| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <E1NGzzv-0008Rt-4N@ZenIV.linux.org.uk> Date: Sat, 05 Dec 2009 19:08:51 +0000 From: Al Viro <viro@....linux.org.uk> To: linux-arch@...r.kernel.org Cc: torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org Subject: [RFC][PATCH 16/18] switch do_brk() to get_unmapped_area() Signed-off-by: Al Viro <viro@...iv.linux.org.uk> --- mm/mmap.c | 10 ++-------- 1 files changed, 2 insertions(+), 8 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index e92cbe5..f364677 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1989,20 +1989,14 @@ unsigned long do_brk(unsigned long addr, unsigned long len) if (!len) return addr; - if ((addr + len) > TASK_SIZE || (addr + len) < addr) - return -EINVAL; - - if (is_hugepage_only_range(mm, addr, len)) - return -EINVAL; - error = security_file_mmap(NULL, 0, 0, 0, addr, 1); if (error) return error; flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags; - error = arch_mmap_check(addr, len, flags); - if (error) + error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED | flags); + if (error & ~PAGE_MASK) return error; /* -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists