diff options
Diffstat (limited to 'sys/kern/kern_fork.c')
| -rw-r--r-- | sys/kern/kern_fork.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index 3cd3017..8fe1006 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -477,6 +477,9 @@ again: PROC_LOCK(p1); p2->p_ucred = crhold(p1->p_ucred); td2->td_ucred = crhold(p2->p_ucred); /* XXXKSE */ +#ifdef DIAGNOSTIC /* see the comment in ast() */ + td2->td_ucred_cache = NULL; +#endif if (p2->p_args) p2->p_args->ar_ref++; @@ -802,12 +805,12 @@ fork_exit(callout, arg, frame) kthread_exit(0); } PROC_UNLOCK(p); -#ifdef INVARIANTS - mtx_lock(&Giant); - crfree(td->td_ucred); - mtx_unlock(&Giant); - td->td_ucred = NULL; -#endif +#ifdef DIAGNOSTIC /* see the comment in ast() */ + if (td->td_ucred_cache) + panic("fork_exit:thread already has cached ucred"); + td->td_ucred_cache = td->td_ucred; + td->td_ucred = NULL; +#endif /* DIAGNOSTIC */ mtx_assert(&Giant, MA_NOTOWNED); } |
