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Date: Thu, 22 Mar 2018 19:36:38 +0300 Message-Id: <1521736598-12812-3-git-send-email-blackzert@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521736598-12812-1-git-send-email-blackzert@gmail.com> References: <1521736598-12812-1-git-send-email-blackzert@gmail.com> Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Ilya Smith --- arch/alpha/kernel/osf_sys.c | 1 + arch/arc/mm/mmap.c | 1 + arch/arm/mm/mmap.c | 2 ++ arch/frv/mm/elf-fdpic.c | 1 + arch/ia64/kernel/sys_ia64.c | 1 + arch/ia64/mm/hugetlbpage.c | 1 + arch/metag/mm/hugetlbpage.c | 1 + arch/mips/mm/mmap.c | 1 + arch/parisc/kernel/sys_parisc.c | 2 ++ arch/powerpc/mm/hugetlbpage-radix.c | 1 + arch/powerpc/mm/mmap.c | 2 ++ arch/powerpc/mm/slice.c | 2 ++ arch/s390/mm/mmap.c | 2 ++ arch/sh/mm/mmap.c | 2 ++ arch/sparc/kernel/sys_sparc_32.c | 1 + arch/sparc/kernel/sys_sparc_64.c | 2 ++ arch/sparc/mm/hugetlbpage.c | 2 ++ arch/tile/mm/hugetlbpage.c | 2 ++ arch/x86/kernel/sys_x86_64.c | 4 ++++ arch/x86/mm/hugetlbpage.c | 4 ++++ fs/hugetlbfs/inode.c | 1 + include/linux/mm.h | 1 + mm/mmap.c | 3 ++- 23 files changed, 39 insertions(+), 1 deletion(-) diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index fa1a392..0ab9f31 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -1301,6 +1301,7 @@ arch_get_unmapped_area_1(unsigned long addr, unsigned long len, info.high_limit = limit; info.align_mask = 0; info.align_offset = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/arc/mm/mmap.c b/arch/arc/mm/mmap.c index 2e13683..45225fc 100644 --- a/arch/arc/mm/mmap.c +++ b/arch/arc/mm/mmap.c @@ -75,5 +75,6 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, info.high_limit = TASK_SIZE; info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c index eb1de66..1eb660c 100644 --- a/arch/arm/mm/mmap.c +++ b/arch/arm/mm/mmap.c @@ -101,6 +101,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, info.high_limit = TASK_SIZE; info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; return vm_unmapped_area(&info); } @@ -152,6 +153,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, info.high_limit = mm->mmap_base; info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; addr = vm_unmapped_area(&info); /* diff --git a/arch/frv/mm/elf-fdpic.c b/arch/frv/mm/elf-fdpic.c index 46aa289..a2ce2ce 100644 --- a/arch/frv/mm/elf-fdpic.c +++ b/arch/frv/mm/elf-fdpic.c @@ -86,6 +86,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi info.high_limit = (current->mm->start_stack - 0x00200000); info.align_mask = 0; info.align_offset = 0; + info.random_shift = 0; addr = vm_unmapped_area(&info); if (!(addr & ~PAGE_MASK)) goto success; diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c index 085adfc..15fa4fb 100644 --- a/arch/ia64/kernel/sys_ia64.c +++ b/arch/ia64/kernel/sys_ia64.c @@ -64,6 +64,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len info.high_limit = TASK_SIZE; info.align_mask = align_mask; info.align_offset = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c index d16e419..ec7822d 100644 --- a/arch/ia64/mm/hugetlbpage.c +++ b/arch/ia64/mm/hugetlbpage.c @@ -162,6 +162,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u info.high_limit = HPAGE_REGION_BASE + RGN_MAP_LIMIT; info.align_mask = PAGE_MASK & (HPAGE_SIZE - 1); info.align_offset = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c index 012ee4c..babd325 100644 --- a/arch/metag/mm/hugetlbpage.c +++ b/arch/metag/mm/hugetlbpage.c @@ -191,6 +191,7 @@ hugetlb_get_unmapped_area_new_pmd(unsigned long len) info.high_limit = TASK_SIZE; info.align_mask = PAGE_MASK & HUGEPT_MASK; info.align_offset = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c index 33d3251..5a3d384 100644 --- a/arch/mips/mm/mmap.c +++ b/arch/mips/mm/mmap.c @@ -122,6 +122,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, info.flags = 0; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index 378a754..abf4b05 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -130,6 +130,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, info.high_limit = mmap_upper_limit(); info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0; info.align_offset = shared_align_offset(last_mmap, pgoff); + info.random_shift = 0; addr = vm_unmapped_area(&info); found_addr: @@ -192,6 +193,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, info.high_limit = mm->mmap_base; info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0; info.align_offset = shared_align_offset(last_mmap, pgoff); + info.random_shift = 0; addr = vm_unmapped_area(&info); if (!(addr & ~PAGE_MASK)) goto found_addr; diff --git a/arch/powerpc/mm/hugetlbpage-radix.c b/arch/powerpc/mm/hugetlbpage-radix.c index 2486bee..1d61a88 100644 --- a/arch/powerpc/mm/hugetlbpage-radix.c +++ b/arch/powerpc/mm/hugetlbpage-radix.c @@ -87,6 +87,7 @@ radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, info.high_limit = mm->mmap_base + (high_limit - DEFAULT_MAP_WINDOW); info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c index d503f34..7fe98c7 100644 --- a/arch/powerpc/mm/mmap.c +++ b/arch/powerpc/mm/mmap.c @@ -136,6 +136,7 @@ radix__arch_get_unmapped_area(struct file *filp, unsigned long addr, info.low_limit = mm->mmap_base; info.high_limit = high_limit; info.align_mask = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } @@ -180,6 +181,7 @@ radix__arch_get_unmapped_area_topdown(struct file *filp, info.low_limit = max(PAGE_SIZE, mmap_min_addr); info.high_limit = mm->mmap_base + (high_limit - DEFAULT_MAP_WINDOW); info.align_mask = 0; + info.random_shift = 0; addr = vm_unmapped_area(&info); if (!(addr & ~PAGE_MASK)) diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c index 23ec2c5..2005845 100644 --- a/arch/powerpc/mm/slice.c +++ b/arch/powerpc/mm/slice.c @@ -284,6 +284,7 @@ static unsigned long slice_find_area_bottomup(struct mm_struct *mm, info.length = len; info.align_mask = PAGE_MASK & ((1ul << pshift) - 1); info.align_offset = 0; + info.random_shift = 0; addr = TASK_UNMAPPED_BASE; /* @@ -330,6 +331,7 @@ static unsigned long slice_find_area_topdown(struct mm_struct *mm, info.length = len; info.align_mask = PAGE_MASK & ((1ul << pshift) - 1); info.align_offset = 0; + info.random_shift = 0; addr = mm->mmap_base; /* diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c index 831bdcf..141823f 100644 --- a/arch/s390/mm/mmap.c +++ b/arch/s390/mm/mmap.c @@ -95,6 +95,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, info.length = len; info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; + info.random_shift = 0; if (filp || (flags & MAP_SHARED)) info.align_mask = MMAP_ALIGN_MASK << PAGE_SHIFT; else @@ -146,6 +147,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, info.length = len; info.low_limit = max(PAGE_SIZE, mmap_min_addr); info.high_limit = mm->mmap_base; + info.random_shift = 0; if (filp || (flags & MAP_SHARED)) info.align_mask = MMAP_ALIGN_MASK << PAGE_SHIFT; else diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c index 6a1a129..d9206c2 100644 --- a/arch/sh/mm/mmap.c +++ b/arch/sh/mm/mmap.c @@ -74,6 +74,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, info.high_limit = TASK_SIZE; info.align_mask = do_colour_align ? (PAGE_MASK & shm_align_mask) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; return vm_unmapped_area(&info); } @@ -124,6 +125,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, info.high_limit = mm->mmap_base; info.align_mask = do_colour_align ? (PAGE_MASK & shm_align_mask) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; addr = vm_unmapped_area(&info); /* diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index 990703b7..af664ba3 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -66,6 +66,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi info.align_mask = (flags & MAP_SHARED) ? (PAGE_MASK & (SHMLBA - 1)) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; return vm_unmapped_area(&info); } diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 55416db..3d12e3d 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -131,6 +131,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi info.high_limit = min(task_size, VA_EXCLUDE_START); info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; addr = vm_unmapped_area(&info); if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) { @@ -194,6 +195,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, info.high_limit = mm->mmap_base; info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = 0; addr = vm_unmapped_area(&info); /* diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c index 0112d69..6d0c032 100644 --- a/arch/sparc/mm/hugetlbpage.c +++ b/arch/sparc/mm/hugetlbpage.c @@ -43,6 +43,7 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp, info.high_limit = min(task_size, VA_EXCLUDE_START); info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = 0; addr = vm_unmapped_area(&info); if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) { @@ -75,6 +76,7 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, info.high_limit = mm->mmap_base; info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = 0; addr = vm_unmapped_area(&info); /* diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c index 0986d42..2b3a9b6 100644 --- a/arch/tile/mm/hugetlbpage.c +++ b/arch/tile/mm/hugetlbpage.c @@ -176,6 +176,7 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, info.high_limit = TASK_SIZE; info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } @@ -193,6 +194,7 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, info.high_limit = current->mm->mmap_base; info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = 0; addr = vm_unmapped_area(&info); /* diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c index 676774b..0eda047 100644 --- a/arch/x86/kernel/sys_x86_64.c +++ b/arch/x86/kernel/sys_x86_64.c @@ -163,6 +163,8 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, info.high_limit = end; info.align_mask = 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = in_compat_syscall() ? + 256 : 0x1000000; if (filp) { info.align_mask = get_align_mask(); info.align_offset += get_align_bits(); @@ -224,6 +226,8 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, info.align_mask = 0; info.align_offset = pgoff << PAGE_SHIFT; + info.random_shift = in_compat_syscall() ? + 256 : 0x1000000; if (filp) { info.align_mask = get_align_mask(); info.align_offset += get_align_bits(); diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c index 00b2966..f4f6436 100644 --- a/arch/x86/mm/hugetlbpage.c +++ b/arch/x86/mm/hugetlbpage.c @@ -97,6 +97,8 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file, info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = in_compat_syscall() ? + 256 : 0x1000000; return vm_unmapped_area(&info); } @@ -121,6 +123,8 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file, info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = in_compat_syscall() ? + 256 : 0x1000000; addr = vm_unmapped_area(&info); /* diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 8fe1b0a..83e962e 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -200,6 +200,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, info.high_limit = TASK_SIZE; info.align_mask = PAGE_MASK & ~huge_page_mask(h); info.align_offset = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } #endif diff --git a/include/linux/mm.h b/include/linux/mm.h index c716257..f869e6d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2252,6 +2252,7 @@ struct vm_unmapped_area_info { unsigned long high_limit; unsigned long align_mask; unsigned long align_offset; + unsigned long random_shift; }; #ifndef CONFIG_MMU diff --git a/mm/mmap.c b/mm/mmap.c index ba9cebb..425fa09 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1938,7 +1938,7 @@ unsigned long unmapped_area_random(struct vm_unmapped_area_info *info) if (gap_end == gap_start) return gap_start; addr = entropy[1] % (min((gap_end - gap_start) >> PAGE_SHIFT, - 0x10000UL)); + info->random_shift)); addr = gap_end - (addr << PAGE_SHIFT); addr += (info->align_offset - addr) & info->align_mask; return addr; @@ -2186,6 +2186,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, info.low_limit = mm->mmap_base; info.high_limit = TASK_SIZE; info.align_mask = 0; + info.random_shift = 0; return vm_unmapped_area(&info); } #endif