Patch "ipmi/watchdog: fix watchdog timeout set on reboot" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

ipmi/watchdog: fix watchdog timeout set on reboot

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
ipmi-watchdog-fix-watchdog-timeout-set-on-reboot.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Valentin Vidic <[email protected]>
Date: Fri, 5 May 2017 21:07:33 +0200
Subject: ipmi/watchdog: fix watchdog timeout set on reboot

From: Valentin Vidic <[email protected]>

commit 860f01e96981a68553f3ca49f574ff14fe955e72 upstream.

systemd by default starts watchdog on reboot and sets the timer to ShutdownWatchdogSec=10min. Reboot handler in ipmi_watchdog than reduces the timer to 120s which is not enough time to boot a Xen machine with a lot of RAM. As a result the machine is rebooted the second time during the long run of (XEN) Scrubbing Free RAM.....

Fix this by setting the timer to 120s only if it was previously set to a low value.

---
 drivers/char/ipmi/ipmi_watchdog.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

@@ -1162,10 +1162,11 @@ static int wdog_reboot_handler(struct no
 			ipmi_watchdog_state = WDOG_TIMEOUT_NONE;
 			ipmi_set_timeout(IPMI_SET_TIMEOUT_NO_HB);
 		} else if (ipmi_watchdog_state != WDOG_TIMEOUT_NONE) {
-			/* Set a long timer to let the reboot happens, but
-			   reboot if it hangs, but only if the watchdog
+			/* Set a long timer to let the reboot happen or
+			   reset if it hangs, but only if the watchdog
 			   timer was already running. */
-			timeout = 120;
+			if (timeout < 120)
+				timeout = 120;
 			pretimeout = 0;
 			ipmi_watchdog_state = WDOG_TIMEOUT_RESET;
 			ipmi_set_timeout(IPMI_SET_TIMEOUT_NO_HB);

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/ipmi-watchdog-fix-watchdog-timeout-set-on-reboot.patch