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authorVitaly Kuznetsov <vkuznets@redhat.com>2016-12-07 01:16:26 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-12 06:37:29 +0100
commit862d2b7d21d383d1b043bda57db38a7e3520f42e (patch)
tree7f2b17f719b39e08a1635b26acdbf6a64580e26c
parent374907e8d11613e790328b109041dca9578e3b1f (diff)
downloadlinux-linaro-stable-862d2b7d21d383d1b043bda57db38a7e3520f42e.tar.gz
hv: init percpu_list in hv_synic_alloc()
commit 3c7630d35009e6635e5b58d62de554fd5b6db5df upstream. 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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/hv/hv.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index ad62a725fb5b..89fd0113aa5c 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -461,6 +461,8 @@ 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;
@@ -555,8 +557,6 @@ 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.
*/