Subject: Re: linux-next: build failure after merge of the drm-misc tree

From: Leon Romanovsky <[email-masked]>
Date: Mon, 23 Feb 2026 21:57:15 +0200

On Mon, Feb 23, 2026 at 06:48:46PM +0000, Mark Brown wrote:
> Hi all,
> 
> After merging the drm-misc tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> /tmp/next/build/drivers/infiniband/core/ib_core_uverbs.c: In function 'rdma_user_mmap_entry_remove':
> /tmp/next/build/drivers/infiniband/core/ib_core_uverbs.c:249:17: error: implicit declaration of function 'dma_buf_move_notify' [-Wimplicit-function-declaration]
>   249 |                 dma_buf_move_notify(uverbs_dmabuf->dmabuf);
>       |                 ^~~~~~~~~~~~~~~~~~~
> make[6]: *** [/tmp/next/build/scripts/Makefile.build:289: drivers/infiniband/core/ib_core_uverbs.o] Error 1
> make[6]: *** Waiting for unfinished jobs....
> /tmp/next/build/drivers/infiniband/core/uverbs_std_types_dmabuf.c: In function 'uverbs_dmabuf_fd_destroy_uobj':
> /tmp/next/build/drivers/infiniband/core/uverbs_std_types_dmabuf.c:170:17: error: implicit declaration of function 'dma_buf_move_notify' [-Wimplicit-function-declaration]
>   170 |                 dma_buf_move_notify(uverbs_dmabuf->dmabuf);
>       |                 ^~~~~~~~~~~~~~~~~~~
> make[6]: *** [/tmp/next/build/scripts/Makefile.build:289: drivers/infiniband/core/uverbs_std_types_dmabuf.o] Error 1
> 
> Caused by commit
> 
>   95308225e5bae (dma-buf: Rename dma_buf_move_notify() to dma_buf_invalidate_mappings())
> 
> interacting with
> 
>   0ac6f4056c4a2 (RDMA/uverbs: Add DMABUF object type and operations)
> 
> from Linus' tree.  I have fixed this up as below and can carry as
> needed.
> 
> From 89e7d4987e08a46f2db151cebba258a1bc01d628 Mon Sep 17 00:00:00 2001
> From: Mark Brown <[email-masked]>
> Date: Mon, 23 Feb 2026 18:27:51 +0000
> Subject: [PATCH] RDMA/uverbs: Update for semantic conflict with drm-misc
> 
> /tmp/next/build/drivers/infiniband/core/ib_core_uverbs.c: In function 'rdma_user_mmap_entry_remove':
> /tmp/next/build/drivers/infiniband/core/ib_core_uverbs.c:249:17: error: implicit declaration of function 'dma_buf_move_notify' [-Wimplicit-function-declaration]
>   249 |                 dma_buf_move_notify(uverbs_dmabuf->dmabuf);
>       |                 ^~~~~~~~~~~~~~~~~~~
> 
> Signed-off-by: Mark Brown <[email-masked]>
> ---
>  drivers/infiniband/core/ib_core_uverbs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

The change is correct. The
dma_buf_move_notify->dma_buf_invalidate_mappings rename was merged to
DRM tree before merge window and ib_core_uverbs change was brought
during merge window from RDMA tree.

Christian,

You should take this fix to your tree. RDMA tree doesn't have rename patches
yet.

Thanks

> 
> diff --git a/drivers/infiniband/core/ib_core_uverbs.c b/drivers/infiniband/core/ib_core_uverbs.c
> index d3836a62a0049..d6e99c79cf183 100644
> --- a/drivers/infiniband/core/ib_core_uverbs.c
> +++ b/drivers/infiniband/core/ib_core_uverbs.c
> @@ -246,7 +246,7 @@ void rdma_user_mmap_entry_remove(struct rdma_user_mmap_entry *entry)
>  		dma_resv_lock(uverbs_dmabuf->dmabuf->resv, NULL);
>  		list_del(&uverbs_dmabuf->dmabufs_elm);
>  		uverbs_dmabuf->revoked = true;
> -		dma_buf_move_notify(uverbs_dmabuf->dmabuf);
> +		dma_buf_invalidate_mappings(uverbs_dmabuf->dmabuf);
>  		dma_resv_wait_timeout(uverbs_dmabuf->dmabuf->resv,
>  				      DMA_RESV_USAGE_BOOKKEEP, false,
>  				      MAX_SCHEDULE_TIMEOUT);
> diff --git a/drivers/infiniband/core/uverbs_std_types_dmabuf.c b/drivers/infiniband/core/uverbs_std_types_dmabuf.c
> index dfdfcd1d1a446..149220a1599cf 100644
> --- a/drivers/infiniband/core/uverbs_std_types_dmabuf.c
> +++ b/drivers/infiniband/core/uverbs_std_types_dmabuf.c
> @@ -167,7 +167,7 @@ static void uverbs_dmabuf_fd_destroy_uobj(struct ib_uobject *uobj,
>         if (!uverbs_dmabuf->revoked) {
>                 uverbs_dmabuf->revoked = true;
>                 list_del(&uverbs_dmabuf->dmabufs_elm);
> -               dma_buf_move_notify(uverbs_dmabuf->dmabuf);
> +               dma_buf_invalidate_mappings(uverbs_dmabuf->dmabuf);
>                 dma_resv_wait_timeout(uverbs_dmabuf->dmabuf->resv,
>                                       DMA_RESV_USAGE_BOOKKEEP, false,
>                                       MAX_SCHEDULE_TIMEOUT);
> 
> -- 
> 2.47.3
>