fix missing synchronization of pthread TSD keys with MT-fork

[musl] / src / process / fork.c

diff --git a/src/process/fork.c b/src/process/fork.c
index 80e804b..56f1931 100644 (file)
--- a/src/process/fork.c
+++ b/src/process/fork.c
@@ -37,6 +37,7 @@ static void dummy(int x) { }
 weak_alias(dummy, __fork_handler);
 weak_alias(dummy, __malloc_atfork);
 weak_alias(dummy, __aio_atfork);
+weak_alias(dummy, __pthread_key_atfork);
 weak_alias(dummy, __ldso_atfork);
 
 static void dummy_0(void) { }
@@ -51,6 +52,7 @@ pid_t fork(void)
        int need_locks = libc.need_locks > 0;
        if (need_locks) {
                __ldso_atfork(-1);
+               __pthread_key_atfork(-1);
                __aio_atfork(-1);
                __inhibit_ptc();
                for (int i=0; i<sizeof atfork_locks/sizeof *atfork_locks; i++)
@@ -78,6 +80,7 @@ pid_t fork(void)
                                else **atfork_locks[i] = 0;
                __release_ptc();
                if (ret) __aio_atfork(0);
+               __pthread_key_atfork(!ret);
                __ldso_atfork(!ret);
        }
        __restore_sigs(&set);