move die notifier handling to common code

[firefly-linux-kernel-4.4.55.git] / arch / powerpc / mm / fault.c

diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 78a0d59903ee69d2b8ac96de20e18c17fd5f9206..bec0cce79a78f6c1db3671c611ae83a7230170a0 100644 (file)
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -28,6 +28,7 @@
 #include <linux/highmem.h>
 #include <linux/module.h>
 #include <linux/kprobes.h>
+#include <linux/kdebug.h>
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -36,7 +37,6 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/tlbflush.h>
-#include <asm/kdebug.h>
 #include <asm/siginfo.h>
 
 #ifdef CONFIG_KPROBES
@@ -333,7 +333,7 @@ good_area:
                /* protection fault */
                if (error_code & 0x08000000)
                        goto bad_area;
-               if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+               if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))
                        goto bad_area;
        }
 
@@ -386,7 +386,7 @@ bad_area_nosemaphore:
  */
 out_of_memory:
        up_read(&mm->mmap_sem);
-       if (current->pid == 1) {
+       if (is_init(current)) {
                yield();
                down_read(&mm->mmap_sem);
                goto survive;
@@ -426,18 +426,21 @@ void bad_page_fault(struct pt_regs *regs, unsigned long address, int sig)
 
        /* kernel has accessed a bad area */
 
-       printk(KERN_ALERT "Unable to handle kernel paging request for ");
        switch (regs->trap) {
-               case 0x300:
-               case 0x380:
-                       printk("data at address 0x%08lx\n", regs->dar);
-                       break;
-               case 0x400:
-               case 0x480:
-                       printk("instruction fetch\n");
-                       break;
-               default:
-                       printk("unknown fault\n");
+       case 0x300:
+       case 0x380:
+               printk(KERN_ALERT "Unable to handle kernel paging request for "
+                       "data at address 0x%08lx\n", regs->dar);
+               break;
+       case 0x400:
+       case 0x480:
+               printk(KERN_ALERT "Unable to handle kernel paging request for "
+                       "instruction fetch\n");
+               break;
+       default:
+               printk(KERN_ALERT "Unable to handle kernel paging request for "
+                       "unknown fault\n");
+               break;
        }
        printk(KERN_ALERT "Faulting instruction address: 0x%08lx\n",
                regs->nip);