From: Tony Luck tony.luck@intel.com
commit 45bc6098a3e279d8e391d22428396687562797e2 upstream.
IA32_MCG_STATUS.RIPV indicates whether the return RIP value pushed onto the stack as part of machine check delivery is valid or not.
Various drivers copied a code fragment that uses the RIPV bit to determine the severity of the error as either HW_EVENT_ERR_UNCORRECTED or HW_EVENT_ERR_FATAL, but this check is reversed (marking errors where RIPV is set as "FATAL").
Reverse the tests so that the error is marked fatal when RIPV is not set.
Reported-by: Gabriele Paoloni gabriele.paoloni@intel.com Signed-off-by: Tony Luck tony.luck@intel.com Signed-off-by: Borislav Petkov bp@suse.de Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20200707194324.14884-1-tony.luck@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/edac/i7core_edac.c | 4 ++-- drivers/edac/pnd2_edac.c | 2 +- drivers/edac/sb_edac.c | 4 ++-- drivers/edac/skx_common.c | 4 ++-- 4 files changed, 7 insertions(+), 7 deletions(-)
--- a/drivers/edac/i7core_edac.c +++ b/drivers/edac/i7core_edac.c @@ -1710,9 +1710,9 @@ static void i7core_mce_output_error(stru if (uncorrected_error) { core_err_cnt = 1; if (ripv) - tp_event = HW_EVENT_ERR_FATAL; - else tp_event = HW_EVENT_ERR_UNCORRECTED; + else + tp_event = HW_EVENT_ERR_FATAL; } else { tp_event = HW_EVENT_ERR_CORRECTED; } --- a/drivers/edac/pnd2_edac.c +++ b/drivers/edac/pnd2_edac.c @@ -1155,7 +1155,7 @@ static void pnd2_mce_output_error(struct u32 optypenum = GET_BITFIELD(m->status, 4, 6); int rc;
- tp_event = uc_err ? (ripv ? HW_EVENT_ERR_FATAL : HW_EVENT_ERR_UNCORRECTED) : + tp_event = uc_err ? (ripv ? HW_EVENT_ERR_UNCORRECTED : HW_EVENT_ERR_FATAL) : HW_EVENT_ERR_CORRECTED;
/* --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -2982,9 +2982,9 @@ static void sbridge_mce_output_error(str if (uncorrected_error) { core_err_cnt = 1; if (ripv) { - tp_event = HW_EVENT_ERR_FATAL; - } else { tp_event = HW_EVENT_ERR_UNCORRECTED; + } else { + tp_event = HW_EVENT_ERR_FATAL; } } else { tp_event = HW_EVENT_ERR_CORRECTED; --- a/drivers/edac/skx_common.c +++ b/drivers/edac/skx_common.c @@ -494,9 +494,9 @@ static void skx_mce_output_error(struct if (uncorrected_error) { core_err_cnt = 1; if (ripv) { - tp_event = HW_EVENT_ERR_FATAL; - } else { tp_event = HW_EVENT_ERR_UNCORRECTED; + } else { + tp_event = HW_EVENT_ERR_FATAL; } } else { tp_event = HW_EVENT_ERR_CORRECTED;