From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EB134152166 for ; Wed, 27 Mar 2024 20:11:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711570306; cv=none; b=YIaVjpv61n/pedUX5kdoffND8e9V6zjO6JGmERnnUfgxPeHOKBN+/+LtBTdeJOsQ33b0umTdgwgYOoTm024iB+D84p5RWG93wqrKIdaEqD71z9R0sqoevGCEa73QpsGwbvVgllrYjnYDuuhGwibDz+wGR7D3IzcJm8waf8HcHlA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711570306; c=relaxed/simple; bh=UYdv9hkR0G19Khex6fIQRvOQJd16rq3CwK3eWPKAIZ4=; h=Date:To:From:Subject:Message-Id; b=Kg9aUhGpONHpXDQ7l406il4u0Hz8B3WqNzdxzt/5H7pgrSv0da/yQYAFG5fn7sJOg/KEAwG8garf2m5feHbBVW2as6LSiEETHa/2JfITbajv7xAxskvLWHPynuNA/Mr21AQHwNY/pzMyecl+D+QrmxwJnXXvnwzQt7fVBJDwc2w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=oRMlV25u; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="oRMlV25u" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91CC9C433F1; Wed, 27 Mar 2024 20:11:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1711570305; bh=UYdv9hkR0G19Khex6fIQRvOQJd16rq3CwK3eWPKAIZ4=; h=Date:To:From:Subject:From; b=oRMlV25uFl0VwKmj12s8TwwG4OBH6iZM8MIK89UQ3xRjlfBeI8dwnfTrO83fSnF75 2NZGA5E1lda5Yf6HymYkTtliAp71fb0QW0Jg7bmrhZsT4BKTKVIbLu2/nKltodP4bF rKQukrvmStSL6xMNDdvYmOe4dDtUOAZEAVywL8yU= Date: Wed, 27 Mar 2024 13:11:45 -0700 To: mm-commits@vger.kernel.org,tglx@linutronix.de,peterz@infradead.org,npiggin@gmail.com,naveen.n.rao@linux.ibm.com,mpe@ellerman.id.au,mingo@redhat.com,luto@kernel.org,Liam.Howlett@oracle.com,kirill.shutemov@linux.intel.com,keescook@chromium.org,James.Bottomley@HansenPartnership.com,hpa@zytor.com,guoren@kernel.org,deller@gmx.de,debug@rivosinc.com,dave.hansen@linux.intel.com,dan.j.williams@intel.com,christophe.leroy@csgroup.eu,broonie@kernel.org,bp@alien8.de,ast@kernel.org,aneesh.kumar@kernel.org,rick.p.edgecombe@intel.com,akpm@linux-foundation.org From: Andrew Morton Subject: + treewide-use-initializer-for-struct-vm_unmapped_area_info.patch added to mm-unstable branch Message-Id: <20240327201145.91CC9C433F1@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: treewide: use initializer for struct vm_unmapped_area_info has been added to the -mm mm-unstable branch. Its filename is treewide-use-initializer-for-struct-vm_unmapped_area_info.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/treewide-use-initializer-for-struct-vm_unmapped_area_info.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Rick Edgecombe Subject: treewide: use initializer for struct vm_unmapped_area_info Date: Mon, 25 Mar 2024 19:16:52 -0700 Future changes will need to add a new member to struct vm_unmapped_area_info. This would cause trouble for any call site that doesn't initialize the struct. Currently every caller sets each member manually, so if new ones are added they will be uninitialized and the core code parsing the struct will see garbage in the new member. It could be possible to initialize the new member manually to 0 at each call site. This and a couple other options were discussed. Having some struct vm_unmapped_area_info instances not zero initialized will put those sites at risk of feeding garbage into vm_unmapped_area(), if the convention is to zero initialize the struct and any new field addition missed a call site that initializes each field manually. So it is useful to do things similar across the kernel. The consensus (see links) was that in general the best way to accomplish taking into account both code cleanliness and minimizing the chance of introducing bugs, was to do C99 static initialization. As in: struct vm_unmapped_area_info info = {}; With this method of initialization, the whole struct will be zero initialized, and any statements setting fields to zero will be unneeded. The change should not leave cleanup at the call sides. While iterating though the possible solutions a few archs kindly acked other variations that still zero initialized the struct. These sites have been modified in previous changes using the pattern acked by the respective arch. So to be reduce the chance of bugs via uninitialized fields, perform a tree wide change using the consensus for the best general way to do this change. Use C99 static initializing to zero the struct and remove and statements that simply set members to zero. Link: https://lkml.kernel.org/r/20240326021656.202649-11-rick.p.edgecombe@intel.com Link: https://lore.kernel.org/lkml/202402280912.33AEE7A9CF@keescook/#t Link: https://lore.kernel.org/lkml/j7bfvig3gew3qruouxrh7z7ehjjafrgkbcmg6tcghhfh3rhmzi@wzlcoecgy5rs/ Link: https://lore.kernel.org/lkml/ec3e377a-c0a0-4dd3-9cb9-96517e54d17e@csgroup.eu/ Signed-off-by: Rick Edgecombe Reviewed-by: Kees Cook Cc: Alexei Starovoitov Cc: Andy Lutomirski Cc: Aneesh Kumar K.V Cc: Borislav Petkov (AMD) Cc: Christophe Leroy Cc: Dan Williams Cc: Dave Hansen Cc: Deepak Gupta Cc: Guo Ren Cc: Helge Deller Cc: H. Peter Anvin (Intel) Cc: Ingo Molnar Cc: "James E.J. Bottomley" Cc: Kirill A. Shutemov Cc: Liam R. Howlett Cc: Mark Brown Cc: Michael Ellerman Cc: Naveen N. Rao Cc: Nicholas Piggin Cc: Peter Zijlstra Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- arch/alpha/kernel/osf_sys.c | 5 +---- arch/arc/mm/mmap.c | 4 +--- arch/arm/mm/mmap.c | 5 ++--- arch/loongarch/mm/mmap.c | 3 +-- arch/mips/mm/mmap.c | 3 +-- arch/s390/mm/hugetlbpage.c | 7 ++----- arch/s390/mm/mmap.c | 5 ++--- arch/sh/mm/mmap.c | 5 ++--- arch/sparc/kernel/sys_sparc_32.c | 3 +-- arch/sparc/kernel/sys_sparc_64.c | 5 ++--- arch/sparc/mm/hugetlbpage.c | 7 ++----- arch/x86/kernel/sys_x86_64.c | 7 ++----- arch/x86/mm/hugetlbpage.c | 7 ++----- fs/hugetlbfs/inode.c | 7 ++----- mm/mmap.c | 9 ++------- 15 files changed, 25 insertions(+), 57 deletions(-) --- a/arch/alpha/kernel/osf_sys.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/alpha/kernel/osf_sys.c @@ -1218,14 +1218,11 @@ static unsigned long arch_get_unmapped_area_1(unsigned long addr, unsigned long len, unsigned long limit) { - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; - info.flags = 0; info.length = len; info.low_limit = addr; info.high_limit = limit; - info.align_mask = 0; - info.align_offset = 0; return vm_unmapped_area(&info); } --- a/arch/arc/mm/mmap.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/arc/mm/mmap.c @@ -27,7 +27,7 @@ arch_get_unmapped_area(struct file *filp { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; /* * We enforce the MAP_FIXED case. @@ -51,11 +51,9 @@ arch_get_unmapped_area(struct file *filp return addr; } - info.flags = 0; info.length = len; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; - info.align_mask = 0; info.align_offset = pgoff << PAGE_SHIFT; return vm_unmapped_area(&info); } --- a/arch/arm/mm/mmap.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/arm/mm/mmap.c @@ -34,7 +34,7 @@ arch_get_unmapped_area(struct file *filp struct vm_area_struct *vma; int do_align = 0; int aliasing = cache_is_vipt_aliasing(); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; /* * We only need to do colour alignment if either the I or D @@ -68,7 +68,6 @@ arch_get_unmapped_area(struct file *filp return addr; } - info.flags = 0; info.length = len; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; @@ -87,7 +86,7 @@ arch_get_unmapped_area_topdown(struct fi unsigned long addr = addr0; int do_align = 0; int aliasing = cache_is_vipt_aliasing(); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; /* * We only need to do colour alignment if either the I or D --- a/arch/loongarch/mm/mmap.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/loongarch/mm/mmap.c @@ -24,7 +24,7 @@ static unsigned long arch_get_unmapped_a struct vm_area_struct *vma; unsigned long addr = addr0; int do_color_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (unlikely(len > TASK_SIZE)) return -ENOMEM; @@ -82,7 +82,6 @@ static unsigned long arch_get_unmapped_a */ } - info.flags = 0; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; return vm_unmapped_area(&info); --- a/arch/mips/mm/mmap.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/mips/mm/mmap.c @@ -34,7 +34,7 @@ static unsigned long arch_get_unmapped_a struct vm_area_struct *vma; unsigned long addr = addr0; int do_color_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (unlikely(len > TASK_SIZE)) return -ENOMEM; @@ -92,7 +92,6 @@ static unsigned long arch_get_unmapped_a */ } - info.flags = 0; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; return vm_unmapped_area(&info); --- a/arch/s390/mm/hugetlbpage.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/s390/mm/hugetlbpage.c @@ -248,14 +248,12 @@ static unsigned long hugetlb_get_unmappe unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; - info.flags = 0; info.length = len; info.low_limit = current->mm->mmap_base; info.high_limit = TASK_SIZE; info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; return vm_unmapped_area(&info); } @@ -264,7 +262,7 @@ static unsigned long hugetlb_get_unmappe unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; unsigned long addr; info.flags = VM_UNMAPPED_AREA_TOPDOWN; @@ -272,7 +270,6 @@ static unsigned long hugetlb_get_unmappe info.low_limit = PAGE_SIZE; info.high_limit = current->mm->mmap_base; info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; addr = vm_unmapped_area(&info); /* --- a/arch/s390/mm/mmap.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/s390/mm/mmap.c @@ -86,7 +86,7 @@ unsigned long arch_get_unmapped_area(str { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (len > TASK_SIZE - mmap_min_addr) return -ENOMEM; @@ -102,7 +102,6 @@ unsigned long arch_get_unmapped_area(str goto check_asce_limit; } - info.flags = 0; info.length = len; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; @@ -122,7 +121,7 @@ unsigned long arch_get_unmapped_area_top { struct vm_area_struct *vma; struct mm_struct *mm = current->mm; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; /* requested length too big for entire address space */ if (len > TASK_SIZE - mmap_min_addr) --- a/arch/sh/mm/mmap.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/sh/mm/mmap.c @@ -57,7 +57,7 @@ unsigned long arch_get_unmapped_area(str struct mm_struct *mm = current->mm; struct vm_area_struct *vma; int do_colour_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate @@ -88,7 +88,6 @@ unsigned long arch_get_unmapped_area(str return addr; } - info.flags = 0; info.length = len; info.low_limit = TASK_UNMAPPED_BASE; info.high_limit = TASK_SIZE; @@ -106,7 +105,7 @@ arch_get_unmapped_area_topdown(struct fi struct mm_struct *mm = current->mm; unsigned long addr = addr0; int do_colour_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate --- a/arch/sparc/kernel/sys_sparc_32.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/sparc/kernel/sys_sparc_32.c @@ -41,7 +41,7 @@ SYSCALL_DEFINE0(getpagesize) unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate @@ -59,7 +59,6 @@ unsigned long arch_get_unmapped_area(str if (!addr) addr = TASK_UNMAPPED_BASE; - info.flags = 0; info.length = len; info.low_limit = addr; info.high_limit = TASK_SIZE; --- a/arch/sparc/kernel/sys_sparc_64.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/sparc/kernel/sys_sparc_64.c @@ -93,7 +93,7 @@ unsigned long arch_get_unmapped_area(str struct vm_area_struct * vma; unsigned long task_size = TASK_SIZE; int do_color_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate @@ -126,7 +126,6 @@ unsigned long arch_get_unmapped_area(str return addr; } - info.flags = 0; info.length = len; info.low_limit = TASK_UNMAPPED_BASE; info.high_limit = min(task_size, VA_EXCLUDE_START); @@ -154,7 +153,7 @@ arch_get_unmapped_area_topdown(struct fi unsigned long task_size = STACK_TOP32; unsigned long addr = addr0; int do_color_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; /* This should only ever run for 32-bit processes. */ BUG_ON(!test_thread_flag(TIF_32BIT)); --- a/arch/sparc/mm/hugetlbpage.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/sparc/mm/hugetlbpage.c @@ -31,17 +31,15 @@ static unsigned long hugetlb_get_unmappe { struct hstate *h = hstate_file(filp); unsigned long task_size = TASK_SIZE; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (test_thread_flag(TIF_32BIT)) task_size = STACK_TOP32; - info.flags = 0; info.length = len; info.low_limit = TASK_UNMAPPED_BASE; info.high_limit = min(task_size, VA_EXCLUDE_START); info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; addr = vm_unmapped_area(&info); if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) { @@ -63,7 +61,7 @@ hugetlb_get_unmapped_area_topdown(struct struct hstate *h = hstate_file(filp); struct mm_struct *mm = current->mm; unsigned long addr = addr0; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; /* This should only ever run for 32-bit processes. */ BUG_ON(!test_thread_flag(TIF_32BIT)); @@ -73,7 +71,6 @@ hugetlb_get_unmapped_area_topdown(struct info.low_limit = PAGE_SIZE; info.high_limit = mm->mmap_base; info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; addr = vm_unmapped_area(&info); /* --- a/arch/x86/kernel/sys_x86_64.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/x86/kernel/sys_x86_64.c @@ -118,7 +118,7 @@ arch_get_unmapped_area(struct file *filp { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; unsigned long begin, end; if (flags & MAP_FIXED) @@ -137,11 +137,9 @@ arch_get_unmapped_area(struct file *filp return addr; } - info.flags = 0; info.length = len; info.low_limit = begin; info.high_limit = end; - info.align_mask = 0; info.align_offset = pgoff << PAGE_SHIFT; if (filp) { info.align_mask = get_align_mask(); @@ -158,7 +156,7 @@ arch_get_unmapped_area_topdown(struct fi struct vm_area_struct *vma; struct mm_struct *mm = current->mm; unsigned long addr = addr0; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; /* requested length too big for entire address space */ if (len > TASK_SIZE) @@ -203,7 +201,6 @@ get_unmapped_area: if (addr > DEFAULT_MAP_WINDOW && !in_32bit_syscall()) info.high_limit += TASK_SIZE_MAX - DEFAULT_MAP_WINDOW; - info.align_mask = 0; info.align_offset = pgoff << PAGE_SHIFT; if (filp) { info.align_mask = get_align_mask(); --- a/arch/x86/mm/hugetlbpage.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/arch/x86/mm/hugetlbpage.c @@ -25,9 +25,8 @@ static unsigned long hugetlb_get_unmappe unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; - info.flags = 0; info.length = len; info.low_limit = get_mmap_base(1); @@ -39,7 +38,6 @@ static unsigned long hugetlb_get_unmappe task_size_32bit() : task_size_64bit(addr > DEFAULT_MAP_WINDOW); info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; return vm_unmapped_area(&info); } @@ -48,7 +46,7 @@ static unsigned long hugetlb_get_unmappe unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; info.flags = VM_UNMAPPED_AREA_TOPDOWN; info.length = len; @@ -63,7 +61,6 @@ static unsigned long hugetlb_get_unmappe info.high_limit += TASK_SIZE_MAX - DEFAULT_MAP_WINDOW; info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; addr = vm_unmapped_area(&info); /* --- a/fs/hugetlbfs/inode.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/fs/hugetlbfs/inode.c @@ -176,14 +176,12 @@ hugetlb_get_unmapped_area_bottomup(struc unsigned long len, unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; - info.flags = 0; info.length = len; info.low_limit = current->mm->mmap_base; info.high_limit = arch_get_mmap_end(addr, len, flags); info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; return vm_unmapped_area(&info); } @@ -192,14 +190,13 @@ hugetlb_get_unmapped_area_topdown(struct unsigned long len, unsigned long pgoff, unsigned long flags) { struct hstate *h = hstate_file(file); - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; info.flags = VM_UNMAPPED_AREA_TOPDOWN; info.length = len; info.low_limit = PAGE_SIZE; info.high_limit = arch_get_mmap_base(addr, current->mm->mmap_base); info.align_mask = PAGE_MASK & ~huge_page_mask(h); - info.align_offset = 0; addr = vm_unmapped_area(&info); /* --- a/mm/mmap.c~treewide-use-initializer-for-struct-vm_unmapped_area_info +++ a/mm/mmap.c @@ -1704,7 +1704,7 @@ generic_get_unmapped_area(struct file *f { struct mm_struct *mm = current->mm; struct vm_area_struct *vma, *prev; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; const unsigned long mmap_end = arch_get_mmap_end(addr, len, flags); if (len > mmap_end - mmap_min_addr) @@ -1722,12 +1722,9 @@ generic_get_unmapped_area(struct file *f return addr; } - info.flags = 0; info.length = len; info.low_limit = mm->mmap_base; info.high_limit = mmap_end; - info.align_mask = 0; - info.align_offset = 0; return vm_unmapped_area(&info); } @@ -1752,7 +1749,7 @@ generic_get_unmapped_area_topdown(struct { struct vm_area_struct *vma, *prev; struct mm_struct *mm = current->mm; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; const unsigned long mmap_end = arch_get_mmap_end(addr, len, flags); /* requested length too big for entire address space */ @@ -1776,8 +1773,6 @@ generic_get_unmapped_area_topdown(struct info.length = len; info.low_limit = PAGE_SIZE; info.high_limit = arch_get_mmap_base(addr, mm->mmap_base); - info.align_mask = 0; - info.align_offset = 0; addr = vm_unmapped_area(&info); /* _ Patches currently in -mm which might be from rick.p.edgecombe@intel.com are proc-refactor-pde_get_unmapped_area-as-prep.patch mm-switch-mm-get_unmapped_area-to-a-flag.patch mm-introduce-arch_get_unmapped_area_vmflags.patch mm-remove-export-for-get_unmapped_area.patch mm-use-get_unmapped_area_vmflags.patch thp-add-thp_get_unmapped_area_vmflags.patch csky-use-initializer-for-struct-vm_unmapped_area_info.patch parisc-use-initializer-for-struct-vm_unmapped_area_info.patch powerpc-use-initializer-for-struct-vm_unmapped_area_info.patch treewide-use-initializer-for-struct-vm_unmapped_area_info.patch mm-take-placement-mappings-gap-into-account.patch x86-mm-implement-have_arch_unmapped_area_vmflags.patch x86-mm-care-about-shadow-stack-guard-gap-during-placement.patch selftests-x86-add-placement-guard-gap-test-for-shstk.patch