diff options
Diffstat (limited to 'lib/libthr/thread/thr_create.c')
| -rw-r--r-- | lib/libthr/thread/thr_create.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_create.c b/lib/libthr/thread/thr_create.c index f0af20b..a41b33f 100644 --- a/lib/libthr/thread/thr_create.c +++ b/lib/libthr/thread/thr_create.c @@ -32,6 +32,7 @@ #include <sys/rtprio.h> #include <sys/signalvar.h> #include <errno.h> +#include <link.h> #include <stdlib.h> #include <string.h> #include <stddef.h> @@ -58,6 +59,7 @@ _pthread_create(pthread_t * thread, const pthread_attr_t * attr, sigset_t set, oset; cpuset_t *cpusetp = NULL; int cpusetsize = 0; + int old_stack_prot; _thr_check_init(); @@ -96,6 +98,7 @@ _pthread_create(pthread_t * thread, const pthread_attr_t * attr, new_thread->tid = TID_TERMINATED; + old_stack_prot = _rtld_get_stack_prot(); if (create_stack(&new_thread->attr) != 0) { /* Insufficient memory to create a stack: */ _thr_free(curthread, new_thread); @@ -130,6 +133,14 @@ _pthread_create(pthread_t * thread, const pthread_attr_t * attr, /* Add the new thread. */ new_thread->refcount = 1; _thr_link(curthread, new_thread); + + /* + * Handle the race between __pthread_map_stacks_exec and + * thread linkage. + */ + if (old_stack_prot != _rtld_get_stack_prot()) + _thr_stack_fix_protection(new_thread); + /* Return thread pointer eariler so that new thread can use it. */ (*thread) = new_thread; if (SHOULD_REPORT_EVENT(curthread, TD_CREATE) || cpusetp != NULL) { |
