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author | Ryan Roberts <ryan.roberts@arm.com> | 2023-06-02 12:29:46 +0300 |
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committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-10 02:25:55 +0300 |
commit | b3f78e74986546a6da5d28c24e627d95d17f79ec (patch) | |
tree | 7ec12d72f26a0d6492db565b2997f8aa0dc28da9 /mm/damon/vaddr.c | |
parent | 501b26510ae3bbdf9333b83addcd4e5c4214346d (diff) | |
download | linux-b3f78e74986546a6da5d28c24e627d95d17f79ec.tar.xz |
mm: vmalloc must set pte via arch code
Patch series "Fixes for pte encapsulation bypasses", v3.
A series to improve the encapsulation of pte entries by disallowing
non-arch code from directly dereferencing pte_t pointers.
This patch (of 4):
It is bad practice to directly set pte entries within a pte table.
Instead all modifications must go through arch-provided helpers such as
set_pte_at() to give the arch code visibility and allow it to check (and
potentially modify) the operation.
Link: https://lkml.kernel.org/r/20230602092949.545577-1-ryan.roberts@arm.com
Link: https://lkml.kernel.org/r/20230602092949.545577-2-ryan.roberts@arm.com
Fixes: 3e9a9e256b1e ("mm: add a vmap_pfn function")
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Acked-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/damon/vaddr.c')
0 files changed, 0 insertions, 0 deletions