That's interesting. What did you do to get there? There's some code path that's unholding the periph without first holding it. I've been trying to find a scenario.
Warner On Sat, Feb 17, 2018 at 5:01 AM, Hans Petter Selasky <h...@selasky.org> wrote: > I've started to hit this panic with USB mass storage, before even the > device has become in-use: > > panic: Unholding 4 with cnt = 0 > > Backtrace: > > vpanic() > panic() > daprobedone() > dadone() > xpt_done_process() > xpt_done_td() > fork_exit() > fork_trampoline() > > db> > > > static inline void >> da_periph_unhold(struct cam_periph *periph, da_ref_token token) >> { >> int cnt; >> struct da_softc *softc = periph->softc; >> >> token_sanity(token); >> DA_PERIPH_PRINT(periph, "Unholding device %s (%d)\n", >> da_ref_text[token], token); >> cnt = atomic_fetchadd_int(&softc->ref_flags[token], -1); >> if (cnt != 1) >> panic("Unholding %d with cnt = %d", token, cnt); >> cam_periph_unhold(periph); >> } >> > _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"