Messages in this thread | | | Date | Tue, 2 Apr 2024 14:21:19 +0200 | From | Boris Brezillon <> | Subject | Re: [PATCH] drm/panthor: Fix off by one in panthor_fw_get_cs_iface() |
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On Tue, 2 Apr 2024 12:56:42 +0300 Dan Carpenter <dan.carpenter@linaro.org> wrote:
> The ->iface.streams[csg_slot][] array has MAX_CS_PER_CSG elements so > this > comparison needs to be >= to prevent an out of bounds access. > > Fixes: 2718d91816ee ("drm/panthor: Add the FW logical block") > Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
> --- > drivers/gpu/drm/panthor/panthor_fw.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/panthor/panthor_fw.c b/drivers/gpu/drm/panthor/panthor_fw.c > index 33c87a59834e..181395e2859a 100644 > --- a/drivers/gpu/drm/panthor/panthor_fw.c > +++ b/drivers/gpu/drm/panthor/panthor_fw.c > @@ -308,7 +308,7 @@ panthor_fw_get_csg_iface(struct panthor_device *ptdev, u32 csg_slot) > struct panthor_fw_cs_iface * > panthor_fw_get_cs_iface(struct panthor_device *ptdev, u32 csg_slot, u32 cs_slot) > { > - if (drm_WARN_ON(&ptdev->base, csg_slot >= MAX_CSGS || cs_slot > MAX_CS_PER_CSG)) > + if (drm_WARN_ON(&ptdev->base, csg_slot >= MAX_CSGS || cs_slot >= MAX_CS_PER_CSG)) > return NULL; > > return &ptdev->fw->iface.streams[csg_slot][cs_slot];
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