svn commit: r195605 - user/kmacy/releng_7_2_fcs_1/sys/vm
Kip Macy
kmacy at FreeBSD.org
Sat Jul 11 03:00:37 UTC 2009
Author: kmacy
Date: Sat Jul 11 03:00:37 2009
New Revision: 195605
URL: http://svn.freebsd.org/changeset/base/195605
Log:
- don't map kernel thread stacks executable
- exclude vnode pager buffers from core dumps
Modified:
user/kmacy/releng_7_2_fcs_1/sys/vm/vm_glue.c
user/kmacy/releng_7_2_fcs_1/sys/vm/vnode_pager.c
Modified: user/kmacy/releng_7_2_fcs_1/sys/vm/vm_glue.c
==============================================================================
--- user/kmacy/releng_7_2_fcs_1/sys/vm/vm_glue.c Sat Jul 11 02:58:36 2009 (r195604)
+++ user/kmacy/releng_7_2_fcs_1/sys/vm/vm_glue.c Sat Jul 11 03:00:37 2009 (r195605)
@@ -372,7 +372,8 @@ vm_thread_new(struct thread *td, int pag
m->valid = VM_PAGE_BITS_ALL;
}
VM_OBJECT_UNLOCK(ksobj);
- pmap_qenter(ks, ma, pages);
+ pmap_qenter_prot(ks, ma, pages,
+ (VM_PROT_READ|VM_PROT_WRITE));
return (1);
}
@@ -464,7 +465,8 @@ vm_thread_swapin(struct thread *td)
vm_page_wakeup(m);
}
VM_OBJECT_UNLOCK(ksobj);
- pmap_qenter(td->td_kstack, ma, pages);
+ pmap_qenter_prot(td->td_kstack, ma, pages,
+ (VM_PROT_READ|VM_PROT_WRITE));
cpu_thread_swapin(td);
}
Modified: user/kmacy/releng_7_2_fcs_1/sys/vm/vnode_pager.c
==============================================================================
--- user/kmacy/releng_7_2_fcs_1/sys/vm/vnode_pager.c Sat Jul 11 02:58:36 2009 (r195604)
+++ user/kmacy/releng_7_2_fcs_1/sys/vm/vnode_pager.c Sat Jul 11 03:00:37 2009 (r195605)
@@ -900,7 +900,8 @@ vnode_pager_generic_getpages(vp, m, byte
/*
* and map the pages to be read into the kva
*/
- pmap_qenter(kva, m, count);
+ pmap_qenter_prot(kva, m, count,
+ (VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXCLUDE));
/* build a minimal buffer header */
bp->b_iocmd = BIO_READ;
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