[PATCH 07/31] x86: MCE: Log corrected errors when panicing

[Andi Kleen]

From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

Impact: bugfix

Normally the machine check handler ignores corrected errors and leaves
them to machine_check_poll(). But when panicing mcp won't run, so
log all errors.

Note: this can still miss some cases until the "early no way out"
patch later is applied too.

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
---
 arch/x86/kernel/cpu/mcheck/mce.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index d2d7a68..d379e3f 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -398,9 +398,9 @@ void do_machine_check(struct pt_regs *regs, long error_code)
 
 		/*
 		 * Non uncorrected errors are handled by machine_check_poll
-		 * Leave them alone.
+		 * Leave them alone, unless this panics.
 		 */
-		if ((m.status & MCI_STATUS_UC) == 0)
+		if ((m.status & MCI_STATUS_UC) == 0 && !no_way_out)
 			continue;
 
 		/*
-- 
1.6.0.2

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