Date: Sat, 7 Jul 2001 21:34:31 -0500 From: Alfred Perlstein <bright@sneakerz.org> To: smp@freebsd.org Cc: jhb@freebsd.org, jake@freebsd.org Subject: trapsignal+ktrace looks broken. Message-ID: <20010707213431.J88962@sneakerz.org>
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In kern/kern_sig.c:trapsignal(), there's this:
{
register struct sigacts *ps = p->p_sigacts;
PROC_LOCK(p);
if ((p->p_flag & P_TRACED) == 0 && SIGISMEMBER(p->p_sigcatch, sig) &&
!SIGISMEMBER(p->p_sigmask, sig)) {
p->p_stats->p_ru.ru_nsignals++;
#ifdef KTRACE
if (KTRPOINT(p, KTR_PSIG))
ktrpsig(p->p_tracep, sig, ps->ps_sigact[_SIG_IDX(sig)],
&p->p_sigmask, code);
#endif
PROC_UNLOCK(p); /* XXX ??? */
(*p->p_sysent->sv_sendsig)(ps->ps_sigact[_SIG_IDX(sig)], sig,
Anyhow, ktrpsig() does some IO, which I'm quite sure may result in a
sleep, I'm also quite certain that would result in a panic with witness.
--
-Alfred Perlstein [alfred@freebsd.org]
Ok, who wrote this damn function called '??'?
And why do my programs keep crashing in it?
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