edac: i5000_edac critical fix panic out of bounds

[~andy/linux] / drivers / edac / i5000_edac.c

diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index 77a9579d716777c70b5dd399a1f40f44cab87e74..adc10a2ac5f63b0e1dbd90ca2ca529e9e2a5b15c 100644 (file)
--- a/drivers/edac/i5000_edac.c
+++ b/drivers/edac/i5000_edac.c
@@ -577,7 +577,13 @@ static void i5000_process_nonfatal_error_info(struct mem_ctl_info *mci,
                debugf0("\tUncorrected bits= 0x%x\n", ue_errors);
 
                branch = EXTRACT_FBDCHAN_INDX(info->ferr_nf_fbd);
-               channel = branch;
+
+               /*
+                * According with i5000 datasheet, bit 28 has no significance
+                * for errors M4Err-M12Err and M17Err-M21Err, on FERR_NF_FBD
+                */
+               channel = branch & 2;
+
                bank = NREC_BANK(info->nrecmema);
                rank = NREC_RANK(info->nrecmema);
                rdwr = NREC_RDWR(info->nrecmema);