1 files changed, 51 insertions, 2 deletions

diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 379f78556055..ae0e25f5a70e 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -519,9 +519,58 @@ do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
         arm_notify_die("", regs, &info, fsr, 0);
 }
 
+
+static struct fsr_info ifsr_info[] = {
+        { do_bad,               SIGBUS,  0,             "unknown 0"                        },
+        { do_bad,               SIGBUS,  0,             "unknown 1"                        },
+        { do_bad,               SIGBUS,  0,             "debug event"                      },
+        { do_bad,               SIGSEGV, SEGV_ACCERR,   "section access flag fault"        },
+        { do_bad,               SIGBUS,  0,             "unknown 4"                        },
+        { do_translation_fault, SIGSEGV, SEGV_MAPERR,   "section translation fault"        },
+        { do_bad,               SIGSEGV, SEGV_ACCERR,   "page access flag fault"           },
+        { do_page_fault,        SIGSEGV, SEGV_MAPERR,   "page translation fault"           },
+        { do_bad,               SIGBUS,  0,             "external abort on non-linefetch"  },
+        { do_bad,               SIGSEGV, SEGV_ACCERR,   "section domain fault"             },
+        { do_bad,               SIGBUS,  0,             "unknown 10"                       },
+        { do_bad,               SIGSEGV, SEGV_ACCERR,   "page domain fault"                },
+        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
+        { do_sect_fault,        SIGSEGV, SEGV_ACCERR,   "section permission fault"         },
+        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
+        { do_page_fault,        SIGSEGV, SEGV_ACCERR,   "page permission fault"            },
+        { do_bad,               SIGBUS,  0,             "unknown 16"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 17"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 18"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 19"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 20"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 21"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 22"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 23"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 24"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 25"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 26"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 27"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 28"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 29"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 30"                       },
+        { do_bad,               SIGBUS,  0,             "unknown 31"                       },
+};
+
 asmlinkage void __exception
-do_PrefetchAbort(unsigned long addr, struct pt_regs *regs)
+do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs)
 {
-        do_translation_fault(addr, FSR_LNX_PF, regs);
+        const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr);
+        struct siginfo info;
+
+        if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
+                return;
+
+        printk(KERN_ALERT "Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
+                inf->name, ifsr, addr);
+
+        info.si_signo = inf->sig;
+        info.si_errno = 0;
+        info.si_code  = inf->code;
+        info.si_addr  = (void __user *)addr;
+        arm_notify_die("", regs, &info, ifsr, 0);
 }