diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2016-12-07 01:16:25 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-12 06:41:49 +0100 |
| commit | 879dc37cc3a81c99527410a83ae9cc35c637e8b1 (patch) | |
| tree | d99747ae95c249f1f0b14e602c79077b1677f3df | |
| parent | 6d0511ed15db30965f8a3be8f0733bb6efd2b95e (diff) | |
hv: allocate synic pages for all present CPUs
commit 421b8f20d3c381b215f988b42428f56fc3b82405 upstream.
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: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/hv/hv.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 60dbd6cb4640..e4bb498e41ae 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -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); } |