Merge branch 'security-fixes' into fixes

[linux-imx.git] / arch / arm / kernel / process.c

diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 16ed3f7c4980a8a3d2255780b57b9477638b0115..536c85fe72a838aafe3371e0280175b8cda2b452 100644 (file)
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -474,17 +474,18 @@ const char *arch_vma_name(struct vm_area_struct *vma)
                 "[sigpage]" : NULL;
 }
 
+static struct page *signal_page;
 extern struct page *get_signal_page(void);
 
 int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 {
        struct mm_struct *mm = current->mm;
-       struct page *page;
        unsigned long addr;
        int ret;
 
-       page = get_signal_page();
-       if (!page)
+       if (!signal_page)
+               signal_page = get_signal_page();
+       if (!signal_page)
                return -ENOMEM;
 
        down_write(&mm->mmap_sem);
@@ -496,7 +497,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 
        ret = install_special_mapping(mm, addr, PAGE_SIZE,
                VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC,
-               &page);
+               &signal_page);
 
        if (ret == 0)
                mm->context.sigpage = addr;