Merge branch 'next' into for-linus

Prepare second round of input updates for 5.3 merge window.

1 files changed, 12 insertions, 7 deletions

diff --git a/kernel/panic.c b/kernel/panic.c
index 0ae0d7332f12..4d9f55bf7d38 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  *  linux/kernel/panic.c
  *
@@ -51,6 +52,7 @@ EXPORT_SYMBOL_GPL(panic_timeout);
 #define PANIC_PRINT_TIMER_INFO		0x00000004
 #define PANIC_PRINT_LOCK_INFO		0x00000008
 #define PANIC_PRINT_FTRACE_INFO		0x00000010
+#define PANIC_PRINT_ALL_PRINTK_MSG	0x00000020
 unsigned long panic_print;
 
 ATOMIC_NOTIFIER_HEAD(panic_notifier_list);
@@ -134,6 +136,9 @@ EXPORT_SYMBOL(nmi_panic);
 
 static void panic_print_sys_info(void)
 {
+	if (panic_print & PANIC_PRINT_ALL_PRINTK_MSG)
+		console_flush_on_panic(CONSOLE_REPLAY_ALL);
+
 	if (panic_print & PANIC_PRINT_TASK_INFO)
 		show_state();
 
@@ -277,7 +282,7 @@ void panic(const char *fmt, ...)
 	 * panic() is not being callled from OOPS.
 	 */
 	debug_locks_off();
-	console_flush_on_panic();
+	console_flush_on_panic(CONSOLE_FLUSH_PENDING);
 
 	panic_print_sys_info();
 
@@ -306,6 +311,8 @@ void panic(const char *fmt, ...)
 		 * shutting down.  But if there is a chance of
 		 * rebooting the system it will be rebooted.
 		 */
+		if (panic_reboot_mode != REBOOT_UNDEFINED)
+			reboot_mode = panic_reboot_mode;
 		emergency_restart();
 	}
 #ifdef __sparc__
@@ -318,14 +325,12 @@ void panic(const char *fmt, ...)
 	}
 #endif
 #if defined(CONFIG_S390)
-	{
-		unsigned long caller;
-
-		caller = (unsigned long)__builtin_return_address(0);
-		disabled_wait(caller);
-	}
+	disabled_wait();
 #endif
 	pr_emerg("---[ end Kernel panic - not syncing: %s ]---\n", buf);
+
+	/* Do not scroll important messages printed above */
+	suppress_printk = 1;
 	local_irq_enable();
 	for (i = 0; ; i += PANIC_TIMER_STEP) {
 		touch_softlockup_watchdog();