From: Michael Kelley Date: Thu, 6 Aug 2020 16:22:15 +0000 (-0700) Subject: Drivers: hv: vmbus: Only notify Hyper-V for die events that are oops X-Git-Tag: v5.9-rc1~31^2~1 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=608a973bd52ef1705941b18f55e39655fcfe9cdb;p=thirdparty%2Fkernel%2Flinux.git Drivers: hv: vmbus: Only notify Hyper-V for die events that are oops Hyper-V currently may be notified of a panic for any die event. But this results in false panic notifications for various user space traps that are die events. Fix this by ignoring die events that aren't oops. Fixes: 510f7aef65bb ("Drivers: hv: vmbus: prefer 'die' notification chain to 'panic'") Signed-off-by: Michael Kelley Reviewed-by: Vitaly Kuznetsov Link: https://lore.kernel.org/r/1596730935-11564-1-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu --- diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index d69f4efa37198..45c954d75e701 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -87,6 +87,10 @@ static int hyperv_die_event(struct notifier_block *nb, unsigned long val, struct die_args *die = (struct die_args *)args; struct pt_regs *regs = die->regs; + /* Don't notify Hyper-V if the die event is other than oops */ + if (val != DIE_OOPS) + return NOTIFY_DONE; + /* * Hyper-V should be notified only once about a panic. If we will be * doing hyperv_report_panic_msg() later with kmsg data, don't do