From: Dave Jones <davej@redhat.com>
To: Andi Kleen <ak@suse.de>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: touch softlockup during stack unwinding.
Date: Sun, 26 Nov 2006 15:17:37 -0500 [thread overview]
Message-ID: <20061126201737.GA13650@redhat.com> (raw)
In-Reply-To: <200611262026.57604.ak@suse.de>
Sometimes the soft watchdog fires after we're done oopsing.
See http://projects.info-pull.com/mokb/MOKB-25-11-2006.html for an example.
The NMI watchdog could also fire, so tickle both watchdogs.
Signed-off-by: Dave Jones <davej@redhat.com>
--- linux-2.6/arch/i386/kernel/traps.c~ 2006-11-26 01:44:58.000000000 -0500
+++ linux-2.6/arch/i386/kernel/traps.c 2006-11-26 01:45:32.000000000 -0500
@@ -29,6 +29,7 @@
#include <linux/kexec.h>
#include <linux/unwind.h>
#include <linux/uaccess.h>
+#include <linux/nmi.h>
#ifdef CONFIG_EISA
#include <linux/ioport.h>
@@ -247,6 +247,7 @@ void dump_trace(struct task_struct *task
stack = (unsigned long*)context->previous_esp;
if (!stack)
break;
+ touch_nmi_watchdog();
}
}
EXPORT_SYMBOL(dump_trace);
--
http://www.codemonkey.org.uk
prev parent reply other threads:[~2006-11-26 20:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-26 6:47 touch softlockup during Dave Jones
2006-11-26 19:26 ` Andi Kleen
2006-11-26 20:17 ` Dave Jones [this message]
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