The branch stable/13 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=380736a95d3d6d5bec929936b08a0d998a660e39
commit 380736a95d3d6d5bec929936b08a0d998a660e39 Author: Mark Johnston <[email protected]> AuthorDate: 2021-08-10 20:23:42 +0000 Commit: Mark Johnston <[email protected]> CommitDate: 2021-11-02 22:17:58 +0000 amd64 pmap: Pre-set PG_M on 2MB KASAN shadow map entries Also remove a redundant assertion in pmap_kasan_enter(). Reviewed by: alc, kib Sponsored by: The FreeBSD Foundation (cherry picked from commit 4fd450a87df015fe85cadfac0e22c73e3c878d24) --- sys/amd64/amd64/pmap.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 62bc1bb22e96..a1f3a5cdc650 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -11340,7 +11340,7 @@ pmap_kasan_enter(vm_offset_t va) m = pmap_kasan_enter_alloc_2m(); if (m != NULL) { *pde = (pd_entry_t)(VM_PAGE_TO_PHYS(m) | X86_PG_RW | - X86_PG_PS | X86_PG_V | pg_nx); + X86_PG_PS | X86_PG_V | X86_PG_A | X86_PG_M | pg_nx); } else { m = pmap_kasan_enter_alloc_4k(); *pde = (pd_entry_t)(VM_PAGE_TO_PHYS(m) | X86_PG_RW | @@ -11352,8 +11352,6 @@ pmap_kasan_enter(vm_offset_t va) pte = pmap_pde_to_pte(pde, va); if ((*pte & X86_PG_V) != 0) return; - KASSERT((*pte & X86_PG_V) == 0, - ("%s: shadow address %#lx is already mapped", __func__, va)); m = pmap_kasan_enter_alloc_4k(); *pte = (pt_entry_t)(VM_PAGE_TO_PHYS(m) | X86_PG_RW | X86_PG_V | X86_PG_M | X86_PG_A | pg_nx);
