Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757838Ab3FGXxC (ORCPT ); Fri, 7 Jun 2013 19:53:02 -0400 Received: from smtp.outflux.net ([198.145.64.163]:56172 "EHLO smtp.outflux.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757639Ab3FGXwq (ORCPT ); Fri, 7 Jun 2013 19:52:46 -0400 From: Kees Cook To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Greg Kroah-Hartman , Jens Axboe , "David S. Miller" , Herbert Xu , David Woodhouse , Karsten Keil , Kees Cook Subject: [PATCH 3/6] device: avoid format string in dev_set_name Date: Fri, 7 Jun 2013 16:50:52 -0700 Message-Id: <1370649055-12830-4-git-send-email-keescook@chromium.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1370649055-12830-1-git-send-email-keescook@chromium.org> References: <1370649055-12830-1-git-send-email-keescook@chromium.org> X-HELO: www.outflux.net Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 13835 Lines: 358 Calling dev_set_name with a single paramter causes it to be handled as a format string. Many callers are passing potentially dynamic string content, so use "%s" in those cases to avoid any potential accidents, including wrappers like device_create*() and bdi_register(). Signed-off-by: Kees Cook --- drivers/base/attribute_container.c | 2 +- drivers/devfreq/devfreq.c | 2 +- drivers/extcon/extcon-class.c | 2 +- drivers/hsi/hsi.c | 2 +- drivers/ide/ide-cd.c | 2 +- drivers/ide/ide-gd.c | 2 +- drivers/ide/ide-probe.c | 4 ++-- drivers/ide/ide-tape.c | 2 +- drivers/infiniband/core/sysfs.c | 2 +- drivers/infiniband/hw/qib/qib_file_ops.c | 2 +- drivers/isdn/mISDN/dsp_pipeline.c | 2 +- drivers/mtd/mtdcore.c | 2 +- drivers/platform/x86/wmi.c | 2 +- drivers/scsi/sd.c | 2 +- drivers/staging/android/timed_output.c | 2 +- drivers/staging/dgrp/dgrp_sysfs.c | 2 +- drivers/uwb/lc-dev.c | 2 +- drivers/video/backlight/backlight.c | 2 +- drivers/video/backlight/lcd.c | 2 +- drivers/video/output.c | 2 +- drivers/xen/xenbus/xenbus_probe.c | 2 +- mm/backing-dev.c | 5 ++--- sound/sound_core.c | 2 +- 23 files changed, 25 insertions(+), 26 deletions(-) diff --git a/drivers/base/attribute_container.c b/drivers/base/attribute_container.c index d78b204..ecc1929 100644 --- a/drivers/base/attribute_container.c +++ b/drivers/base/attribute_container.c @@ -167,7 +167,7 @@ attribute_container_add_device(struct device *dev, ic->classdev.parent = get_device(dev); ic->classdev.class = cont->class; cont->class->dev_release = attribute_container_release; - dev_set_name(&ic->classdev, dev_name(dev)); + dev_set_name(&ic->classdev, "%s", dev_name(dev)); if (fn) fn(cont, dev, &ic->classdev); else diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 3b36797..af8372f 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -477,7 +477,7 @@ struct devfreq *devfreq_add_device(struct device *dev, GFP_KERNEL); devfreq->last_stat_updated = jiffies; - dev_set_name(&devfreq->dev, dev_name(dev)); + dev_set_name(&devfreq->dev, "%s", dev_name(dev)); err = device_register(&devfreq->dev); if (err) { put_device(&devfreq->dev); diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c index 60adc04..8b77e60 100644 --- a/drivers/extcon/extcon-class.c +++ b/drivers/extcon/extcon-class.c @@ -620,7 +620,7 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev) edev->dev->class = extcon_class; edev->dev->release = extcon_dev_release; - dev_set_name(edev->dev, edev->name ? edev->name : dev_name(dev)); + dev_set_name(edev->dev, "%s", edev->name ? edev->name : dev_name(dev)); if (edev->max_supported) { char buf[10]; diff --git a/drivers/hsi/hsi.c b/drivers/hsi/hsi.c index 833dd1a..66d4458 100644 --- a/drivers/hsi/hsi.c +++ b/drivers/hsi/hsi.c @@ -75,7 +75,7 @@ static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info) cl->device.bus = &hsi_bus_type; cl->device.parent = &port->device; cl->device.release = hsi_client_release; - dev_set_name(&cl->device, info->name); + dev_set_name(&cl->device, "%s", info->name); cl->device.platform_data = info->platform_data; if (info->archdata) cl->device.archdata = *info->archdata; diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 2ff6204..0b510ba 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -1756,7 +1756,7 @@ static int ide_cd_probe(ide_drive_t *drive) info->dev.parent = &drive->gendev; info->dev.release = ide_cd_release; - dev_set_name(&info->dev, dev_name(&drive->gendev)); + dev_set_name(&info->dev, "%s", dev_name(&drive->gendev)); if (device_register(&info->dev)) goto out_free_disk; diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c index de86631..838996a 100644 --- a/drivers/ide/ide-gd.c +++ b/drivers/ide/ide-gd.c @@ -392,7 +392,7 @@ static int ide_gd_probe(ide_drive_t *drive) idkp->dev.parent = &drive->gendev; idkp->dev.release = ide_disk_release; - dev_set_name(&idkp->dev, dev_name(&drive->gendev)); + dev_set_name(&idkp->dev, "%s", dev_name(&drive->gendev)); if (device_register(&idkp->dev)) goto out_free_disk; diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 068cef0..2a744a9 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -545,7 +545,7 @@ static int ide_register_port(ide_hwif_t *hwif) int ret; /* register with global device tree */ - dev_set_name(&hwif->gendev, hwif->name); + dev_set_name(&hwif->gendev, "%s", hwif->name); dev_set_drvdata(&hwif->gendev, hwif); if (hwif->gendev.parent == NULL) hwif->gendev.parent = hwif->dev; @@ -559,7 +559,7 @@ static int ide_register_port(ide_hwif_t *hwif) } hwif->portdev = device_create(ide_port_class, &hwif->gendev, - MKDEV(0, 0), hwif, hwif->name); + MKDEV(0, 0), hwif, "%s", hwif->name); if (IS_ERR(hwif->portdev)) { ret = PTR_ERR(hwif->portdev); device_unregister(&hwif->gendev); diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index c6c574b..1793aea 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1985,7 +1985,7 @@ static int ide_tape_probe(ide_drive_t *drive) tape->dev.parent = &drive->gendev; tape->dev.release = ide_tape_release; - dev_set_name(&tape->dev, dev_name(&drive->gendev)); + dev_set_name(&tape->dev, "%s", dev_name(&drive->gendev)); if (device_register(&tape->dev)) goto out_free_disk; diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 246fdc1..99904f7 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -813,7 +813,7 @@ int ib_device_register_sysfs(struct ib_device *device, class_dev->class = &ib_class; class_dev->parent = device->dma_device; - dev_set_name(class_dev, device->name); + dev_set_name(class_dev, "%s", device->name); dev_set_drvdata(class_dev, device); INIT_LIST_HEAD(&device->port_list); diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c index b56c942..9dd0bc8 100644 --- a/drivers/infiniband/hw/qib/qib_file_ops.c +++ b/drivers/infiniband/hw/qib/qib_file_ops.c @@ -2208,7 +2208,7 @@ int qib_cdev_init(int minor, const char *name, goto err_cdev; } - device = device_create(qib_class, NULL, dev, NULL, name); + device = device_create(qib_class, NULL, dev, NULL, "%s", name); if (!IS_ERR(device)) goto done; ret = PTR_ERR(device); diff --git a/drivers/isdn/mISDN/dsp_pipeline.c b/drivers/isdn/mISDN/dsp_pipeline.c index 88305c9..8b1a66c 100644 --- a/drivers/isdn/mISDN/dsp_pipeline.c +++ b/drivers/isdn/mISDN/dsp_pipeline.c @@ -102,7 +102,7 @@ int mISDN_dsp_element_register(struct mISDN_dsp_element *elem) entry->dev.class = elements_class; entry->dev.release = mISDN_dsp_dev_release; dev_set_drvdata(&entry->dev, elem); - dev_set_name(&entry->dev, elem->name); + dev_set_name(&entry->dev, "%s", elem->name); ret = device_register(&entry->dev); if (ret) { printk(KERN_ERR "%s: failed to register %s\n", diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index c400c57..048c823 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -1151,7 +1151,7 @@ static int __init mtd_bdi_init(struct backing_dev_info *bdi, const char *name) ret = bdi_init(bdi); if (!ret) - ret = bdi_register(bdi, NULL, name); + ret = bdi_register(bdi, NULL, "%s", name); if (ret) bdi_destroy(bdi); diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c index e4ac38a..b13344c 100644 --- a/drivers/platform/x86/wmi.c +++ b/drivers/platform/x86/wmi.c @@ -743,7 +743,7 @@ static int wmi_create_device(const struct guid_block *gblock, wblock->dev.class = &wmi_class; wmi_gtoa(gblock->guid, guid_string); - dev_set_name(&wblock->dev, guid_string); + dev_set_name(&wblock->dev, "%s", guid_string); dev_set_drvdata(&wblock->dev, wblock); diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index c1c5552..8fa3d0b 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2931,7 +2931,7 @@ static int sd_probe(struct device *dev) device_initialize(&sdkp->dev); sdkp->dev.parent = dev; sdkp->dev.class = &sd_disk_class; - dev_set_name(&sdkp->dev, dev_name(dev)); + dev_set_name(&sdkp->dev, "%s", dev_name(dev)); if (device_add(&sdkp->dev)) goto out_free_index; diff --git a/drivers/staging/android/timed_output.c b/drivers/staging/android/timed_output.c index ec9e2ae..ee3a57f 100644 --- a/drivers/staging/android/timed_output.c +++ b/drivers/staging/android/timed_output.c @@ -78,7 +78,7 @@ int timed_output_dev_register(struct timed_output_dev *tdev) tdev->index = atomic_inc_return(&device_count); tdev->dev = device_create(timed_output_class, NULL, - MKDEV(0, tdev->index), NULL, tdev->name); + MKDEV(0, tdev->index), NULL, "%s", tdev->name); if (IS_ERR(tdev->dev)) return PTR_ERR(tdev->dev); diff --git a/drivers/staging/dgrp/dgrp_sysfs.c b/drivers/staging/dgrp/dgrp_sysfs.c index 7d1b36d..8cee9c8 100644 --- a/drivers/staging/dgrp/dgrp_sysfs.c +++ b/drivers/staging/dgrp/dgrp_sysfs.c @@ -273,7 +273,7 @@ void dgrp_create_node_class_sysfs_files(struct nd_struct *nd) sprintf(name, "node%ld", nd->nd_major); nd->nd_class_dev = device_create(dgrp_class, dgrp_class_nodes_dev, - MKDEV(0, nd->nd_major), NULL, name); + MKDEV(0, nd->nd_major), NULL, "%s", name); ret = sysfs_create_group(&nd->nd_class_dev->kobj, &dgrp_node_attribute_group); diff --git a/drivers/uwb/lc-dev.c b/drivers/uwb/lc-dev.c index 5241f1d..9209eaf 100644 --- a/drivers/uwb/lc-dev.c +++ b/drivers/uwb/lc-dev.c @@ -440,7 +440,7 @@ void uwbd_dev_onair(struct uwb_rc *rc, struct uwb_beca_e *bce) uwb_dev_init(uwb_dev); /* This sets refcnt to one, we own it */ uwb_dev->mac_addr = *bce->mac_addr; uwb_dev->dev_addr = bce->dev_addr; - dev_set_name(&uwb_dev->dev, macbuf); + dev_set_name(&uwb_dev->dev, "%s", macbuf); result = uwb_dev_add(uwb_dev, &rc->uwb_dev.dev, rc); if (result < 0) { dev_err(dev, "new device %s: cannot instantiate device\n", diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index c74e7aa..e3c2790 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -304,7 +304,7 @@ struct backlight_device *backlight_device_register(const char *name, new_bd->dev.class = backlight_class; new_bd->dev.parent = parent; new_bd->dev.release = bl_device_release; - dev_set_name(&new_bd->dev, name); + dev_set_name(&new_bd->dev, "%s", name); dev_set_drvdata(&new_bd->dev, devdata); /* Set default properties */ diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index 34fb6bd..3649fd9 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -219,7 +219,7 @@ struct lcd_device *lcd_device_register(const char *name, struct device *parent, new_ld->dev.class = lcd_class; new_ld->dev.parent = parent; new_ld->dev.release = lcd_device_release; - dev_set_name(&new_ld->dev, name); + dev_set_name(&new_ld->dev, "%s", name); dev_set_drvdata(&new_ld->dev, devdata); rc = device_register(&new_ld->dev); diff --git a/drivers/video/output.c b/drivers/video/output.c index 0d6f2cd..6285b97 100644 --- a/drivers/video/output.c +++ b/drivers/video/output.c @@ -97,7 +97,7 @@ struct output_device *video_output_register(const char *name, new_dev->props = op; new_dev->dev.class = &video_output_class; new_dev->dev.parent = dev; - dev_set_name(&new_dev->dev, name); + dev_set_name(&new_dev->dev, "%s", name); dev_set_drvdata(&new_dev->dev, devdata); ret_code = device_register(&new_dev->dev); if (ret_code) { diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c index 56cfaaa..8c9db16 100644 --- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -447,7 +447,7 @@ int xenbus_probe_node(struct xen_bus_type *bus, if (err) goto fail; - dev_set_name(&xendev->dev, devname); + dev_set_name(&xendev->dev, "%s", devname); /* Register with generic device framework. */ err = device_register(&xendev->dev); diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 5025174..d014ee5 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -515,7 +515,6 @@ EXPORT_SYMBOL(bdi_destroy); int bdi_setup_and_register(struct backing_dev_info *bdi, char *name, unsigned int cap) { - char tmp[32]; int err; bdi->name = name; @@ -524,8 +523,8 @@ int bdi_setup_and_register(struct backing_dev_info *bdi, char *name, if (err) return err; - sprintf(tmp, "%.28s%s", name, "-%d"); - err = bdi_register(bdi, NULL, tmp, atomic_long_inc_return(&bdi_seq)); + err = bdi_register(bdi, NULL, "%.28s-%ld", name, + atomic_long_inc_return(&bdi_seq)); if (err) { bdi_destroy(bdi); return err; diff --git a/sound/sound_core.c b/sound/sound_core.c index 359753f..45759f4 100644 --- a/sound/sound_core.c +++ b/sound/sound_core.c @@ -292,7 +292,7 @@ retry: } device_create(sound_class, dev, MKDEV(SOUND_MAJOR, s->unit_minor), - NULL, s->name+6); + NULL, "%s", s->name+6); return s->unit_minor; fail: -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/