diff options
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 05f03919ff..7f6700c54e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -7635,30 +7635,33 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return -TARGET_ERESTARTSYS; } - cpu_list_lock(); + pthread_mutex_lock(&clone_lock); if (CPU_NEXT(first_cpu)) { - TaskState *ts; + TaskState *ts = cpu->opaque; - /* Remove the CPU from the list. */ - QTAILQ_REMOVE_RCU(&cpus, cpu, node); + object_property_set_bool(OBJECT(cpu), false, "realized", NULL); + object_unref(OBJECT(cpu)); + /* + * At this point the CPU should be unrealized and removed + * from cpu lists. We can clean-up the rest of the thread + * data without the lock held. + */ - cpu_list_unlock(); + pthread_mutex_unlock(&clone_lock); - ts = cpu->opaque; if (ts->child_tidptr) { put_user_u32(0, ts->child_tidptr); do_sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX, NULL, NULL, 0); } thread_cpu = NULL; - object_unref(OBJECT(cpu)); g_free(ts); rcu_unregister_thread(); pthread_exit(NULL); } - cpu_list_unlock(); + pthread_mutex_unlock(&clone_lock); preexit_cleanup(cpu_env, arg1); _exit(arg1); return 0; /* avoid warning */ |