On Thu, 2009-01-08 at 13:49 +0000, Hugh Dickins wrote: > Thank you for the ath5k wireless driver, > which I've just started using on an Aspire One. > > When running swapping load tests, wireless alive but not in active use, > I've now twice hit the BUG_ON(bf->skb == NULL) in ath5k_tasklet_rx(). > > First time was with 2.6.28 plus kdb patch, > kernel BUG at drivers/net/wireless/ath5k/base.c:1675! > and poking around the messages I could see before that an > ath5k phy0: can't alloc skbuff of size 2673, after a > swapper: page allocation failure, order:0 mode:0x4020 > on a call from dev_alloc_skb(), with memory summary. > > Second time was with yesterday's 2.6.28-git, no kdb, > kernel BUG at drivers/net/wireless/ath5k/base.c:1683! > running ath5k_tasklet_rx() from under do_softirq(), > Kernel panic - not syncing: Fatal exception in interrupt > so I couldn't see more; but at the top of the screen, the > last three lines of a page allocation failure memory summary. > > So, that BUG_ON(bf->skb == NULL) appears to be unsafe under > memory pressure; but the fix wasn't obvious to me, so over > to you! > > I'd be glad to try patches, of course, but it's not happening > often enough for me to report back success quickly - unless I > stumble on a quicker way to reproduce it, it'll need a week or > two to grow confident of a fix. > > Thanks, > Hugh I use aspire one, and I don't see that, did this happen several times? Could you try compat-wireless: http://wireless.kernel.org/en/users/Download It has many fixes that made my wireless on that notebook more or less usable. Best regards, Maxim Levitsky -- 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
