#127: madwifi-ng: 2.6.15 kernel panic: fatal exception in irq handler
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Reporter: schorpp | Owner: mrenzmann
Type: defect | Status: new
Priority: critical | Milestone: version 0.9.0 - move to new
codebase
Component: madwifi: driver | Version: trunk
Resolution: | Keywords: panic
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Comment (by schorpp):
and that explains the spuriosity of the crash:
/*
* Determine if a tx interrupt should be generated for
* this descriptor. We take a tx interrupt to reap
* descriptors when the h/w hits an EOL condition or
* when the descriptor is specifically marked to generate
* an interrupt. We periodically mark descriptors in this
* way to ensure timely replenishing of the supply needed
* for sending frames. Defering interrupts reduces system
* load and potentially allows more concurrent work to be
* done but if done to aggressively can cause senders to
* backup. XXX and maybe kernel crashes, i will try to disarm this
XXX
*
* NB: use >= to deal with sc_txintrperiod changing
* dynamically through sysctl.
*/
if (!M_FLAG_GET(skb, M_UAPSD) &&
++txq->axq_intrcnt >= sc->sc_txintrperiod) {
flags |= HAL_TXDESC_INTREQ;
txq->axq_intrcnt = 0;
}
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Ticket URL: <http://madwifi.org/ticket/127>
MadWifi <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
