[Qemu-devel] [PULL 78/79] cpus: fix TCG kick timer leak

[Paolo Bonzini]

From: Alex Bennée <alex.ben...@linaro.org>

This is an alternative fix to Marc-André's original patch.

Reported-by: Marc-André Lureau <marcandre.lur...@redhat.com>
Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
Message-Id: <20180927171724.30128-1-alex.ben...@linaro.org>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
 cpus.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/cpus.c b/cpus.c
index 68f08f5..361678e 100644
--- a/cpus.c
+++ b/cpus.c
@@ -983,6 +983,8 @@ static void start_tcg_kick_timer(void)
     if (!tcg_kick_vcpu_timer && CPU_NEXT(first_cpu)) {
         tcg_kick_vcpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
                                            kick_tcg_thread, NULL);
+    }
+    if (tcg_kick_vcpu_timer && !timer_pending(tcg_kick_vcpu_timer)) {
         timer_mod(tcg_kick_vcpu_timer, qemu_tcg_next_kick());
     }
 }
@@ -990,9 +992,8 @@ static void start_tcg_kick_timer(void)
 static void stop_tcg_kick_timer(void)
 {
     assert(!mttcg_enabled);
-    if (tcg_kick_vcpu_timer) {
+    if (tcg_kick_vcpu_timer && timer_pending(tcg_kick_vcpu_timer)) {
         timer_del(tcg_kick_vcpu_timer);
-        tcg_kick_vcpu_timer = NULL;
     }
 }
 
-- 
1.8.3.1