Date: Mon, 15 Nov 2010 07:33:54 +0000 (UTC) From: David Xu <davidxu@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r215336 - head/sys/kern Message-ID: <201011150733.oAF7XsQ1008196@svn.freebsd.org>
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Author: davidxu Date: Mon Nov 15 07:33:54 2010 New Revision: 215336 URL: http://svn.freebsd.org/changeset/base/215336 Log: Only unlock process if a thread is found. Modified: head/sys/kern/kern_umtx.c Modified: head/sys/kern/kern_umtx.c ============================================================================== --- head/sys/kern/kern_umtx.c Mon Nov 15 06:04:25 2010 (r215335) +++ head/sys/kern/kern_umtx.c Mon Nov 15 07:33:54 2010 (r215336) @@ -1592,11 +1592,11 @@ umtxq_sleep_pi(struct umtx_q *uq, struct /* XXX Only look up thread in current process. */ td1 = tdfind(owner, curproc->p_pid); mtx_lock_spin(&umtx_lock); - if (td1 != NULL && pi->pi_owner == NULL) { - uq1 = td1->td_umtxq; - umtx_pi_setowner(pi, td1); + if (td1 != NULL) { + if (pi->pi_owner == NULL) + umtx_pi_setowner(pi, td1); + PROC_UNLOCK(td1->td_proc); } - PROC_UNLOCK(td1->td_proc); } TAILQ_FOREACH(uq1, &pi->pi_blocked, uq_lockq) {
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