[PATCH 1/1] EDAC/igen6: Fix the issue of no error events

From: Qiuxu Zhuo
Date: Tue Jul 25 2023 - 04:06:42 EST


Current igen6_edac checks for pending errors before the registration
of the error handler. However, there is a possibility that the error
occurs during the registration process, leading to unhandled pending
errors and no future error events. This issue can be reproduced by
repeatedly injecting errors during the loading of the igen6_edac.

Fix this issue by moving the pending error handler after the registration
of the error handler, ensuring that no pending errors are left unhandled.

Fixes: 10590a9d4f23 ("EDAC/igen6: Add EDAC driver for Intel client SoCs using IBECC")
Reported-by: Ee Wey Lim <ee.wey.lim@xxxxxxxxx>
Tested-by: Ee Wey Lim <ee.wey.lim@xxxxxxxxx>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@xxxxxxxxx>
---
drivers/edac/igen6_edac.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/edac/igen6_edac.c b/drivers/edac/igen6_edac.c
index 544dd19072ea..1a18693294db 100644
--- a/drivers/edac/igen6_edac.c
+++ b/drivers/edac/igen6_edac.c
@@ -27,7 +27,7 @@
#include "edac_mc.h"
#include "edac_module.h"

-#define IGEN6_REVISION "v2.5"
+#define IGEN6_REVISION "v2.5.1"

#define EDAC_MOD_STR "igen6_edac"
#define IGEN6_NMI_NAME "igen6_ibecc"
@@ -1216,9 +1216,6 @@ static int igen6_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
INIT_WORK(&ecclog_work, ecclog_work_cb);
init_irq_work(&ecclog_irq_work, ecclog_irq_work_cb);

- /* Check if any pending errors before registering the NMI handler */
- ecclog_handler();
-
rc = register_err_handler();
if (rc)
goto fail3;
@@ -1230,6 +1227,9 @@ static int igen6_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto fail4;
}

+ /* Check if any pending errors before/during the registration of the error handler */
+ ecclog_handler();
+
igen6_debug_setup();
return 0;
fail4:
--
2.17.1