lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Sun, 27 Sep 2009 14:36:54 +0200
From:	Bernhard Walle <bernhard@...lle.de>
To:	linux-kernel@...r.kernel.org
Cc:	Bernhard Walle <bernhard@...lle.de>
Subject: [PATCH] Always print panic message on current console

The kernel offers with TIOCL_GETKMSGREDIRECT ioctl() the possibility to
redirect the kernel messages to a specific console.

However, since it's not possible to switch to the kernel message console after
a panic(), it would be nice if the kernel would print the panic message on the
current console.


Signed-off-by: Bernhard Walle <bernhard@...lle.de>
---
 kernel/panic.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/kernel/panic.c b/kernel/panic.c
index bcdef26..f9950e3 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -22,6 +22,7 @@
 #include <linux/init.h>
 #include <linux/nmi.h>
 #include <linux/dmi.h>
+#include <linux/tty.h>
 
 int panic_on_oops;
 static unsigned long tainted_mask;
@@ -65,6 +66,9 @@ NORET_TYPE void panic(const char * fmt, ...)
 	 */
 	preempt_disable();
 
+	/* don't redirect the panic message to some hidden console */
+	kmsg_redirect = 0;
+
 	bust_spinlocks(1);
 	va_start(args, fmt);
 	vsnprintf(buf, sizeof(buf), fmt, args);
-- 
1.6.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ