[moderation/CI] Re: vfio/pci: Allow MMIO regions to be exported through dma-buf

[syzbot ci]

syzbot ci has tested the following series

[v6] vfio/pci: Allow MMIO regions to be exported through dma-buf
https://lore.kernel.org/all/20251102-dmabuf-vfi...@nvidia.com
* [PATCH v6 01/11] PCI/P2PDMA: Separate the mmap() support from the core logic
* [PATCH v6 02/11] PCI/P2PDMA: Simplify bus address mapping API
* [PATCH v6 03/11] PCI/P2PDMA: Refactor to separate core P2P functionality from memory allocation
* [PATCH v6 04/11] PCI/P2PDMA: Provide an access to pci_p2pdma_map_type() function
* [PATCH v6 05/11] PCI/P2PDMA: Document DMABUF model
* [PATCH v6 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine
* [PATCH v6 07/11] vfio: Export vfio device get and put registration helpers
* [PATCH v6 08/11] vfio/pci: Share the core device pointer while invoking feature functions
* [PATCH v6 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default
* [PATCH v6 10/11] vfio/pci: Add dma-buf export support for MMIO regions
* [PATCH v6 11/11] vfio/nvgrace: Support get_dmabuf_phys

and found the following issue:
kernel build error

Full report is available here:
https://ci.syzbot.org/series/3957e140-61bf-47f1-a89e-45a4665d3d99

***

kernel build error

tree: kvm-next
URL: https://kernel.googlesource.com/pub/scm/virt/kvm/kvm/
base: 6b36119b94d0b2bb8cea9d512017efafd461d6ac
arch: amd64
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
config: https://ci.syzbot.org/builds/2b2d6598-2cb2-4c0a-8142-f4918eeda555/config

drivers/dma-buf/dma-buf.c:1393:10: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1399:11: error: call to undeclared function 'dma_map_phys'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
drivers/dma-buf/dma-buf.c:1401:10: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1441:6: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1444:4: error: call to undeclared function 'dma_unmap_phys'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
drivers/dma-buf/dma-buf.c:1445:34: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1476:6: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1481:4: error: call to undeclared function 'dma_unmap_phys'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
drivers/dma-buf/dma-buf.c:1482:34: error: use of undeclared identifier 'DMA_ATTR_MMIO'

***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syz...@syzkaller.appspotmail.com

---
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If the report looks fine to you, reply with:
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[syzbot ci]

syzbot ci has tested the following series

[v7] vfio/pci: Allow MMIO regions to be exported through dma-buf
https://lore.kernel.org/all/20251106-dmabuf-vfi...@nvidia.com
* [PATCH v7 01/11] PCI/P2PDMA: Separate the mmap() support from the core logic
* [PATCH v7 02/11] PCI/P2PDMA: Simplify bus address mapping API
* [PATCH v7 03/11] PCI/P2PDMA: Refactor to separate core P2P functionality from memory allocation
* [PATCH v7 04/11] PCI/P2PDMA: Provide an access to pci_p2pdma_map_type() function
* [PATCH v7 05/11] PCI/P2PDMA: Document DMABUF model
* [PATCH v7 06/11] dma-buf: provide phys_vec to scatter-gather mapping routine
* [PATCH v7 07/11] vfio: Export vfio device get and put registration helpers
* [PATCH v7 08/11] vfio/pci: Share the core device pointer while invoking feature functions
* [PATCH v7 09/11] vfio/pci: Enable peer-to-peer DMA transactions by default
* [PATCH v7 10/11] vfio/pci: Add dma-buf export support for MMIO regions
* [PATCH v7 11/11] vfio/nvgrace: Support get_dmabuf_phys

and found the following issue:
kernel build error

Full report is available here:

https://ci.syzbot.org/series/83488872-f468-4aa4-bc80-437e554e8aeb

***

kernel build error

tree: kvm-next
URL: https://kernel.googlesource.com/pub/scm/virt/kvm/kvm/
base: 6b36119b94d0b2bb8cea9d512017efafd461d6ac
arch: amd64
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

config: https://ci.syzbot.org/builds/481ad68d-be80-4780-b856-58d29aacf33c/config

drivers/dma-buf/dma-buf.c:1393:10: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1399:11: error: call to undeclared function 'dma_map_phys'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
drivers/dma-buf/dma-buf.c:1401:10: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1441:6: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1444:4: error: call to undeclared function 'dma_unmap_phys'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
drivers/dma-buf/dma-buf.c:1445:34: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1476:6: error: use of undeclared identifier 'DMA_ATTR_MMIO'
drivers/dma-buf/dma-buf.c:1481:4: error: call to undeclared function 'dma_unmap_phys'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
drivers/dma-buf/dma-buf.c:1482:34: error: use of undeclared identifier 'DMA_ATTR_MMIO'

***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syz...@syzkaller.appspotmail.com

---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzk...@googlegroups.com.

The email will later be sent to:

[ak...@linux-foundation.org al...@shazbot.org ama...@fb.com ank...@nvidia.com ax...@kernel.dk bhel...@google.com christia...@amd.com cor...@lwn.net dri-...@lists.freedesktop.org gusta...@kernel.org io...@lists.linux.dev j...@nvidia.com j...@ziepe.ca jo...@8bytes.org ke...@kernel.org kevin...@intel.com kj...@nvidia.com k...@vger.kernel.org le...@kernel.org linaro...@lists.linaro.org linux...@vger.kernel.org linu...@vger.kernel.org linux-h...@vger.kernel.org linux-...@vger.kernel.org linux...@vger.kernel.org linu...@kvack.org linu...@vger.kernel.org log...@deltatee.com m.szyp...@samsung.com mo...@nvidia.com nico...@nvidia.com robin....@arm.com skolot...@nvidia.com sumit....@linaro.org vivek.k...@intel.com wi...@kernel.org yis...@nvidia.com]