svn commit: r198986 - head/lib/libkvm
John Baldwin
jhb at FreeBSD.org
Fri Nov 6 13:10:13 UTC 2009
Author: jhb
Date: Fri Nov 6 13:10:12 2009
New Revision: 198986
URL: http://svn.freebsd.org/changeset/base/198986
Log:
Fix a copy-paste bug when reading data from the last 3 (7 for PAE) bytes of
a page mapped by a large page in the kernel.
Submitted by: Dorr H. Clark dclark of engr.scu.edu
MFC after: 1 week
Modified:
head/lib/libkvm/kvm_i386.c
Modified: head/lib/libkvm/kvm_i386.c
==============================================================================
--- head/lib/libkvm/kvm_i386.c Fri Nov 6 12:52:51 2009 (r198985)
+++ head/lib/libkvm/kvm_i386.c Fri Nov 6 13:10:12 2009 (r198986)
@@ -295,9 +295,9 @@ _kvm_vatop(kvm_t *kd, u_long va, off_t *
#define PG_FRAME4M (~PAGE4M_MASK)
pde_pa = ((u_long)pde & PG_FRAME4M) + (va & PAGE4M_MASK);
s = _kvm_pa2off(kd, pde_pa, &ofs);
- if (s < sizeof pde) {
- _kvm_syserr(kd, kd->program,
- "_kvm_vatop: pde_pa not found");
+ if (s == 0) {
+ _kvm_err(kd, kd->program,
+ "_kvm_vatop: 4MB page address not in dump");
goto invalid;
}
*pa = ofs;
@@ -391,9 +391,9 @@ _kvm_vatop_pae(kvm_t *kd, u_long va, off
#define PG_FRAME2M (~PAGE2M_MASK)
pde_pa = ((u_long)pde & PG_FRAME2M) + (va & PAGE2M_MASK);
s = _kvm_pa2off(kd, pde_pa, &ofs);
- if (s < sizeof pde) {
- _kvm_syserr(kd, kd->program,
- "_kvm_vatop_pae: pde_pa not found");
+ if (s == 0) {
+ _kvm_err(kd, kd->program,
+ "_kvm_vatop: 2MB page address not in dump");
goto invalid;
}
*pa = ofs;
More information about the svn-src-all
mailing list