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We used to have a special ring buffer for deferred errors that was used to mark problem pages. We replaced that with a generic pool. Then later converted mce_log() to also use the same pool. As a result, we end up adding all deferred errors to the pool twice. Rearrange this code. Make sure to set the m.severity and m.usable_addr fields for deferred errors. Then if flags and mca_cfg.dont_log_ce mean we call mce_log() we are done, because that will add this entry to the generic pool. If we skipped mce_log(), then we still want to take action for the deferred error, so add to the pool. Change the name of the boolean "error_logged" to "error_seen", we should set it whether of not we logged an error because the return value from machine_check_poll() is used to decide whether storms have subsided or not. Reported-by: Gong Chen <gong.chen@linux.intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-edac <linux-edac@vger.kernel.org> Link: http://lkml.kernel.org/r/1448350880-5573-2-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>