This issue is introduced in commit 27f6c573e0. I forget to execute put_cpu_var operation after get_cpu_var. Signed-off-by: Chen, Gong <gong.chen@xxxxxxxxxxxxxxx> --- arch/x86/kernel/cpu/mcheck/mce.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index eeee23f..26eaf3b 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -620,6 +620,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b) v = &get_cpu_var(mce_polled_error); set_bit(0, v); + put_cpu_var(mce_polled_error); /* * Uncorrected or signalled events are handled by the exception * handler when it is enabled, so don't process those here. -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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