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MFC r207848:

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The thread_unsuspend() requires both process mutex and process spinlock
locked. Postpone the process unlock till the thread_unsuspend() is called.
This commit is contained in:
Konstantin Belousov 2010-05-17 08:15:04 +00:00
parent c32fbf547b
commit 4fa8113f97
1 changed files with 4 additions and 4 deletions
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8
sys/fs/procfs/procfs_ctl.c
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@ -236,7 +236,6 @@ out:
PROC_LOCK(p);
p->p_oppid = 0;
p->p_flag &= ~P_WAITED; /* XXX ? */
PROC_UNLOCK(p);
sx_xunlock(&proctree_lock);
wakeup(td->td_proc); /* XXX for CTL_WAIT below ? */
@ -249,9 +248,10 @@ out:
*/
case PROCFS_CTL_STEP:
error = proc_sstep(FIRST_THREAD_IN_PROC(p));
PROC_UNLOCK(p);
if (error)
if (error) {
PROC_UNLOCK(p);
return (error);
}
break;
/*
@ -260,7 +260,6 @@ out:
*/
case PROCFS_CTL_RUN:
p->p_flag &= ~P_STOPPED_SIG; /* this uses SIGSTOP */
PROC_UNLOCK(p);
break;
/*
@ -292,6 +291,7 @@ out:
PROC_SLOCK(p);
thread_unsuspend(p); /* If it can run, let it do so. */
PROC_SUNLOCK(p);
PROC_UNLOCK(p);
return (0);
}