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Sanitize the pid and lid arguments passed to do_sched_getparam() 

and sys__sched_getaffinity() now that -1 as the pid argument to
lwp_find2() means "wildcard proc".
This commit is contained in:
thorpej 2020-04-29 01:53:48 +00:00
parent 59150873b5
commit 6925a27fb3
1 changed files with 8 additions and 2 deletions
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10
sys/kern/sys_sched.c
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@ -1,4 +1,4 @@
/* $NetBSD: sys_sched.c,v 1.47 2020/01/27 22:05:10 ad Exp $ */
/* $NetBSD: sys_sched.c,v 1.48 2020/04/29 01:53:48 thorpej Exp $ */
/*
* Copyright (c) 2008, 2011 Mindaugas Rasiukevicius <rmind at NetBSD org>
@ -41,7 +41,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sys_sched.c,v 1.47 2020/01/27 22:05:10 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: sys_sched.c,v 1.48 2020/04/29 01:53:48 thorpej Exp $");
#include <sys/param.h>
@ -231,6 +231,9 @@ do_sched_getparam(pid_t pid, lwpid_t lid, int *policy,
struct lwp *t;
int error, lpolicy;
if (pid < 0 || lid < 0)
return EINVAL;
t = lwp_find2(pid, lid); /* acquire p_lock */
if (t == NULL)
return ESRCH;
@ -498,6 +501,9 @@ sys__sched_getaffinity(struct lwp *l,
kcpuset_t *kcset;
int error;
if (SCARG(uap, pid) < 0 || SCARG(uap, lid) < 0)
return EINVAL;
error = genkcpuset(&kcset, SCARG(uap, cpuset), SCARG(uap, size));
if (error)
return error;