svn commit: r203875 - head/sys/kern
Konstantin Belousov
kib at FreeBSD.org
Sun Feb 14 13:59:01 UTC 2010
Author: kib
Date: Sun Feb 14 13:59:01 2010
New Revision: 203875
URL: http://svn.freebsd.org/changeset/base/203875
Log:
Do not leak process lock when current thread is not allowed to see target.
Bumped into by: ed
MFC after: 3 days
Modified:
head/sys/kern/kern_event.c
Modified: head/sys/kern/kern_event.c
==============================================================================
--- head/sys/kern/kern_event.c Sun Feb 14 12:31:28 2010 (r203874)
+++ head/sys/kern/kern_event.c Sun Feb 14 13:59:01 2010 (r203875)
@@ -349,8 +349,10 @@ filt_procattach(struct knote *kn)
if (p == NULL)
return (ESRCH);
- if ((error = p_cansee(curthread, p)))
+ if ((error = p_cansee(curthread, p))) {
+ PROC_UNLOCK(p);
return (error);
+ }
kn->kn_ptr.p_proc = p;
kn->kn_flags |= EV_CLEAR; /* automatically set */
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