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x86: mce, inject: Use real inject-msg in raise_local

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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 <dnelson@redhat.com>
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Andi Kleen <ak@linux.intel.com>
LKML-Reference: <1253601357.15717.757.camel@yhuang-dev.sh.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Huang Ying 2009-09-22 14:35:57 +08:00 committed by Ingo Molnar
parent b417c9fd86
commit 14c0abf14a
1 changed files with 4 additions and 3 deletions
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7
arch/x86/kernel/cpu/mcheck/mce-inject.c
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@ -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 */