From 68a24ad6b0828bdbc60cfb48cb76a137040a3be2 Mon Sep 17 00:00:00 2001 From: cognet Date: Wed, 22 Mar 2006 22:11:10 +0000 Subject: [PATCH] MFp4: More special casing of when vector_page == 0x00000000 : catch attempts to write to vector_page earlier in pmap_fault_fixup(), and deny it. --- sys/arm/arm/pmap.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/arm/arm/pmap.c b/sys/arm/arm/pmap.c index abf487d04a35..30f003c72f4e 100644 --- a/sys/arm/arm/pmap.c +++ b/sys/arm/arm/pmap.c @@ -2021,6 +2021,8 @@ pmap_fault_fixup(pmap_t pm, vm_offset_t va, vm_prot_t ftype, int user) */ if (user && (pte & L2_S_PROT_U) == 0) goto out; + if (va == vector_page) + goto out; pa = l2pte_pa(pte);