https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277499
Warner Losh <i...@freebsd.org> changed:
What |Removed |Added
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CC| |i...@freebsd.org
--- Comment #1 from Warner Losh <i...@freebsd.org> ---
This looks like an old bug that I killed 3 or 4 years ago.
The root cause is that we're leaking a reference, so the periph is torn down
with outstanding devices.
if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) {
struct cam_ed *dev = ccb_h->path->device;
if (sim)
devq = sim->devq;
KASSERT(devq, ("Periph disappeared with CCB %p %s request
pending.",
ccb_h, xpt_action_name(ccb_h->func_code)));
mtx_lock(&devq->send_mtx);
devq is NULL here, according to the traceback...
The hard part is figuring out how this came to be.
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