On Wed, Oct 6, 2010 at 11:49 AM, Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote: > On 10/06/2010 11:45 AM, Luis R. Rodriguez wrote: >> >> On Wed, Oct 6, 2010 at 9:29 AM, Ben Greear<greearb@xxxxxxxxxxxxxxx> >> Âwrote: >>> >>> I would like to have a different hardware/driver combination to try >>> to tie-break whether bugs are in mac80211 or in the ath9k >>> driver/hardware. >>> >>> I don't mind doing a bit of driver hacking so long as the basic support >>> is there (I think it's mostly the ability to set a BSSID mask and >>> rxfilter >>> accordingly). >> >> Your best bet is to test against mac80211_hwsim, that would rule out >> any hardware. I think Jouni and Johannes have also a way to get the >> devices to talk to each other. Perhaps some documentation of that on >> the kernel Documentation/networking/mac80211_hwsim/ > > Ok. ÂI'm trying to hack slub to give me a better stack trace of where > the skb was deleted. ÂIf that doesn't turn up anything obvious, then > I'll go read up on hwsim. > > Are you aware of any DMA issues that might cause ath9k to write into > places it should not? ÂPreviously, I've seen a lot of errors in > the logs about ath9k not being able to stop DMA in time, but I haven't > seen those while reproducing the memory corruption. Yeah, well there have been a few bug reports but when we asked for instructions how to reproduce we get nowhere. You are the first to actually find some reproducible instructions. Forgive me but I haven't had time yet to work on this though. Seems you have a good grasp of things though and can easily reproduce so you likely are in a better position right now to debug at the moment. Luis -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
