1 files changed, 29 insertions, 4 deletions

diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 5b101f6a5607..e247edbca68e 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -17,6 +17,7 @@
 #include <linux/interrupt.h>
 #include <linux/extable.h>
 #include <linux/uaccess.h>
+#include <linux/hugetlb.h>
 
 #include <asm/traps.h>
 
@@ -261,7 +262,7 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
         struct task_struct *tsk;
         struct mm_struct *mm;
         unsigned long acc_type;
-        int fault;
+        int fault = 0;
         unsigned int flags;
 
         if (faulthandler_disabled())
@@ -315,7 +316,8 @@ good_area:
                         goto out_of_memory;
                 else if (fault & VM_FAULT_SIGSEGV)
                         goto bad_area;
-                else if (fault & VM_FAULT_SIGBUS)
+                else if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON|
+                                  VM_FAULT_HWPOISON_LARGE))
                         goto bad_area;
                 BUG();
         }
@@ -352,8 +354,7 @@ bad_area:
 
         if (user_mode(regs)) {
                 struct siginfo si;
-
-                show_signal_msg(regs, code, address, tsk, vma);
+                unsigned int lsb = 0;
 
                 switch (code) {
                 case 15:        /* Data TLB miss fault/Data page fault */
@@ -386,6 +387,30 @@ bad_area:
                         si.si_code = (code == 26) ? SEGV_ACCERR : SEGV_MAPERR;
                         break;
                 }
+
+#ifdef CONFIG_MEMORY_FAILURE
+                if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) {
+                        printk(KERN_ERR
+        "MCE: Killing %s:%d due to hardware memory corruption fault at %08lx\n",
+                        tsk->comm, tsk->pid, address);
+                        si.si_signo = SIGBUS;
+                        si.si_code = BUS_MCEERR_AR;
+                }
+#endif
+
+                /*
+                 * Either small page or large page may be poisoned.
+                 * In other words, VM_FAULT_HWPOISON_LARGE and
+                 * VM_FAULT_HWPOISON are mutually exclusive.
+                 */
+                if (fault & VM_FAULT_HWPOISON_LARGE)
+                        lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault));
+                else if (fault & VM_FAULT_HWPOISON)
+                        lsb = PAGE_SHIFT;
+                else
+                        show_signal_msg(regs, code, address, tsk, vma);
+                si.si_addr_lsb = lsb;
+
                 si.si_errno = 0;
                 si.si_addr = (void __user *) address;
                 force_sig_info(si.si_signo, &si, current);