diff options
| author | jhb <jhb@FreeBSD.org> | 2000-12-01 23:43:15 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2000-12-01 23:43:15 +0000 |
| commit | 6a64e36210e572b4242fa2a9b9db3599d7e8e30d (patch) | |
| tree | 83d9f554216ca224412a0ff349d4f730444eb542 /sys/kern/kern_sig.c | |
| parent | 537bde557a87f952713ab48b67eb60e8ab7cd9a7 (diff) | |
| download | FreeBSD-src-6a64e36210e572b4242fa2a9b9db3599d7e8e30d.zip FreeBSD-src-6a64e36210e572b4242fa2a9b9db3599d7e8e30d.tar.gz | |
Protect p_stat with sched_lock.
Diffstat (limited to 'sys/kern/kern_sig.c')
| -rw-r--r-- | sys/kern/kern_sig.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 434420b..a6d9f75 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -1108,8 +1108,11 @@ psignal(p, sig) * Defer further processing for signals which are held, * except that stopped processes must be continued by SIGCONT. */ - if (action == SIG_HOLD && (!(prop & SA_CONT) || p->p_stat != SSTOP)) + mtx_enter(&sched_lock, MTX_SPIN); + if (action == SIG_HOLD && (!(prop & SA_CONT) || p->p_stat != SSTOP)) { + mtx_exit(&sched_lock, MTX_SPIN); return; + } s = splhigh(); switch (p->p_stat) { @@ -1242,6 +1245,7 @@ runfast: run: setrunnable(p); out: + mtx_exit(&sched_lock, MTX_SPIN); splx(s); } @@ -1417,9 +1421,11 @@ stop(p) register struct proc *p; { + mtx_enter(&sched_lock, MTX_SPIN); p->p_stat = SSTOP; p->p_flag &= ~P_WAITED; wakeup((caddr_t)p->p_pptr); + mtx_exit(&sched_lock, MTX_SPIN); } /* |
