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| author | rwatson <rwatson@FreeBSD.org> | 2007-12-09 17:22:27 +0000 |
|---|---|---|
| committer | rwatson <rwatson@FreeBSD.org> | 2007-12-09 17:22:27 +0000 |
| commit | cce7cfdaf572e448477a6ffcc3f317cd9d7018b4 (patch) | |
| tree | ddaf99357f8f85342da9c6b1b4f60dd5bbf7d7b5 /sys/kern/kern_proc.c | |
| parent | 3f2bc4767df0b4622ebdb86333bbed90e3c6ce5f (diff) | |
| download | FreeBSD-src-cce7cfdaf572e448477a6ffcc3f317cd9d7018b4.zip FreeBSD-src-cce7cfdaf572e448477a6ffcc3f317cd9d7018b4.tar.gz | |
Check for P_WEXIT before PHOLD() on a process in kstack and vm query
sysctls, as PHOLD() asserts !P_WEXIT.
Reported by: Michael Plass <mfp49_freebsd at plass-family dot net>
Diffstat (limited to 'sys/kern/kern_proc.c')
| -rw-r--r-- | sys/kern/kern_proc.c | 8 |
1 files changed, 8 insertions, 0 deletions
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); |
