[PATCH v3] drm/amdgpu: off by one in amdgpu_device_attr_create_groups() error handling

[Alex Deucher]

Applied.  Thanks!

Alex

On Wed, May 20, 2020 at 11:33 AM Christian König <christian.koenig at amd.com>
wrote:

> Am 20.05.20 um 17:31 schrieb Ruhl, Michael J:
> >> -----Original Message-----
> >> From: Dan Carpenter <dan.carpenter at oracle.com>
> >> Sent: Wednesday, May 20, 2020 11:26 AM
> >> To: Alex Deucher <alexander.deucher at amd.com>; Kevin Wang
> >> <kevin1.wang at amd.com>; Ruhl, Michael J <michael.j.ruhl at intel.com>
> >> Cc: Christian König <christian.koenig at amd.com>; David Airlie
> >> <airlied at linux.ie>; Daniel Vetter <daniel at ffwll.ch>; Evan Quan
> >> <evan.quan at amd.com>; Rui Huang <ray.huang at amd.com>; Kenneth Feng
> >> <kenneth.feng at amd.com>; Yintian Tao <yttao at amd.com>; Hawking Zhang
> >> <Hawking.Zhang at amd.com>; amd-gfx at lists.freedesktop.org; dri-
> >> devel at lists.freedesktop.org; linux-kernel at vger.kernel.org; kernel-
> >> janitors at vger.kernel.org
> >> Subject: [PATCH v3] drm/amdgpu: off by one in
> >> amdgpu_device_attr_create_groups() error handling
> >>
> >> This loop in the error handling code should start a "i - 1" and end at
> >> "i == 0".  Currently it starts a "i" and ends at "i == 1".  The result
> >> is that it removes one attribute that wasn't created yet, and leaks the
> >> zeroeth attribute.
> >>
> >> Fixes: 4e01847c38f7 ("drm/amdgpu: optimize amdgpu device attribute
> code")
> >> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
> >> ---
> >> v2: style change
> >> v3: Fix embarrassing typo in the subject
> > 😊
> >
> > Acked-by: Michael J. Ruhl <michael.j.ruhl at intel.com>
>
> Reviewed-by: Christian König <christian.koenig at amd.com>
>
> >
> > m
> >> drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c           | 3 +--
> >> 1 files changed, 1 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> >> b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> >> index b75362bf0742..e809534fabd4 100644
> >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> >> @@ -1942,9 +1942,8 @@ static int amdgpu_device_attr_create_groups(struct
> >> amdgpu_device *adev,
> >>      return 0;
> >>
> >> failed:
> >> -    for (; i > 0; i--) {
> >> +    while (i--)
> >>              amdgpu_device_attr_remove(adev, &attrs[i]);
> >> -    }
> >>
> >>      return ret;
> >> }
>
> _______________________________________________
> dri-devel mailing list
> dri-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20200520/e208425b/attachment.htm>