[Crash-utility] [Resend][PATCH] RISCV64: fix pmd address calculation in riscv64_vtop_4level_4k
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>
---
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