Commit 3c7630d3 authored Dec 07, 2016 by Vitaly Kuznetsov Committed by Greg Kroah-Hartman Jan 10, 2017

hv: init percpu_list in hv_synic_alloc()



Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a
crash in percpu_channel_enq() when not all CPUs were online during
initialization and it naturally belongs there.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 421b8f20

drivers/hv/hv.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -457,6 +457,8 @@ int hv_synic_alloc(void)
		pr_err("Unable to allocate post msg page\n");
		goto err;
		}

		INIT_LIST_HEAD(&hv_context.percpu_list[cpu]);
		}

		return 0;
		@@ -552,8 +554,6 @@ void hv_synic_init(void *arg)
		rdmsrl(HV_X64_MSR_VP_INDEX, vp_index);
		hv_context.vp_index[cpu] = (u32)vp_index;

		INIT_LIST_HEAD(&hv_context.percpu_list[cpu]);

		/*
		* Register the per-cpu clockevent source.
		*/