diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2016-12-07 01:16:25 -0800 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2017-03-13 21:40:34 +0100 |
| commit | 3ee3990aefa1860fca0c00bf1a03ebaab993550e (patch) | |
| tree | 036c916366307dbc5a3c26037697a4f1f5cca260 | |
| parent | 76c23a97cc8bcec75e7042c1df0f67133a8a2efe (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: Jiri Slaby <jslaby@suse.cz>
| -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 88f4096fa078..3fdb9af08705 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -271,7 +271,7 @@ int hv_synic_alloc(void) size_t size = sizeof(struct tasklet_struct); int cpu; - 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"); @@ -314,7 +314,7 @@ void hv_synic_free(void) { int cpu; - for_each_online_cpu(cpu) + for_each_present_cpu(cpu) hv_synic_free_cpu(cpu); } |