The patch titled
drivers/media: eliminate a NULL pointer dereference
has been added to the -mm tree. Its filename is
drivers-media-eliminate-a-null-pointer-dereference.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: drivers/media: eliminate a NULL pointer dereference
From: Julia Lawall <julia@xxxxxxx>
In each case, the print involves dereferencing a value that is NULL or is
near NULL.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E,E1;
identifier f;
statement S1,S2,S3;
@@
if ((E == NULL && ...) || ...)
{
... when != if (...) S1 else S2
when != E = E1
* E->f
... when any
return ...;
}
else S3
// </smpl>
Signed-off-by: Julia Lawall <julia@xxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/media/dvb/firewire/firedtv-1394.c | 2 +-
drivers/media/video/hdpvr/hdpvr-video.c | 2 +-
drivers/media/video/usbvision/usbvision-video.c | 3 +--
3 files changed, 3 insertions(+), 4 deletions(-)
diff -puN drivers/media/dvb/firewire/firedtv-1394.c~drivers-media-eliminate-a-null-pointer-dereference drivers/media/dvb/firewire/firedtv-1394.c
--- a/drivers/media/dvb/firewire/firedtv-1394.c~drivers-media-eliminate-a-null-pointer-dereference
+++ a/drivers/media/dvb/firewire/firedtv-1394.c
@@ -58,7 +58,7 @@ static void rawiso_activity_cb(struct hp
num = hpsb_iso_n_ready(iso);
if (!fdtv) {
- dev_err(fdtv->device, "received at unknown iso channel\n");
+ pr_err("received at unknown iso channel\n");
goto out;
}
diff -puN drivers/media/video/hdpvr/hdpvr-video.c~drivers-media-eliminate-a-null-pointer-dereference drivers/media/video/hdpvr/hdpvr-video.c
--- a/drivers/media/video/hdpvr/hdpvr-video.c~drivers-media-eliminate-a-null-pointer-dereference
+++ a/drivers/media/video/hdpvr/hdpvr-video.c
@@ -366,7 +366,7 @@ static int hdpvr_open(struct file *file)
dev = (struct hdpvr_device *)video_get_drvdata(video_devdata(file));
if (!dev) {
- v4l2_err(&dev->v4l2_dev, "open failing with with ENODEV\n");
+ pr_err("open failing with with ENODEV\n");
retval = -ENODEV;
goto err;
}
diff -puN drivers/media/video/usbvision/usbvision-video.c~drivers-media-eliminate-a-null-pointer-dereference drivers/media/video/usbvision/usbvision-video.c
--- a/drivers/media/video/usbvision/usbvision-video.c~drivers-media-eliminate-a-null-pointer-dereference
+++ a/drivers/media/video/usbvision/usbvision-video.c
@@ -1671,8 +1671,7 @@ static void __devexit usbvision_disconne
PDEBUG(DBG_PROBE, "");
if (usbvision == NULL) {
- dev_err(&usbvision->dev->dev,
- "%s: usb_get_intfdata() failed\n", __func__);
+ pr_err("%s: usb_get_intfdata() failed\n", __func__);
return;
}
_
Patches currently in -mm which might be from julia@xxxxxxx are
origin.patch
linux-next.patch
arch-x86-kernel-add-missing-spin_unlock.patch
arch-x86-kernel-add-missing-spin_unlock-fix2.patch
fs-btrfs-use-memdup_user.patch
fs-btrfs-use-err_cast.patch
drivers-media-use-memdup_user.patch
drivers-media-video-pvrusb2-add-missing-mutex_unlock.patch
drivers-video-omap2-displays-add-missing-mutex_unlock.patch
drivers-i2c-use-memdup_user.patch
arch-ia64-kvm-add-missing-spin_unlock.patch
drivers-ide-use-memdup_user.patch
fs-ubifs-use-err_cast.patch
drivers-net-wireless-prism54-use-memdup_user.patch
fs-ocfs2-dlm-add-missing-spin_unlock.patch
drivers-s390-net-use-memdup_user.patch
drivers-scsi-libsas-use-sam_good.patch
drivers-scsi-remove-unnecessary-null-test.patch
drivers-message-move-dereference-after-null-test.patch
drivers-scsi-correct-the-size-argument-to-kmalloc.patch
drivers-scsi-use-memdup_user.patch
drivers-block-use-memdup_user.patch
drivers-staging-dream-camera-use-memdup_user.patch
drivers-staging-vme-bridges-add-missing-unlocks.patch
drivers-usb-gadget-use-memdup_user.patch
mm-use-memdup_user.patch
mm-use-err_cast.patch
drivers-message-i2o-exec-osmc-add-missing-mutex_unlock.patch
drivers-char-n_gsmc-add-missing-spin_unlock_irqrestore.patch
drivers-usb-serial-eliminate-a-null-pointer-dereference.patch
arch-sparc-kernel-eliminate-what-looks-like-a-null-pointer-dereference.patch
drivers-dma-eliminate-a-null-pointer-dereference.patch
drivers-media-eliminate-a-null-pointer-dereference.patch
drivers-staging-eliminate-a-null-pointer-dereference.patch
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