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From: Chuck Ebbert <76306.1226@compuserve.com>
To: Michael Schierl <schierlm@gmx.de>
Cc: Joel Becker <joel.becker@oracle.com>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH] softdog.c (was: Kernel panic after rmmod softdog (2.6.8.1))
Date: Mon, 11 Oct 2004 13:01:34 -0400	[thread overview]
Message-ID: <200410111304_MC3-1-8C02-813F@compuserve.com> (raw)

Michael Schierl wrote:

> today, when testing the software watchdog, I accidentally removed the 
> software watchdog kernel module and got a kernel panic.

Does this fix it? (compiled but not tested)

--- linux-2.6.8.1/drivers/char/watchdog/softdog.c.orig  Sun Oct 10 23:08:24 2004
+++ linux-2.6.8.1/drivers/char/watchdog/softdog.c       Sun Oct 10 23:10:12 2004
@@ -135,8 +135,9 @@
 {
        if(test_and_set_bit(0, &timer_alive))
                return -EBUSY;
-       if (nowayout)
-               __module_get(THIS_MODULE);
+
+       __module_get(THIS_MODULE);
+
        /*
         *      Activate timer
         */
@@ -152,6 +153,7 @@
         */
        if (expect_close == 42) {
                softdog_stop();
+               module_put(THIS_MODULE);
        } else {
                printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
                softdog_keepalive();


--Chuck Ebbert  11-Oct-04  12:49:45
  Current book: Stephen King: Wizard and Glass

             reply	other threads:[~2004-10-11 17:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-11 17:01 Chuck Ebbert [this message]
2004-10-11 20:00 ` Arnd Bergmann
2004-10-13 23:55 Chuck Ebbert

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