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Sender: Guenter Roeck <groeck7@gmail.com>
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Date: Thu, 29 Feb 2024 10:15:49 -0800
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Subject: Re: [PATCH 5.15 000/245] 5.15.150-rc1 review
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To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org
Cc: patches@lists.linux.dev, linux-kernel@vger.kernel.org,
 torvalds@linux-foundation.org, akpm@linux-foundation.org, shuah@kernel.org,
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References: <20240227131615.098467438@linuxfoundation.org>
From: Guenter Roeck <linux@roeck-us.net>
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In-Reply-To: <20240227131615.098467438@linuxfoundation.org>
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On 2/27/24 05:23, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.150 release.
> There are 245 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu, 29 Feb 2024 13:15:36 +0000.
> Anything received after that time might be too late.
> 

$ git grep dma_fence_allocate_private_stub
drivers/dma-buf/dma-fence-unwrap.c:             return dma_fence_allocate_private_stub(timestamp);
                                                                                        ^^^^^^^^^
drivers/dma-buf/dma-fence-unwrap.c:             tmp = dma_fence_allocate_private_stub(ktime_get());
                                                                                       ^^^^^^^^^^^
drivers/dma-buf/dma-fence.c: * dma_fence_allocate_private_stub - return a private, signaled fence
drivers/dma-buf/dma-fence.c:struct dma_fence *dma_fence_allocate_private_stub(void)
                                                                               ^^^^
drivers/dma-buf/dma-fence.c:EXPORT_SYMBOL(dma_fence_allocate_private_stub);
drivers/gpu/drm/drm_syncobj.c:  struct dma_fence *fence = dma_fence_allocate_private_stub();
include/linux/dma-fence.h:struct dma_fence *dma_fence_allocate_private_stub(void);
                                                                             ^^^^

This was introduced with commit 4e82b9c11d3cd ("dma-buf: add dma_fence_timestamp helper") in
v5.15.149. The additional parameter to dma_fence_allocate_private_stub() was introduced in the
upstream kernel with commit f781f661e8c99 ("dma-buf: keep the signaling time of merged fences
v3") which is missing in v5.15.y.

Guenter