From 271c21194467838d6ca63d83faeebc966e204c03 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Mon, 16 Sep 2013 10:56:01 -0400 Subject: [PATCH] omit CLONE_PARENT flag to clone in pthread_create CLONE_PARENT is not necessary (CLONE_THREAD provides all the useful parts of it) and Linux treats CLONE_PARENT as an error in certain situations, without noticing that it would be a no-op due to CLONE_THREAD. this error case prevents, for example, use of a multi-threaded init process and certain usages with containers. --- src/thread/pthread_create.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c index fc666fc5..ee6c31c4 100644 --- a/src/thread/pthread_create.c +++ b/src/thread/pthread_create.c @@ -130,7 +130,7 @@ int pthread_create(pthread_t *restrict res, const pthread_attr_t *restrict attrp struct pthread *self = pthread_self(), *new; unsigned char *map = 0, *stack = 0, *tsd = 0, *stack_limit; unsigned flags = CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND - | CLONE_PARENT | CLONE_THREAD | CLONE_SYSVSEM | CLONE_SETTLS + | CLONE_THREAD | CLONE_SYSVSEM | CLONE_SETTLS | CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID | CLONE_DETACHED; int do_sched = 0; pthread_attr_t attr = {0}; -- 2.25.1