lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <f889f994-d2cd-fedc-8c95-9c8501037809@amd.com>
Date:   Wed, 26 Apr 2023 13:05:33 +0200
From:   Christian König <christian.koenig@....com>
To:     Chia-I Wu <olvaffe@...il.com>, dri-devel@...ts.freedesktop.org
Cc:     stable@...r.kernel.org, Alex Deucher <alexander.deucher@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, amd-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/amdgpu: add a missing lock for AMDGPU_SCHED

Am 26.04.23 um 08:17 schrieb Chia-I Wu:
> mgr->ctx_handles should be protected by mgr->lock.
>
> v2: improve commit message
>
> Signed-off-by: Chia-I Wu <olvaffe@...il.com>
> Cc: stable@...r.kernel.org

Please don't manually CC stable@...r.kernel.org while sending patches 
out, let us maintainers push that upstream with the appropriate tag and 
Greg picking it up from there.

A Fixes tag and figuring out to which stable versions this needs to be 
backported are nice to have as well, but Alex and I can take care of 
that as well.

Apart from that the technical side of the patch is Reviewed-by: 
Christian König <christian.koenig@....com>.

Regards,
Christian.

> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
> index e9b45089a28a6..863b2a34b2d64 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
> @@ -38,6 +38,7 @@ static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
>   {
>   	struct fd f = fdget(fd);
>   	struct amdgpu_fpriv *fpriv;
> +	struct amdgpu_ctx_mgr *mgr;
>   	struct amdgpu_ctx *ctx;
>   	uint32_t id;
>   	int r;
> @@ -51,8 +52,11 @@ static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
>   		return r;
>   	}
>   
> -	idr_for_each_entry(&fpriv->ctx_mgr.ctx_handles, ctx, id)
> +	mgr = &fpriv->ctx_mgr;
> +	mutex_lock(&mgr->lock);
> +	idr_for_each_entry(&mgr->ctx_handles, ctx, id)
>   		amdgpu_ctx_priority_override(ctx, priority);
> +	mutex_unlock(&mgr->lock);
>   
>   	fdput(f);
>   	return 0;

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ