-01-08 560 vma->vm_mm =3D mm; > ^1da177e4c3f41 Linus Torvalds 2005-04-16 561 =20 > ^1da177e4c3f41 Linus Torvalds 2005-04-16 562 /* add the VMA to the = mapping */ > ^1da177e4c3f41 Linus Torvalds 2005-04-16 563 if (vma->vm_file) { > ^1da177e4c3f41 Linus Torvalds 2005-04-16 564 mapping =3D vma->vm_f= ile->f_mapping; > ^1da177e4c3f41 Linus Torvalds 2005-04-16 565 =20 > 83cde9e8ba95d1 Davidlohr Bueso 2014-12-12 566 i_mmap_lock_write(map= ping); > ^1da177e4c3f41 Linus Torvalds 2005-04-16 567 flush_dcache_mmap_loc= k(mapping); > 6b2dbba8b6ac4d Michel Lespinasse 2012-10-08 568 vma_interval_tree_ins= ert(vma, &mapping->i_mmap); > ^1da177e4c3f41 Linus Torvalds 2005-04-16 569 flush_dcache_mmap_unl= ock(mapping); > 83cde9e8ba95d1 Davidlohr Bueso 2014-12-12 570 i_mmap_unlock_write(m= apping); > ^1da177e4c3f41 Linus Torvalds 2005-04-16 571 } > ^1da177e4c3f41 Linus Torvalds 2005-04-16 572 =20 > 4b662c6ba9aa9e Liam R. Howlett 2020-07-24 573 prev =3D mas_prev(&mas= , 0); > 4b662c6ba9aa9e Liam R. Howlett 2020-07-24 574 mas_reset(&mas); > 8feae13110d60c David Howells 2009-01-08 575 /* add the VMA to the = tree */ > 4b662c6ba9aa9e Liam R. Howlett 2020-07-24 576 vma_mas_store(vma, &ma= s); > ^1da177e4c3f41 Linus Torvalds 2005-04-16 577 } > ^1da177e4c3f41 Linus Torvalds 2005-04-16 578 =20 >=20 > :::::: The code at line 554 was first introduced by commit > :::::: 4b662c6ba9aa9ed30b302eade5a79e857fc881b4 mm: Remove rb tree. >=20 > :::::: TO: Liam R. Howlett > :::::: CC: Liam R. Howlett >=20 > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org=