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cramfs: fix incorrect physical page address calculation

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[ Upstream commit 20a8e0454d ]

Commit 21aa65bf82 ("mm: remove callers of pfn_t functionality")
incorrectly replaced the pfn with the physical address when calling
vmf_insert_mixed().  Instead the phys_to_pfn_t() call should have been
replaced with PHYS_PFN().

Found by inspection after a similar issue was noted in fuse virtio_fs.

Link: https://lkml.kernel.org/r/20250923005333.3165032-1-apopple@nvidia.com
Fixes: 21aa65bf82 ("mm: remove callers of pfn_t functionality")
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Haiyue Wang <haiyuewa@163.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alistair Popple 2025-09-23 10:53:33 +10:00 committed by Greg Kroah-Hartman
parent 55a70e1de7
commit 64dfd595d3
1 changed files with 1 additions and 1 deletions
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2
fs/cramfs/inode.c
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@ -412,7 +412,7 @@ static int cramfs_physmem_mmap(struct file *file, struct vm_area_struct *vma)
vm_fault_t vmf;
unsigned long off = i * PAGE_SIZE;
vmf = vmf_insert_mixed(vma, vma->vm_start + off,
address + off);
PHYS_PFN(address + off));
if (vmf & VM_FAULT_ERROR)
ret = vm_fault_to_errno(vmf, 0);
}