When calculating the size needed by struct atmel_pmecc_user *user, the dmu and delta buffer sizes were forgotten. This lead to a memory corruption (especially with a large ecc_strength).
Link: http://lkml.kernel.org/r/1506503157.3016.5.ca...@gmail.com Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver") Cc: Nicolas Ferre <nicolas.fe...@microchip.com> Cc: sta...@vger.kernel.org Reported-by: Richard Genoud <richard.gen...@gmail.com> Pointed-at-by: Boris Brezillon <boris.brezil...@free-electrons.com> Signed-off-by: Richard Genoud <richard.gen...@gmail.com> --- drivers/mtd/nand/atmel/pmecc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/nand/atmel/pmecc.c b/drivers/mtd/nand/atmel/pmecc.c index 146af8218314..8268636675ef 100644 --- a/drivers/mtd/nand/atmel/pmecc.c +++ b/drivers/mtd/nand/atmel/pmecc.c @@ -363,7 +363,7 @@ atmel_pmecc_create_user(struct atmel_pmecc *pmecc, size += (req->ecc.strength + 1) * sizeof(u16); /* Reserve space for mu, dmu and delta. */ size = ALIGN(size, sizeof(s32)); - size += (req->ecc.strength + 1) * sizeof(s32); + size += (req->ecc.strength + 1) * sizeof(s32) * 3; user = kzalloc(size, GFP_KERNEL); if (!user)