scsi: ses: check return code from ses_recv_diag() (acf8ab9a) · Commits · 戴 / test

We should be checking the return code from ses_recv_diag() to avoid accessing invalid data. Signed-off-by:

drivers/scsi/ses.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -179,7 +179,8 @@ static unsigned char ses_get_page2_descriptor(struct enclosure_device edev,
		unsigned char *type_ptr = ses_dev->page1_types;
		unsigned char *desc_ptr = ses_dev->page2 + 8;

		ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
		if (ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len) < 0)
		return NULL;

		for (i = 0; i < ses_dev->page1_num_types; i++, type_ptr += 4) {
		for (j = 0; j < type_ptr[1]; j++) {