diff options
Diffstat (limited to 'arch/arm64/mm/mmap.c')
| -rw-r--r-- | arch/arm64/mm/mmap.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c index decccffb03ca..842c8a5fcd53 100644 --- a/arch/arm64/mm/mmap.c +++ b/arch/arm64/mm/mmap.c @@ -38,12 +38,12 @@ #define MIN_GAP (SZ_128M) #define MAX_GAP (STACK_TOP/6*5) -static int mmap_is_legacy(void) +static int mmap_is_legacy(struct rlimit *rlim_stack) { if (current->personality & ADDR_COMPAT_LAYOUT) return 1; - if (rlimit(RLIMIT_STACK) == RLIM_INFINITY) + if (rlim_stack->rlim_cur == RLIM_INFINITY) return 1; return sysctl_legacy_va_layout; @@ -62,9 +62,9 @@ unsigned long arch_mmap_rnd(void) return rnd << PAGE_SHIFT; } -static unsigned long mmap_base(unsigned long rnd) +static unsigned long mmap_base(unsigned long rnd, struct rlimit *rlim_stack) { - unsigned long gap = rlimit(RLIMIT_STACK); + unsigned long gap = rlim_stack->rlim_cur; unsigned long pad = (STACK_RND_MASK << PAGE_SHIFT) + stack_guard_gap; /* Values close to RLIM_INFINITY can overflow. */ @@ -83,7 +83,7 @@ static unsigned long mmap_base(unsigned long rnd) * This function, called very early during the creation of a new process VM * image, sets up which VM layout function to use: */ -void arch_pick_mmap_layout(struct mm_struct *mm) +void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack) { unsigned long random_factor = 0UL; @@ -94,11 +94,11 @@ void arch_pick_mmap_layout(struct mm_struct *mm) * Fall back to the standard layout if the personality bit is set, or * if the expected stack growth is unlimited: */ - if (mmap_is_legacy()) { + if (mmap_is_legacy(rlim_stack)) { mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; mm->get_unmapped_area = arch_get_unmapped_area; } else { - mm->mmap_base = mmap_base(random_factor); + mm->mmap_base = mmap_base(random_factor, rlim_stack); mm->get_unmapped_area = arch_get_unmapped_area_topdown; } } |