4 files changed, 17 insertions, 7 deletions

diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index ef10940e1af0..852b81967a37 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -194,7 +194,7 @@ static struct hw_breakpoint {
         unsigned long           addr;
         int                     len;
         int                     type;
-        struct perf_event       **pev;
+        struct perf_event       * __percpu *pev;
 } breakinfo[HBP_NUM];
 
 static unsigned long early_dr7;
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index c734f9b1263a..50590c7f2c01 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -194,10 +194,11 @@ static DECLARE_WORK(console_work, console_callback);
 int fg_console;
 int last_console;
 int want_console = -1;
-int saved_fg_console;
-int saved_last_console;
-int saved_want_console;
-int saved_vc_mode;
+static int saved_fg_console;
+static int saved_last_console;
+static int saved_want_console;
+static int saved_vc_mode;
+static int saved_console_blanked;
 
 /*
  * For each existing display, we have a pointer to console currently visible
@@ -3449,6 +3450,7 @@ int con_debug_enter(struct vc_data *vc)
         saved_last_console = last_console;
         saved_want_console = want_console;
         saved_vc_mode = vc->vc_mode;
+        saved_console_blanked = console_blanked;
         vc->vc_mode = KD_TEXT;
         console_blanked = 0;
         if (vc->vc_sw->con_debug_enter)
@@ -3492,6 +3494,7 @@ int con_debug_leave(void)
         fg_console = saved_fg_console;
         last_console = saved_last_console;
         want_console = saved_want_console;
+        console_blanked = saved_console_blanked;
         vc_cons[fg_console].d->vc_mode = saved_vc_mode;
 
         vc = vc_cons[fg_console].d;
diff --git a/kernel/debug/kdb/kdb_private.h b/kernel/debug/kdb/kdb_private.h
index c438f545a321..be775f7e81e0 100644
--- a/kernel/debug/kdb/kdb_private.h
+++ b/kernel/debug/kdb/kdb_private.h
@@ -255,7 +255,14 @@ extern void kdb_ps1(const struct task_struct *p);
 extern void kdb_print_nameval(const char *name, unsigned long val);
 extern void kdb_send_sig_info(struct task_struct *p, struct siginfo *info);
 extern void kdb_meminfo_proc_show(void);
+#ifdef CONFIG_KALLSYMS
 extern const char *kdb_walk_kallsyms(loff_t *pos);
+#else /* ! CONFIG_KALLSYMS */
+static inline const char *kdb_walk_kallsyms(loff_t *pos)
+{
+        return NULL;
+}
+#endif /* ! CONFIG_KALLSYMS */
 extern char *kdb_getstr(char *, size_t, char *);
 
 /* Defines for kdb_symbol_print */
diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index 45344d5c53dd..6b2485dcb050 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -82,8 +82,8 @@ static char *kdb_name_table[100];	/* arbitrary size */
 int kdbnearsym(unsigned long addr, kdb_symtab_t *symtab)
 {
         int ret = 0;
-        unsigned long symbolsize;
-        unsigned long offset;
+        unsigned long symbolsize = 0;
+        unsigned long offset = 0;
 #define knt1_size 128           /* must be >= kallsyms table size */
         char *knt1 = NULL;