From 14e45c15e1dcc4d972b41343661683efd60fed72 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 9 Jun 2010 14:01:54 +0200 Subject: [PATCH] sata_sil24: memset() overflow cb->atapi.cdb is an array of 16 u8 elements. The call too memset() would set the first part of the sge array to zero as well. It's not a packed struct. This one has been around for five years. I found it with Smatch. I think the reason no one has seen it before is because we normally call sil24_fill_sg() and that overwrites sge with proper information? Signed-off-by: Dan Carpenter Signed-off-by: Jeff Garzik --- drivers/ata/sata_sil24.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index 70b58fe9e5b1..a7f0139c3aae 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -865,7 +865,7 @@ static void sil24_qc_prep(struct ata_queued_cmd *qc) } else { prb = &cb->atapi.prb; sge = cb->atapi.sge; - memset(cb->atapi.cdb, 0, 32); + memset(cb->atapi.cdb, 0, sizeof(cb->atapi.cdb)); memcpy(cb->atapi.cdb, qc->cdb, qc->dev->cdb_len); if (ata_is_data(qc->tf.protocol)) { -- 2.20.1