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authorVitaly Kuznetsov <vkuznets@redhat.com>2016-12-07 01:16:26 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-10 21:46:40 +0100
commit3c7630d35009e6635e5b58d62de554fd5b6db5df (patch)
treeb853b5f9fdac4a0f7c4c62b6ac359db64858c8cc
parent421b8f20d3c381b215f988b42428f56fc3b82405 (diff)
downloadlinux-3c7630d35009e6635e5b58d62de554fd5b6db5df.tar.bz2
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>
-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 dc11296d50fd..13937563c9db 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -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.
*/