Messages in this thread | | | From | Ivan Mironov <> | Subject | [RFC PATCH 0/4] watchdog: hpwdt: Fix NMI-related behaviour when CONFIG_HPWDT_NMI_DECODING is enabled | Date | Mon, 14 Jan 2019 07:36:13 +0500 |
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Hi,
I found out that hpwdt alters NMI behaviour unexpectedly if compiled with enabled CONFIG_HPWDT_NMI_DECODING:
* System starts to panic on any NMI with misleading message. * Watchdog provided by hpwdt is not working after such panic.
Here are the patches that should fix this.
This is an RFC patch series because I am not sure that patches are correct. Questions:
* Are "mynmi" flags always set on all supported iLO versions when iLO is the source of NMI? * Is it safe to reset "mynmi" flags to zero if code decides to not panic?
Ivan Mironov (4): watchdog: hpwdt: Don't disable watchdog on NMI watchdog: hpwdt: Don't panic on foreign NMI watchdog: hpwdt: Add more information into message watchdog: hpwdt: Make panic behaviour configurable
drivers/watchdog/hpwdt.c | 45 ++++++++++++++++++++++------------------ 1 file changed, 25 insertions(+), 20 deletions(-)
-- 2.20.1
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