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Commit 421b8f20 authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Greg Kroah-Hartman
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hv: allocate synic pages for all present CPUs 



It may happen that not all CPUs are online when we do hv_synic_alloc() and
in case more CPUs come online later we may try accessing these allocated
structures.

Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c0bb0392

drivers/hv/hv.c

+2 −2
Original line number Diff line number Diff line
@@ -411,7 +411,7 @@ int hv_synic_alloc(void) 
		goto err;

	}



	for_each_online_cpu(cpu) {

	for_each_present_cpu(cpu) {

		hv_context.event_dpc[cpu] = kmalloc(size, GFP_ATOMIC);

		if (hv_context.event_dpc[cpu] == NULL) {

			pr_err("Unable to allocate event dpc\n");
@@ -482,7 +482,7 @@ void hv_synic_free(void) 
	int cpu;



	kfree(hv_context.hv_numa_map);

	for_each_online_cpu(cpu)

	for_each_present_cpu(cpu)

		hv_synic_free_cpu(cpu);

}