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| author | Devendra Naga <devendra.aaru@gmail.com> | 2012-07-07 11:22:15 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-07-20 04:05:25 +0200 |
| commit | 4dbdf0aea9585add9359e7ca5535256f866ec85c (patch) | |
| tree | 145d64cae53ae09aa5e74c3774f89cfd3e4a1f25 | |
| parent | drm/radeon: Try harder to avoid HW cursor ending on a multiple of 128 columns. (diff) | |
| download | linux-4dbdf0aea9585add9359e7ca5535256f866ec85c.tar.xz linux-4dbdf0aea9585add9359e7ca5535256f866ec85c.zip | |
drm/mgag200: fix null pointer dereference
we are referencing the pointer after doing alloc_apertures,
as alloc_apertures kzallocs, the kzalloc may fail and we get a NULL.
so we need to check for NULL before we dereference this pointer
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_drv.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index 93e832d6c328..ea1024d79974 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.c +++ b/drivers/gpu/drm/mgag200/mgag200_drv.c @@ -47,6 +47,9 @@ static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev) bool primary = false; ap = alloc_apertures(1); + if (!ap) + return; + ap->ranges[0].base = pci_resource_start(pdev, 0); ap->ranges[0].size = pci_resource_len(pdev, 0); |