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From: Lizhi Hou <lizhi.hou@amd.com>
To: Taimuraz Kaitmazov <taimuraz@kaitmazov.com>,
	Min Ma <mamin506@gmail.com>, Oded Gabbay <ogabbay@kernel.org>
Cc: "Christian König" <christian.koenig@amd.com>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Alex Deucher" <alexdeucher@gmail.com>,
	"Max Zhen" <max.zhen@amd.com>,
	"Sonal Santan" <sonal.santan@amd.com>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org
Subject: Re: [PATCH v5 3/5] accel/amdxdna: do not warn when a sync request is rejected
Date: Thu, 17 Sep 2026 13:24:50 -0700	[thread overview]
Message-ID: <280ce606-90f4-ed96-449a-5fe2fa08de68@amd.com> (raw)
In-Reply-To: <99a26a5a-a42a-f0b1-eaca-041629a7c103@amd.com>

Applied to drm-misc-next

On 9/17/26 08:55, Lizhi Hou wrote:
>
> On 8/19/26 15:44, Taimuraz Kaitmazov wrote:
>> amdxdna_drm_sync_bo_ioctl() answers a failed amdxdna_flush_bo() with
>> drm_WARN(). Both of that function's error returns are decided by the
>> ioctl's arguments, so SYNC_BO with an offset past the end of the BO
>> splats and taints the kernel from an unprivileged caller.
>>
>> Log it at debug level, since the same caller can repeat it.
>>
>> Signed-off-by: Taimuraz Kaitmazov <taimuraz@kaitmazov.com>
>> ---
>>   drivers/accel/amdxdna/amdxdna_gem.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/accel/amdxdna/amdxdna_gem.c 
>> b/drivers/accel/amdxdna/amdxdna_gem.c
>> index 77a9493cd7ba..0e0f844526ca 100644
>> --- a/drivers/accel/amdxdna/amdxdna_gem.c
>> +++ b/drivers/accel/amdxdna/amdxdna_gem.c
>> @@ -1310,7 +1310,7 @@ int amdxdna_drm_sync_bo_ioctl(struct drm_device 
>> *dev,
>>           amdxdna_gem_unpin(abo);
>>             if (ret) {
>> -            drm_WARN(&xdna->ddev, 1, "Can not get flush memory");
>> +            XDNA_DBG(xdna, "Flush BO %d failed, ret %d", 
>> args->handle, ret);
> Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
>>               goto put_obj;
>>           }
>>       }

  reply	other threads:[~2026-09-17 20:24 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20260819224458.257346-1-taimuraz@kaitmazov.com>
     [not found] ` <20260819224458.257346-5-taimuraz@kaitmazov.com>
2026-09-02 15:39   ` [PATCH v5 4/5] accel/amdxdna: refuse to flush an imported BO Lizhi Hou
     [not found] ` <20260819224458.257346-4-taimuraz@kaitmazov.com>
2026-09-17 15:55   ` [PATCH v5 3/5] accel/amdxdna: do not warn when a sync request is rejected Lizhi Hou
2026-09-17 20:24     ` Lizhi Hou [this message]
     [not found] ` <20260819224458.257346-6-taimuraz@kaitmazov.com>
2026-09-17 16:11   ` [PATCH v5 5/5] accel/amdxdna: do not fail a sync for a BO with no debug context Lizhi Hou
2026-09-17 20:25     ` Lizhi Hou

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