Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths

From	Oleg Nesterov <oleg@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths
Date	2016-10-03 18:50 +0200
Message-ID	<soeBc-7qE-51@gated-at.bofh.it> (permalink)
References	(3 earlier) <slHq2-6hN-39@gated-at.bofh.it> <slUwV-6dY-1@gated-at.bofh.it> <sm4mB-3UT-11@gated-at.bofh.it> <sn9Dz-4Pc-17@gated-at.bofh.it> <snWNX-3MD-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 10/03, Dave Chinner wrote:
>
> On Fri, Sep 30, 2016 at 07:14:34PM +0200, Oleg Nesterov wrote:
> > On 09/27, Oleg Nesterov wrote:
> > >
> > >
> > > It seems that generic/001 just hangs on my laptop. With or without this change.
> > > Or perhaps I didn't wait enough...
> >
> > /usr/bin/awk spins in user-mode forever, according to strace it doesn't do
> > any syscalls. I didn't even try to investigate.
>
> Are you using gawk, or some other version of awk? gawk doesn't have
> any problems

gawk, awk is symlink. And somehow this depends on userspace environment,
it doesn't hang on the full-blown Fedora 23.

> > Jan, I gave up.
> >
> > Whatever I did xfstests-dev/check reports a lot of failures, kernel bugs,
> > and finally either crashes the kernel or hangs.
>
> Did you run the auto group like I suggested? That's the set of tests
> that should complete successfully with minimal failures and without
> crashing the machine.

OK, I'll reserve a testing machine again.

Oleg.

Thread

[PATCH 0/2] (Was: BUG_ON in rcu_sync_func triggered) Oleg Nesterov <oleg@redhat.com> - 2016-09-26 18:10 +0200
  [PATCH 2/2] fs/super.c: don't fool lockdep in freeze_super() and  thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-09-26 18:10 +0200
    Re: [PATCH 2/2] fs/super.c: don't fool lockdep in freeze_super() and  thaw_super() paths Jan Kara <jack@suse.cz> - 2016-09-26 18:20 +0200
      [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super() and  thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-09-26 19:00 +0200
        Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Jan Kara <jack@suse.cz> - 2016-09-27 09:00 +0200
          Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Dave Chinner <david@fromorbit.com> - 2016-09-27 09:20 +0200
          Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-09-27 19:30 +0200
            Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-09-30 19:20 +0200
              Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Dave Chinner <david@fromorbit.com> - 2016-10-02 23:50 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in         freeze_super() and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-03 18:50 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-04 19:00 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Dave Chinner <david@fromorbit.com> - 2016-10-04 22:10 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-05 18:40 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Dave Chinner <david@fromorbit.com> - 2016-10-04 21:50 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-05 18:50 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Jan Kara <jack@suse.cz> - 2016-10-06 09:30 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-06 19:20 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Dave Chinner <david@fromorbit.com> - 2016-10-07 00:00 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-07 19:20 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Dave Chinner <david@fromorbit.com> - 2016-10-08 01:00 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in         freeze_super() and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-09 18:20 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Dave Chinner <david@fromorbit.com> - 2016-10-10 03:20 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super()  and thaw_super() paths Johannes Weiner <hannes@cmpxchg.org> - 2016-10-06 15:50 +0200
                Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in         freeze_super() and thaw_super() paths Oleg Nesterov <oleg@redhat.com> - 2016-10-07 19:00 +0200
  [PATCH 1/2] fs/super.c: fix race between freeze_super() and  thaw_super() Oleg Nesterov <oleg@redhat.com> - 2016-09-26 18:10 +0200
    Re: [PATCH 1/2] fs/super.c: fix race between freeze_super() and  thaw_super() Jan Kara <jack@suse.cz> - 2016-09-26 18:20 +0200

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