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Re: linux-next 20141216 BUG: sleeping function called from invalid context at mm/slab.c:2849



On 14/12/18, Valdis Kletnieks vt edu wrote:
> On Thu, 18 Dec 2014 11:50:20 -0500, Eric Paris said:
> > On Thu, 2014-12-18 at 11:45 -0500, Valdis Kletnieks vt edu wrote:
> > > On Tue, 16 Dec 2014 20:09:54 -0500, Valdis Kletnieks said:
> > > > Spotted these two while booting single-user on 20141216.  20141208
> > > > doesn't throw these, so it's something in the last week or so..
> > >
> > > Gaah!  Turns out that 20141208 *is* susceptible - it had been booting
> > > just fine for several days, but it went around the bend, apparently due
> > > to a userspace or initrd change.
> >
> > $5 says you updated systemd?
> 
> Actually, yeah.  yum.log says:
> 
> Dec 12 14:08:09 Updated: systemd-218-1.fc22.x86_64
> 
> and things started going downhill that evening.  Damned if I know what 218
> was doing to cause the issues.  (Other RPM update that looked vaguely
> related was for selinux-policy, but again, damned if I know what a policy
> file could contain that would change the behavior...)
> 
> Is it worth backing it to -217, or do we have a handle on the issue and
> systemd is just the messenger?

I've got a potential fix since the problem looks pretty obvious now.

This is stable branch material...

- RGB

--
Richard Guy Briggs <rbriggs redhat com>
Senior Software Engineer, Kernel Security, AMER ENG Base Operating Systems, Red Hat
Remote, Ottawa, Canada
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