wifi: create a new patch 'drivers/net/wireless/rockchip_wlan' for porting drivers.

[firefly-linux-kernel-4.4.55.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index ffd7a813ad3d06ee1e1de4e996c72282c24e7039..bb60cda5ee30765a171f373537212134d979f139 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -607,7 +607,7 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
                return -ENOMEM;
 
        lru_add_drain();
-       tlb_gather_mmu(&tlb, mm, 0);
+       tlb_gather_mmu(&tlb, mm, old_start, old_end);
        if (new_end > old_start) {
                /*
                 * when the old and new regions overlap clear from new_end.
@@ -624,7 +624,7 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
                free_pgd_range(&tlb, old_start, old_end, new_end,
                        vma->vm_next ? vma->vm_next->vm_start : USER_PGTABLES_CEILING);
        }
-       tlb_finish_mmu(&tlb, new_end, old_end);
+       tlb_finish_mmu(&tlb, old_start, old_end);
 
        /*
         * Shrink the vma to just the new range.  Always succeeds.
@@ -1669,6 +1669,12 @@ int __get_dumpable(unsigned long mm_flags)
        return (ret > SUID_DUMP_USER) ? SUID_DUMP_ROOT : ret;
 }
 
+/*
+ * This returns the actual value of the suid_dumpable flag. For things
+ * that are using this for checking for privilege transitions, it must
+ * test against SUID_DUMP_USER rather than treating it as a boolean
+ * value.
+ */
 int get_dumpable(struct mm_struct *mm)
 {
        return __get_dumpable(mm->flags);