1 files changed, 12 insertions, 23 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 18cc4256225..ed41562909f 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -51,7 +51,7 @@
 static DEFINE_MUTEX(mce_read_mutex);
 
 #define rcu_dereference_check_mce(p) \
-        rcu_dereference_check((p), \
+        rcu_dereference_index_check((p), \
                               rcu_read_lock_sched_held() || \
                               lockdep_is_held(&mce_read_mutex))
 
@@ -107,8 +107,8 @@ EXPORT_SYMBOL_GPL(x86_mce_decoder_chain);
 static int default_decode_mce(struct notifier_block *nb, unsigned long val,
                                void *data)
 {
-        pr_emerg("No human readable MCE decoding support on this CPU type.\n");
-        pr_emerg("Run the message through 'mcelog --ascii' to decode.\n");
+        pr_emerg(HW_ERR "No human readable MCE decoding support on this CPU type.\n");
+        pr_emerg(HW_ERR "Run the message through 'mcelog --ascii' to decode.\n");
 
         return NOTIFY_STOP;
 }
@@ -211,11 +211,11 @@ void mce_log(struct mce *mce)
 
 static void print_mce(struct mce *m)
 {
-        pr_emerg("CPU %d: Machine Check Exception: %16Lx Bank %d: %016Lx\n",
+        pr_emerg(HW_ERR "CPU %d: Machine Check Exception: %Lx Bank %d: %016Lx\n",
                m->extcpu, m->mcgstatus, m->bank, m->status);
 
         if (m->ip) {
-                pr_emerg("RIP%s %02x:<%016Lx> ",
+                pr_emerg(HW_ERR "RIP%s %02x:<%016Lx> ",
                         !(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "",
                                 m->cs, m->ip);
 
@@ -224,14 +224,14 @@ static void print_mce(struct mce *m)
                 pr_cont("\n");
         }
 
-        pr_emerg("TSC %llx ", m->tsc);
+        pr_emerg(HW_ERR "TSC %llx ", m->tsc);
         if (m->addr)
                 pr_cont("ADDR %llx ", m->addr);
         if (m->misc)
                 pr_cont("MISC %llx ", m->misc);
 
         pr_cont("\n");
-        pr_emerg("PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x\n",
+        pr_emerg(HW_ERR "PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x\n",
                 m->cpuvendor, m->cpuid, m->time, m->socketid, m->apicid);
 
         /*
@@ -241,16 +241,6 @@ static void print_mce(struct mce *m)
         atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, m);
 }
 
-static void print_mce_head(void)
-{
-        pr_emerg("\nHARDWARE ERROR\n");
-}
-
-static void print_mce_tail(void)
-{
-        pr_emerg("This is not a software problem!\n");
-}
-
 #define PANIC_TIMEOUT 5 /* 5 seconds */
 
 static atomic_t mce_paniced;
@@ -291,7 +281,6 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
                 if (atomic_inc_return(&mce_fake_paniced) > 1)
                         return;
         }
-        print_mce_head();
         /* First print corrected ones that are still unlogged */
         for (i = 0; i < MCE_LOG_LEN; i++) {
                 struct mce *m = &mcelog.entry[i];
@@ -322,16 +311,15 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
                         apei_err = apei_write_mce(final);
         }
         if (cpu_missing)
-                printk(KERN_EMERG "Some CPUs didn't answer in synchronization\n");
-        print_mce_tail();
+                pr_emerg(HW_ERR "Some CPUs didn't answer in synchronization\n");
         if (exp)
-                printk(KERN_EMERG "Machine check: %s\n", exp);
+                pr_emerg(HW_ERR "Machine check: %s\n", exp);
         if (!fake_panic) {
                 if (panic_timeout == 0)
                         panic_timeout = mce_panic_timeout;
                 panic(msg);
         } else
-                printk(KERN_EMERG "Fake kernel panic: %s\n", msg);
+                pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg);
 }
 
 /* Support code for software error injection */
@@ -600,6 +588,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
                  */
                 if (!(flags & MCP_DONTLOG) && !mce_dont_log_ce) {
                         mce_log(&m);
+                        atomic_notifier_call_chain(&x86_mce_decoder_chain, 0, &m);
                         add_taint(TAINT_MACHINE_CHECK);
                 }
 
@@ -1220,7 +1209,7 @@ int mce_notify_irq(void)
                         schedule_work(&mce_trigger_work);
 
                 if (__ratelimit(&ratelimit))
-                        printk(KERN_INFO "Machine check events logged\n");
+                        pr_info(HW_ERR "Machine check events logged\n");
 
                 return 1;
         }