diff options
| author | Poul-Henning Kamp <phk@FreeBSD.org> | 1998-04-11 17:24:06 +0000 |
|---|---|---|
| committer | Poul-Henning Kamp <phk@FreeBSD.org> | 1998-04-11 17:24:06 +0000 |
| commit | a2481bbe8ec3db0361edb555fdc52d63fa7dad63 (patch) | |
| tree | 74ea31790a48603a8b9039c3ea3a3e7e268aa619 /sys/kern | |
| parent | 044b7805a9b8e758f056f959db527b916ec14679 (diff) | |
| download | src-a2481bbe8ec3db0361edb555fdc52d63fa7dad63.tar.gz src-a2481bbe8ec3db0361edb555fdc52d63fa7dad63.zip | |
When pmap_pinit0() allocates a page for proc0's page directory,
kernal page table may need to be extended. But while growing the
kernel page table (pmap_growkernel()), newly allocated kernel page
table pages are entered into every process' page directory. For
proc0, the page directory is not allocated yet, and results in a
page fault. Eventually, the machine panics with "lockmgr: not
holding exclusive lock".
PR: 5458
Reviewed by: phk
Submitted by: Luoqi Chen <luoqi@luoqi.watermarkgroup.com>
Notes
Notes:
svn path=/head/; revision=35136
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/init_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c index 572eff1de04e..022cfa3b31d8 100644 --- a/sys/kern/init_main.c +++ b/sys/kern/init_main.c @@ -39,7 +39,7 @@ * SUCH DAMAGE. * * @(#)init_main.c 8.9 (Berkeley) 1/21/94 - * $Id: init_main.c,v 1.87 1998/04/06 15:51:22 peter Exp $ + * $Id: init_main.c,v 1.88 1998/04/08 09:01:52 phk Exp $ */ #include "opt_devfs.h" @@ -380,9 +380,9 @@ proc0_init(dummy) limit0.p_refcnt = 1; /* Allocate a prototype map so we have something to fork. */ + pmap_pinit0(&vmspace0.vm_pmap); p->p_vmspace = &vmspace0; vmspace0.vm_refcnt = 1; - pmap_pinit0(&vmspace0.vm_pmap); vm_map_init(&vmspace0.vm_map, round_page(VM_MIN_ADDRESS), trunc_page(VM_MAXUSER_ADDRESS)); vmspace0.vm_map.pmap = &vmspace0.vm_pmap; |