From 28178a88942819c19d9bc15e3a0703f60de1f2bb Mon Sep 17 00:00:00 2001 From: Petr Mladek Date: Fri, 11 Jan 2019 13:45:15 +0100 Subject: [PATCH] sysrq: Restore original console_loglevel when sysrq disabled commit 075e1a0c50f59ea210561d0d0fedbd945615df78 upstream. The sysrq header line is printed with an increased loglevel to provide users some positive feedback. The original loglevel is not restored when the sysrq operation is disabled. This bug was introduced in 2.6.12 (pre-git-history) by the commit ("Allow admin to enable only some of the Magic-Sysrq functions"). Signed-off-by: Petr Mladek Reviewed-by: Sergey Senozhatsky Reviewed-by: Steven Rostedt (VMware) Cc: Tommi Rantala Signed-off-by: Greg Kroah-Hartman --- drivers/tty/sysrq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index 377b3592384e..a5516523f816 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -560,6 +560,7 @@ void __handle_sysrq(int key, bool check_mask) op_p->handler(key); } else { pr_cont("This sysrq operation is disabled.\n"); + console_loglevel = orig_log_level; } } else { pr_cont("HELP : ");