| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 02/42] Drivers: hv: vmbus: Remove the undesired put_cpu_ptr() in hv_synic_cleanup() | Date | Thu, 9 May 2019 20:41:51 +0200 |
| |
From: Dexuan Cui <decui@microsoft.com>
commit a0033bd1eae4650b69be07c17cb87393da584563 upstream.
With CONFIG_DEBUG_PREEMPT=y, the put_cpu_ptr() triggers 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> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/hv/hv.c | 1 - 1 file changed, 1 deletion(-)
--- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -356,7 +356,6 @@ 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(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,
|