Signed-off-by: Cyrill Gorcunov Cc: Kees Cook Cc: Tejun Heo Cc: Andrew Morton Cc: Andrew Vagin Cc: Eric W. Biederman Cc: H. Peter Anvin Cc: Serge Hallyn Cc: Pavel Emelyanov Cc: Vasiliy Kulikov Cc: KAMEZAWA Hiroyuki Cc: Michael Kerrisk Cc: Julien Tinnes --- kernel/sys.c | 10 ++++------ mm/mmap.c | 7 +++---- 2 files changed, 7 insertions(+), 10 deletions(-) Index: linux-2.6.git/kernel/sys.c =================================================================== --- linux-2.6.git.orig/kernel/sys.c +++ linux-2.6.git/kernel/sys.c @@ -1733,9 +1733,8 @@ static int prctl_set_mm(int opt, unsigne if (addr <= mm->end_data) goto out; - if (rlim < RLIM_INFINITY && - (mm->brk - addr) + - (mm->end_data - mm->start_data) > rlim) + if (may_adjust_brk(rlim, mm->brk, addr, + mm->end_data, mm->start_data)) goto out; mm->start_brk = addr; @@ -1745,9 +1744,8 @@ static int prctl_set_mm(int opt, unsigne if (addr <= mm->end_data) goto out; - if (rlim < RLIM_INFINITY && - (addr - mm->start_brk) + - (mm->end_data - mm->start_data) > rlim) + if (may_adjust_brk(rlim, addr, mm->start_brk, + mm->end_data, mm->start_data)) goto out; mm->brk = addr; Index: linux-2.6.git/mm/mmap.c =================================================================== --- linux-2.6.git.orig/mm/mmap.c +++ linux-2.6.git/mm/mmap.c @@ -263,7 +263,7 @@ static unsigned long do_brk(unsigned lon SYSCALL_DEFINE1(brk, unsigned long, brk) { - unsigned long rlim, retval; + unsigned long retval; unsigned long newbrk, oldbrk; struct mm_struct *mm = current->mm; unsigned long min_brk; @@ -293,9 +293,8 @@ SYSCALL_DEFINE1(brk, unsigned long, brk) * segment grow beyond its set limit the in case where the limit is * not page aligned -Ram Gupta */ - rlim = rlimit(RLIMIT_DATA); - if (rlim < RLIM_INFINITY && (brk - mm->start_brk) + - (mm->end_data - mm->start_data) > rlim) + if (may_adjust_brk(rlimit(RLIMIT_DATA), brk, mm->start_brk, + mm->end_data, mm->start_data)) goto out; newbrk = PAGE_ALIGN(brk); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/