The panics in exit1() that have been reported on -stable appear to be caused by these commits: REV:1.92.2.4 kern_exit.c 2001/07/25 17:21:46 dillon REV:1.72.2.7 kern_sig.c 2001/07/25 17:21:46 dillon MFC kern_exit.c 1.131, kern_sig.c 1.125 - bring SIGCHLD SIG_IGN signal handling in line with other operating systems. These probably correspond to similar panics seen in -current, but I haven't checked the details. In the vmcore I just got, the panic occurred in the following fragment in exit1(), when dereferencing p_sigacts (which is p_procsig->ps_sigacts). I guess there is a race here if the parent is exiting or something? + if ((p->p_pptr->p_procsig->ps_flag & PS_NOCLDWAIT) + || p->p_pptr->p_sigacts->ps_sigact[_SIG_IDX(SIGCHLD)] == SIG_IGN) { Matt, I will just back out these changes from RELENG_4 shortly until the issue is resolved. The change was non-essential and quite contained, so it's probably better than waiting for a fix. Ian To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message