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[Bug 1042933] kernel panic due to nmi caused by systemd-watchdog test
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 30 Jun 2017 11:38:48 +0000
  • Message-id: <bug-1042933-21960-O2RfdDn5hf@http.bugzilla.suse.com/>
http://bugzilla.suse.com/show_bug.cgi?id=1042933
http://bugzilla.suse.com/show_bug.cgi?id=1042933#c20

--- Comment #20 from Thomas Blume <thomas.blume@xxxxxxxx> ---
(In reply to Borislav Petkov from comment #19)
Ok, trying to find another one for a second reproducer.

Yeah, that would be a good idea.

I could reproduce the NMI on a second machine:

-->
ettrick:~ #
ettrick:~ # insmod -f /usr/src/linux-4.11.7-1/drivers/watchdog/hpwdt.ko
[ 3605.252817] hpwdt: module_layout: kernel tainted.
[ 3605.254047] Disabling lock debugging due to kernel taint
[ 3605.255254] hpwdt: loading out-of-tree module taints kernel.
[ 3605.261819] hpwdt: tblume: New timer passed in is 30 seconds
[ 3605.263395] hpwdt 0000:01:04.0: HPE Watchdog Timer Driver: NMI decoding
initialized, allow kernel dump: ON (default = 1/ON)
[ 3605.266632] hpwdt 0000:01:04.0: HPE Watchdog Timer Driver: 1.4.0, timer
margin: 30 seconds (nowayout=0).
ettrick:~ #
ettrick:~ # /systemd-testsuite/run/test-watchdog
[ 3619.636192] hpwdt: tblume: New timer passed in is 10 seconds
Hardware watchdog 'HPE iLO2+ HW Watchdog Timer', version 0
Set hardware watchdog to 10s.
Pinging...
[ 3620.881380] hpwdt: hpwdt_pretimeout: NMI raised
Pinging...
Pinging...
Pinging...
Pinging...
ettrick:~ #
--<

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