EEC information is held in the Out-Of-Bounds (OOB) area, so can not be
larger than the area it's stored in. If the math is out, we issue a
warning to the user.
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
drivers/mtd/nand/nand_base.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 4f3e80c..d0ebb05 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -4063,6 +4063,8 @@ int nand_scan_tail(struct mtd_info *mtd)
}
ecc->total = ecc->steps * ecc->bytes;
+ WARN_ON(ecc->total > mtd->oobsize);
+
/* Allow subpage writes up to ecc.steps. Not possible for MLC flash */
if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && nand_is_slc(chip)) {
switch (ecc->steps) {
--
1.9.1
--
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