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Date: Sat, 7 Jul 2012 14:52:15 +0530 From: Devendra Naga <devendra.aaru@...il.com> To: David Airlie <airlied@...ux.ie>, Dave Airlie <airlied@...hat.com>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org Cc: Devendra Naga <devendra.aaru@...il.com> Subject: [PATCH] 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@...il.com> --- drivers/gpu/drm/mgag200/mgag200_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.c b/drivers/gpu/drm/mgag200/mgag200_drv.c index 93e832d..ea1024d 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); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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