On Sun, 2009-07-05 at 12:59 +0400, Alexander Barinov wrote: > On Sat, 04 Jul 2009 12:41:42 +0200 > Johannes Berg <johannes@xxxxxxxxxxxxxxxx> wrote: > > On Sat, 2009-07-04 at 13:03 +0400, Alexander Barinov wrote: > > > The initial symptom of the bug was system lockup when executing > > > 'ifdown eth0' with 'BUG: scheduling while atomic'. Trying to > > > understand the cause of the bug and find a workaround I was able to > > > find an easier way to reproduce it. By executing > > > 'cat /proc/net/wireless' I get the same bug: > > This should have been fixed by > > 87057825824973f29cf2f37cff1e549170b2d7e6. For some reason everybody > > seems to have assumed that get_wireless_stats can sleep, which before > > that commit it could _not_. > > The patch you have mentioned was not directly applicable to 2.6.30 > kernel so I pulled wireless-testing git tree and compiled it. This > deteriorated the situation further - now after executing > 'cat /proc/net/wireless' I get kernel lockup without any further > messages. Can you get anything at all out of the kernel on that? 2.6.29.5 with quite recent wireless-testing libertas driver works fine with sd8686 on my machine (hp 2530p laptop with a Ricoh controller). Can you post your backport of that patch too? Dan -- 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
