From: Dexuan Cui <decui@microsoft.com>
To: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
Stephen Hemminger <sthemmin@microsoft.com>,
Sasha Levin <Alexander.Levin@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
KY Srinivasan <kys@microsoft.com>,
"devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Michael Kelley <mikelley@microsoft.com>
Cc: "marcelo.cerri@canonical.com" <marcelo.cerri@canonical.com>,
"apw@canonical.com" <apw@canonical.com>,
"olaf@aepfle.de" <olaf@aepfle.de>, vkuznets <vkuznets@redhat.com>,
"jasowang@redhat.com" <jasowang@redhat.com>,
Dexuan Cui <decui@microsoft.com>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: [PATCH] vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup()
Date: Fri, 12 Apr 2019 23:34:45 +0000 [thread overview]
Message-ID: <20190412233429.29146-1-decui@microsoft.com> (raw)
With CONFIG_DEBUG_PREEMPT=y, the put_cpu_ptr() triggiers an underflow
warning in preempt_count_sub().
Fixes: 37cdd991fac8 ("vmbus: put related per-cpu variable together")
Cc: stable@vger.kernel.org
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
---
drivers/hv/hv.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 632d25674e7f..45653029ee18 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -408,7 +408,6 @@ int hv_synic_cleanup(unsigned int cpu)
clockevents_unbind_device(hv_cpu->clk_evt, cpu);
hv_ce_shutdown(hv_cpu->clk_evt);
- put_cpu_ptr(hv_cpu);
}
hv_get_synint_state(VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
--
2.19.1
next reply other threads:[~2019-04-12 23:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-12 23:34 Dexuan Cui [this message]
2019-04-13 2:19 ` [PATCH] vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup() Michael Kelley
2019-04-13 13:38 ` Sasha Levin
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