diff options
Diffstat (limited to 'lib/libkse')
| -rw-r--r-- | lib/libkse/thread/thr_kern.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/libkse/thread/thr_kern.c b/lib/libkse/thread/thr_kern.c index d28636c..6563ca7 100644 --- a/lib/libkse/thread/thr_kern.c +++ b/lib/libkse/thread/thr_kern.c @@ -361,6 +361,19 @@ _kse_single_thread(struct pthread *curthread) curthread->kse->k_kcb->kcb_kmbx.km_curthread = NULL; curthread->attr.flags |= PTHREAD_SCOPE_SYSTEM; + /* + * After a fork, it is possible that an upcall occurs in + * the parent KSE that fork()'d before the child process + * is fully created and before its vm space is copied. + * During the upcall, the tcb is set to null or to another + * thread, and this is what gets copied in the child process + * when the vm space is cloned sometime after the upcall + * occurs. Note that we shouldn't have to set the kcb, but + * we do it for completeness. + */ + _kcb_set(curthread->kse->k_kcb); + _tcb_set(curthread->kse->k_kcb, curthread->tcb); + /* After a fork(), there child should have no pending signals. */ sigemptyset(&curthread->sigpend); |
