On Thu, Oct 02, 2008 at 09:25:54PM -0500, Robin Holt wrote: > OK. I think I have convinced myself this is an issue with > sta_info_debugfs_add_work(). I am going to turn off > CONFIG_MAC80211_DEBUGFS and see if that makes things better. Appear to be on the right track here. With CONFIG_MAC80211_DEBUGFS=y, I could only suspend/resume approx 4 times without iwl3945 hanging. I had worked around that by modprobe -r iwl3945 and waiting a while before suspending. Now with CONFIG_MAC80211_DEBUGFS=n, I have done 6 suspends with the machine suspended for 5 minutes before resuming and it has not hung. That has not occurred before. I will continue to test this for the next few days. Thanks, Robin > > Thanks, > Robin > > On Thu, Oct 02, 2008 at 08:47:50PM -0500, Robin Holt wrote: > > On Thu, Oct 02, 2008 at 06:34:22PM -0500, Robin Holt wrote: > > > I do have KDB installed as well and one other thing I noticed is we are > > > adding work to a workqueue at the time of the hang. Not sure if this > > > is accurate and I forgot that I only have a VGA console so there is > > > no record of the KDB output. > > > > OK. In KDB. Here goes... > > > > events/0 process is on cpu0 with the following stack. > > > > _spin_unlock_irqrestore+0x10 > > [mac80211]sta_info_debugfs_add_work+0x82 > > run_workqueue+0xd4 > > worker_thread+0x88 > > kthread+0x42 > > > > > > I few times later, I got: > > _cond_resched+0x10 > > [mac80211]sta_info_destroy+0x10 > > [mac80211]sta_info_debugfs_add_work+0xee > > run_workqueue+0xd4 > > worker_thread+0x88 > > kthread+0x42 > > > > I am transposing these from screen to this email so I reserve the right > > to be slightly off, but these appear to be the call traces. > > > > It looks to me like this add_work loop is truly an infinite loop and > > preventing interrupts from being processed on cpu0. > > > > Thanks, > > Robin -- 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
