lkml.org 
[lkml]   [2008]   [Oct]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Bug in workqueues [was: Usb devices randomly aren't detected with 2.6.28-rc1-git1]
Date
On Sunday, 26 of October 2008, Alan Stern wrote:
> This is no longer a USB issue, so I'm asking for help from the general
> kernel community. Background can be found in Bugzilla #11853.
>
> On Sun, 26 Oct 2008, Mikko C. wrote:
>
> > Mikko C. ha scritto:
> > > Alan Stern ha scritto:
> > >>
> > >> I don't see anything in there that looks particularly suspicious.
> > >> The nature of your errors suggests that the default workqueue has
> > >> crashed or hung, but it shows up okay in the dump. Are you sure this
> > >> dump was made when the devices failed to appear?
> > >>
> > >>
> > >
> > > Yes, I'm 100% sure.
> > >
> > >> What happens when you try to rmmod the ALSA modules? Does rmmod
> > >> crash with an error or does it hang? If it hangs, can you get
> > >> another task dump showing the hanging process?
> > >>
> > >
> > > Whenever I try rmmoding something, it hangs (no crash) and I'm not
> > > able to do anything, beside moving the mouse.
> > > I posted here: http://marc.info/?l=linux-kernel&m=122502213503239&w=4
> > > but that's probably not enough, so I will try getting a full dump.
> > >
> > Here it is: http://bugzilla.kernel.org/attachment.cgi?id=18452&action=view
>
> The task dump shows rmmod waiting for flush_workqueue(). But the
> events/0 task doesn't appear to be hung, and the task dump taken before
> running rmmod shows events/0 doing something different.
>
> So apparently flush_workqueue() isn't working.

Let's make that more visible (adding CCs). :-)

Thanks,
Rafael


\
 
 \ /
  Last update: 2008-10-26 18:53    [W:0.070 / U:7.348 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site