| Message ID | 1441308266-20801-1-git-send-email-anibal.limon@linux.intel.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/cpus.c b/cpus.c index 7e4786e..05e5400 100644 --- a/cpus.c +++ b/cpus.c @@ -1171,7 +1171,7 @@ void qemu_mutex_lock_iothread(void) * TCG code execution. */ if (!tcg_enabled() || qemu_in_vcpu_thread() || - !first_cpu || !first_cpu->thread) { + !first_cpu || !first_cpu->created) { qemu_mutex_lock(&qemu_global_mutex); atomic_dec(&iothread_requesting_mutex); } else {
When QEMU starts the RCU thread executes qemu_mutex_lock_thread causing error "qemu:qemu_cpu_kick_thread: No such process" and exits. This isn't occur frequently but in glibc the thread id can exist and this not guarantee that the thread is on active/running state. If is inserted a sleep(1) after newthread assignment [1] the issue appears. So not make assumption that thread exist if first_cpu->thread is set then change the validation of cpu to created that is set into cpu threads (kvm, tcg, dummy). [1] https://sourceware.org/git/?p=glibc.git;a=blob;f=nptl/pthread_create.c;h=d10f4ea8004e1d8f3a268b95cc0f8d93b8d89867;hb=HEAD#l621 Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com> --- cpus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)