From c9bcbf38004eac1c27ff642224e9f54d351a9849 Mon Sep 17 00:00:00 2001 From: Alexander Motin Date: Fri, 19 May 2017 05:12:58 +0000 Subject: [PATCH] Fix time handling in cv_timedwait_hires(). pthread_cond_timedwait() receives absolute time, not relative. Passing wrong time there caused two threads of zdb to spin in a tight loop. MFC after: 1 week --- cddl/contrib/opensolaris/lib/libzpool/common/kernel.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c b/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c index 4cff63e6a1ed..701f0b43bf84 100644 --- a/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c +++ b/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c @@ -368,7 +368,7 @@ cv_timedwait_hires(kcondvar_t *cv, kmutex_t *mp, hrtime_t tim, hrtime_t res, int flag) { int error; - timestruc_t ts; + timespec_t ts; hrtime_t delta; ASSERT(flag == 0 || flag == CALLOUT_FLAG_ABSOLUTE); @@ -381,8 +381,13 @@ cv_timedwait_hires(kcondvar_t *cv, kmutex_t *mp, hrtime_t tim, hrtime_t res, if (delta <= 0) return (-1); - ts.tv_sec = delta / NANOSEC; - ts.tv_nsec = delta % NANOSEC; + clock_gettime(CLOCK_REALTIME, &ts); + ts.tv_sec += delta / NANOSEC; + ts.tv_nsec += delta % NANOSEC; + if (ts.tv_nsec >= NANOSEC) { + ts.tv_sec++; + ts.tv_nsec -= NANOSEC; + } ASSERT(mutex_owner(mp) == curthread); mp->m_owner = NULL;