Merge branch 'linus' into irq/core

Merge reason: update to almost-final-.36

Signed-off-by: Ingo Molnar <mingo@elte.hu>

9 files changed, 40 insertions, 21 deletions

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 1decafbb6b1a..72206cf5c6cf 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -931,6 +931,7 @@ static inline int
 remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base)
 {
         if (hrtimer_is_queued(timer)) {
+                unsigned long state;
                 int reprogram;
 
                 /*
@@ -944,8 +945,13 @@ remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base)
                 debug_deactivate(timer);
                 timer_stats_hrtimer_clear_start_info(timer);
                 reprogram = base->cpu_base == &__get_cpu_var(hrtimer_bases);
-                __remove_hrtimer(timer, base, HRTIMER_STATE_INACTIVE,
-                                 reprogram);
+                /*
+                 * We must preserve the CALLBACK state flag here,
+                 * otherwise we could move the timer base in
+                 * switch_hrtimer_base.
+                 */
+                state = timer->state & HRTIMER_STATE_CALLBACK;
+                __remove_hrtimer(timer, base, state, reprogram);
                 return 1;
         }
         return 0;
@@ -1231,6 +1237,9 @@ static void __run_hrtimer(struct hrtimer *timer, ktime_t *now)
                 BUG_ON(timer->state != HRTIMER_STATE_CALLBACK);
                 enqueue_hrtimer(timer, base);
         }
+
+        WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK));
+
         timer->state &= ~HRTIMER_STATE_CALLBACK;
 }
 
diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index 6b5580c57644..01a0700e873f 100644
--- a/kernel/kfifo.c
+++ b/kernel/kfifo.c
@@ -365,8 +365,6 @@ static unsigned int setup_sgl(struct __kfifo *fifo, struct scatterlist *sgl,
         n = setup_sgl_buf(sgl, fifo->data + off, nents, l);
         n += setup_sgl_buf(sgl + n, fifo->data, nents - n, len - l);
 
-        if (n)
-                sg_mark_end(sgl + n - 1);
         return n;
 }
 
diff --git a/kernel/module.c b/kernel/module.c
index d0b5f8db11b4..ccd641991842 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1537,6 +1537,7 @@ static int __unlink_module(void *_mod)
 {
         struct module *mod = _mod;
         list_del(&mod->list);
+        module_bug_cleanup(mod);
         return 0;
 }
 
@@ -2625,6 +2626,7 @@ static struct module *load_module(void __user *umod,
         if (err < 0)
                 goto ddebug;
 
+        module_bug_finalize(info.hdr, info.sechdrs, mod);
         list_add_rcu(&mod->list, &modules);
         mutex_unlock(&module_mutex);
 
@@ -2650,6 +2652,8 @@ static struct module *load_module(void __user *umod,
         mutex_lock(&module_mutex);
         /* Unlink carefully: kallsyms could be walking list. */
         list_del_rcu(&mod->list);
+        module_bug_cleanup(mod);
+
  ddebug:
         if (!mod->taints)
                 dynamic_debug_remove(info.debug);
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index db5b56064687..b98bed3d8182 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -2202,15 +2202,13 @@ static void perf_event_for_each(struct perf_event *event,
 static int perf_event_period(struct perf_event *event, u64 __user *arg)
 {
         struct perf_event_context *ctx = event->ctx;
-        unsigned long size;
         int ret = 0;
         u64 value;
 
         if (!event->attr.sample_period)
                 return -EINVAL;
 
-        size = copy_from_user(&value, arg, sizeof(value));
-        if (size != sizeof(value))
+        if (copy_from_user(&value, arg, sizeof(value)))
                 return -EFAULT;
 
         if (!value)
diff --git a/kernel/signal.c b/kernel/signal.c
index bded65187780..919562c3d6b7 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2215,6 +2215,14 @@ int copy_siginfo_to_user(siginfo_t __user *to, siginfo_t *from)
 #ifdef __ARCH_SI_TRAPNO
                 err |= __put_user(from->si_trapno, &to->si_trapno);
 #endif
+#ifdef BUS_MCEERR_AO
+                /* 
+                 * Other callers might not initialize the si_lsb field,
+                 * so check explicitely for the right codes here.
+                 */
+                if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)
+                        err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
+#endif
                 break;
         case __SI_CHLD:
                 err |= __put_user(from->si_pid, &to->si_pid);
diff --git a/kernel/smp.c b/kernel/smp.c
index 75c970c715d3..ed6aacfcb7ef 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -365,9 +365,10 @@ call:
 EXPORT_SYMBOL_GPL(smp_call_function_any);
 
 /**
- * __smp_call_function_single(): Run a function on another CPU
+ * __smp_call_function_single(): Run a function on a specific CPU
  * @cpu: The CPU to run on.
  * @data: Pre-allocated and setup data structure
+ * @wait: If true, wait until function has completed on specified CPU.
  *
  * Like smp_call_function_single(), but allow caller to pass in a
  * pre-allocated data structure. Useful for embedding @data inside
@@ -376,8 +377,10 @@ EXPORT_SYMBOL_GPL(smp_call_function_any);
 void __smp_call_function_single(int cpu, struct call_single_data *data,
                                 int wait)
 {
-        csd_lock(data);
+        unsigned int this_cpu;
+        unsigned long flags;
 
+        this_cpu = get_cpu();
         /*
          * Can deadlock when called with interrupts disabled.
          * We allow cpu's that are not yet online though, as no one else can
@@ -387,7 +390,15 @@ void __smp_call_function_single(int cpu, struct call_single_data *data,
         WARN_ON_ONCE(cpu_online(smp_processor_id()) && wait && irqs_disabled()
                      && !oops_in_progress);
 
-        generic_exec_single(cpu, data, wait);
+        if (cpu == this_cpu) {
+                local_irq_save(flags);
+                data->func(data->info);
+                local_irq_restore(flags);
+        } else {
+                csd_lock(data);
+                generic_exec_single(cpu, data, wait);
+        }
+        put_cpu();
 }
 
 /**
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f88552c6d227..3a45c224770f 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2485,7 +2485,7 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int
                 kbuf[left] = 0;
         }
 
-        for (; left && vleft--; i++, min++, max++, first=0) {
+        for (; left && vleft--; i++, first = 0) {
                 unsigned long val;
 
                 if (write) {
diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c
index 04cdcf72c827..10b90d8a03c4 100644
--- a/kernel/sysctl_check.c
+++ b/kernel/sysctl_check.c
@@ -143,15 +143,6 @@ int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table)
                                 if (!table->maxlen)
                                         set_fail(&fail, table, "No maxlen");
                         }
-                        if ((table->proc_handler == proc_doulongvec_minmax) ||
-                            (table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) {
-                                if (table->maxlen > sizeof (unsigned long)) {
-                                        if (!table->extra1)
-                                                set_fail(&fail, table, "No min");
-                                        if (!table->extra2)
-                                                set_fail(&fail, table, "No max");
-                                }
-                        }
 #ifdef CONFIG_PROC_SYSCTL
                         if (table->procname && !table->proc_handler)
                                 set_fail(&fail, table, "No proc_handler");
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 492197e2f86c..bca96377fd4e 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -405,7 +405,7 @@ static inline int test_time_stamp(u64 delta)
 #define BUF_MAX_DATA_SIZE (BUF_PAGE_SIZE - (sizeof(u32) * 2))
 
 /* Max number of timestamps that can fit on a page */
-#define RB_TIMESTAMPS_PER_PAGE  (BUF_PAGE_SIZE / RB_LEN_TIME_STAMP)
+#define RB_TIMESTAMPS_PER_PAGE  (BUF_PAGE_SIZE / RB_LEN_TIME_EXTEND)
 
 int ring_buffer_print_page_header(struct trace_seq *s)
 {