From cce7cfdaf572e448477a6ffcc3f317cd9d7018b4 Mon Sep 17 00:00:00 2001 From: rwatson Date: Sun, 9 Dec 2007 17:22:27 +0000 Subject: Check for P_WEXIT before PHOLD() on a process in kstack and vm query sysctls, as PHOLD() asserts !P_WEXIT. Reported by: Michael Plass --- sys/kern/kern_proc.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'sys/kern/kern_proc.c') diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c index 818efa7..7fca5dd 100644 --- a/sys/kern/kern_proc.c +++ b/sys/kern/kern_proc.c @@ -1309,6 +1309,10 @@ sysctl_kern_proc_vmmap(SYSCTL_HANDLER_ARGS) name = (int *)arg1; if ((p = pfind((pid_t)name[0])) == NULL) return (ESRCH); + if (p->p_flag & P_WEXIT) { + PROC_UNLOCK(p); + return (ESRCH); + } if ((error = p_candebug(curthread, p))) { PROC_UNLOCK(p); return (error); @@ -1457,6 +1461,10 @@ sysctl_kern_proc_kstack(SYSCTL_HANDLER_ARGS) name = (int *)arg1; if ((p = pfind((pid_t)name[0])) == NULL) return (ESRCH); + if (p->p_flag & P_WEXIT) { + PROC_UNLOCK(p); + return (ESRCH); + } if ((error = p_candebug(curthread, p))) { PROC_UNLOCK(p); return (error); -- cgit v1.1