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selrecord() before calling userspace to avoid (very theoretical) race

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where selinfo contains uninitialized garbage
This commit is contained in:
pooka 2007-05-18 14:25:30 +00:00
parent 1044d56390
commit 93dd832918
1 changed files with 3 additions and 3 deletions
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6
sys/fs/puffs/puffs_vnops.c
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@ -1,4 +1,4 @@
/* $NetBSD: puffs_vnops.c,v 1.69 2007/05/18 13:53:09 pooka Exp $ */
/* $NetBSD: puffs_vnops.c,v 1.70 2007/05/18 14:25:30 pooka Exp $ */
/*
* Copyright (c) 2005, 2006, 2007 Antti Kantee. All Rights Reserved.
@ -33,7 +33,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.69 2007/05/18 13:53:09 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.70 2007/05/18 14:25:30 pooka Exp $");
#include <sys/param.h>
#include <sys/fstrans.h>
@ -1046,11 +1046,11 @@ puffs_poll(void *v)
poll_argp->pvnr_events = ap->a_events;
poll_argp->pvnr_pid = puffs_lwp2pid(ap->a_l);
selrecord(ap->a_l, &pn->pn_sel);
puffs_vntouser_call(pmp, PUFFS_VN_POLL,
poll_argp, sizeof(struct puffs_vnreq_poll), 0,
puffs_parkdone_poll, pn,
vp, NULL);
selrecord(ap->a_l, &pn->pn_sel);
return 0;
}