arm64: mm: fix p?d_leaf()

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The pmd_leaf() is used to test a leaf mapped PMD, however, it misses
the PROT_NONE mapped PMD on arm64.  Fix it.  A real world issue [1]
caused by this was reported by Qian Cai. Also fix pud_leaf().

Link: https://patchwork.kernel.org/comment/24798260/ [1]
Fixes: 8aa82df3c1 ("arm64: mm: add p?d_leaf() definitions")
Reported-by: Qian Cai <quic_qiancai@quicinc.com>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Link: https://lore.kernel.org/r/20220422060033.48711-1-songmuchun@bytedance.com
Signed-off-by: Will Deacon <will@kernel.org>

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Muchun Song 2022-04-22 14:00:33 +08:00 • committed by Will Deacon

parent 0ff74a23e0

commit 23bc8f69f0

1 changed files with 2 additions and 2 deletions

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arch/arm64/include/asm/pgtable.h

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