diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2013-07-07 18:59:37 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2013-07-07 18:59:37 +0000 |
| commit | 279c14a4c9ac668ee2c0c763431496ad6ac9b9a4 (patch) | |
| tree | 2c53d49c6b9ce6fd9fcf01c6b86fd1bbfe188f48 | |
| parent | ada6f177ee747a36bc6328a6d80da00bb220a7d4 (diff) | |
Fix pmap_extract() to actually only return TRUE for mappings which have the
valid bit set; can't believe this went unnoticed for so long.
This fixes uvm_km_pgremove_intrsafe panics when pool_put()'ing items in pools
for larger-than-a-page-items at shutdown time.
| -rw-r--r-- | sys/arch/vax/vax/pmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/arch/vax/vax/pmap.c b/sys/arch/vax/vax/pmap.c index d6bc1bd89cb..e1e6464a519 100644 --- a/sys/arch/vax/vax/pmap.c +++ b/sys/arch/vax/vax/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.58 2013/07/03 19:21:55 miod Exp $ */ +/* $OpenBSD: pmap.c,v 1.59 2013/07/07 18:59:36 miod Exp $ */ /* $NetBSD: pmap.c,v 1.74 1999/11/13 21:32:25 matt Exp $ */ /* * Copyright (c) 1994, 1998, 1999 Ludd, University of Lule}, Sweden. @@ -869,7 +869,7 @@ if(startpmapdebug)printf("pmap_extract: pmap %p, va %lx\n",pmap, va); pte = (int *)pmap->pm_p1br; } - if ((*kvtopte(&pte[sva]) & PG_FRAME) != 0) { + if ((*kvtopte(&pte[sva]) & PG_V) && (pte[sva] & PG_V)) { *pap = ((pte[sva] & PG_FRAME) << VAX_PGSHIFT) | (va & VAX_PGOFSET); return (TRUE); |