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Only unlock process if a thread is found.

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This commit is contained in:
David Xu 2010-11-15 07:33:54 +00:00
parent 7dc246bc0f
commit 32c63db519
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=215336
1 changed files with 4 additions and 4 deletions
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8
sys/kern/kern_umtx.c
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@ -1592,11 +1592,11 @@ umtxq_sleep_pi(struct umtx_q *uq, struct umtx_pi *pi,
/* 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) {