From 14c0abf14a5e67e793131116bd97f57da37ccce3 Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Tue, 22 Sep 2009 14:35:57 +0800 Subject: [PATCH] x86: mce, inject: Use real inject-msg in raise_local Current raise_local() uses a struct mce that comes from mce_write() as a parameter instead of the real inject-msg, so when we set mce.finished = 0 to clear injected MCE, the real inject stays valid. This will cause the remaining inject-msg affect the next injection, which is not desired. To fix this, real inject-msg is used in raise_local instead of the one on the stack. This patch is based on the diagnosis and the fixes by Dean Nelson. Reported-by: Dean Nelson Signed-off-by: Huang Ying Cc: Hidetoshi Seto Cc: Andi Kleen LKML-Reference: <1253601357.15717.757.camel@yhuang-dev.sh.intel.com> Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/mcheck/mce-inject.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c index 7029f0e..472763d 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-inject.c +++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c @@ -98,8 +98,9 @@ static struct notifier_block mce_raise_nb = { }; /* Inject mce on current CPU */ -static int raise_local(struct mce *m) +static int raise_local(void) { + struct mce *m = &__get_cpu_var(injectm); int context = MCJ_CTX(m->inject_flags); int ret = 0; int cpu = m->extcpu; @@ -167,12 +168,12 @@ static void raise_mce(struct mce *m) } cpu_relax(); } - raise_local(m); + raise_local(); put_cpu(); put_online_cpus(); } else #endif - raise_local(m); + raise_local(); } /* Error injection interface */ -- 1.8.2.3