Messages in this thread Patch in this message | | | Subject | [PATCH] pte_alloc_kernel needs additional check | From | Paul Larson <> | Date | 24 Feb 2003 15:54:39 -0600 |
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This applies against 2.5.63. pte_alloc_kernel needs a check for pmd_present(*pmd) at the end.
Thanks, Paul Larson
--- linux-2.5.63/mm/memory.c Mon Feb 24 13:05:31 2003 +++ linux-2.5.63-fix/mm/memory.c Mon Feb 24 15:45:05 2003 @@ -186,7 +186,9 @@ pmd_populate_kernel(mm, pmd, new); } out: - return pte_offset_kernel(pmd, address); + if (pmd_present(*pmd)) + return pte_offset_kernel(pmd, address); + return NULL; } #define PTE_TABLE_MASK ((PTRS_PER_PTE-1) * sizeof(pte_t)) #define PMD_TABLE_MASK ((PTRS_PER_PMD-1) * sizeof(pmd_t))
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