Fix a bug in the PMD address calculation where the operator was incorrectly using '+' instead of '*'. This caused the PMD index to be added as an offset rather than multiplied by the entry size, resulting in incorrect page table traversal for 4-level 4KB paging. Signed-off-by: Rui Qi <qirui.001(a)bytedance.com&gt; --- riscv64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/riscv64.c b/riscv64.c index eceae70c2377..bfe1fb88621a 100644 --- a/riscv64.c +++ b/riscv64.c @@ -1241,7 +1241,7 @@ riscv64_vtop_4level_4k(ulong *pgd, ulong vaddr, physaddr_t *paddr, int verbose) /* PMD */ FILL_PMD(PAGEBASE(pmd_base), PHYSADDR, PAGESIZE()); - pmd_addr = pmd_base + sizeof(pmd_t) + pmd_index_l4_4k(vaddr); + pmd_addr = pmd_base + sizeof(pmd_t) * pmd_index_l4_4k(vaddr); pmd_val = ULONG(machdep->pmd + PAGEOFFSET(pmd_addr)); if (verbose) fprintf(fp, " PMD: %016lx => %016lx\n", pmd_addr, pmd_val); -- 2.20.1