diff options
| author | David Gwynne <dlg@cvs.openbsd.org> | 2014-07-02 05:50:00 +0000 |
|---|---|---|
| committer | David Gwynne <dlg@cvs.openbsd.org> | 2014-07-02 05:50:00 +0000 |
| commit | 50322e4353efd442904b1d206427cfbcadcf6c62 (patch) | |
| tree | c4e0bce064e89923436ad298bf07f409ab1de9bd /sys/kern | |
| parent | 03bb4d8e2f6a7bb59fc57a5cbac442b6ea39889c (diff) | |
take the pools mutex when copying stats out of it in the sysctl
path so we are guaranteed a consistent snapshot.
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/subr_pool.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/kern/subr_pool.c b/sys/kern/subr_pool.c index 19e552bc422..a5b2ee4d093 100644 --- a/sys/kern/subr_pool.c +++ b/sys/kern/subr_pool.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_pool.c,v 1.130 2014/07/02 05:42:40 dlg Exp $ */ +/* $OpenBSD: subr_pool.c,v 1.131 2014/07/02 05:49:59 dlg Exp $ */ /* $NetBSD: subr_pool.c,v 1.61 2001/09/26 07:14:56 chs Exp $ */ /*- @@ -1484,6 +1484,8 @@ sysctl_dopool(int *name, u_int namelen, char *where, size_t *sizep) break; case KERN_POOL_POOL: memset(&pi, 0, sizeof(pi)); + + mtx_enter(&pp->pr_mtx); pi.pr_size = pp->pr_size; pi.pr_pgsize = pp->pr_alloc->pa_pagesz; pi.pr_itemsperpage = pp->pr_itemsperpage; @@ -1499,6 +1501,8 @@ sysctl_dopool(int *name, u_int namelen, char *where, size_t *sizep) pi.pr_npagefree = pp->pr_npagefree; pi.pr_hiwat = pp->pr_hiwat; pi.pr_nidle = pp->pr_nidle; + mtx_leave(&pp->pr_mtx); + rv = copyout(&pi, where, buflen); break; } |