From: Oleg Nesterov <oleg@redhat.com>
To: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>,
Dave Chinner <david@fromorbit.com>, Jan Kara <jack@suse.cz>,
Al Viro <viro@zeniv.linux.org.uk>,
Nikolay Borisov <kernel@kyup.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
fstests@vger.kernel.org
Subject: Re: [PATCH V2 2/2] fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths
Date: Fri, 7 Oct 2016 18:52:51 +0200 [thread overview]
Message-ID: <20161007165250.GA1906@redhat.com> (raw)
In-Reply-To: <20161006134449.GB13177@cmpxchg.org>
On 10/06, Johannes Weiner wrote:
>
> On Tue, Oct 04, 2016 at 01:48:00PM +0200, Michal Hocko wrote:
> > Johannes is already looking into this
> > http://lkml.kernel.org/r/20161004093216.GA21170@cmpxchg.org
> >
> > On Tue 04-10-16 13:43:43, Oleg Nesterov wrote:
> > > because of kernel bug:
> > >
> > > [ 2730.242537] run fstests generic/274 at 2016-10-04 05:17:34
> > > [ 2730.738352] XFS (loop1): Mounting V5 Filesystem
> > > [ 2730.741451] XFS (loop1): Ending clean mount
> > > [ 2744.508698] ------------[ cut here ]------------
> > > [ 2744.509190] kernel BUG at ./include/linux/swap.h:276!
> > >
> > > static inline void workingset_node_shadows_dec(struct radix_tree_node *node)
> > > {
> > > VM_BUG_ON(!workingset_node_shadows(node));
> > > node->count -= 1U << RADIX_TREE_COUNT_SHIFT;
>
> We tracked this one down and Linus merged a fix for this issue:
>
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d3798ae8c6f3767c726403c2ca6ecc317752c9dd
Confirm, generic/274 no longer crashes the kernel.
Thanks.
Oleg.
next prev parent reply other threads:[~2016-10-07 16:54 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-26 16:07 [PATCH 0/2] (Was: BUG_ON in rcu_sync_func triggered) Oleg Nesterov
2016-09-26 16:07 ` [PATCH 1/2] fs/super.c: fix race between freeze_super() and thaw_super() Oleg Nesterov
2016-09-26 16:11 ` Jan Kara
2016-09-26 16:08 ` [PATCH 2/2] fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths Oleg Nesterov
2016-09-26 16:18 ` Jan Kara
2016-09-26 16:55 ` [PATCH V2 " Oleg Nesterov
2016-09-27 6:51 ` Jan Kara
2016-09-27 7:14 ` Dave Chinner
2016-09-27 17:29 ` Oleg Nesterov
2016-09-30 17:14 ` Oleg Nesterov
2016-10-02 21:42 ` Dave Chinner
2016-10-03 16:44 ` Oleg Nesterov
2016-10-04 11:43 ` Oleg Nesterov
2016-10-04 11:48 ` Michal Hocko
2016-10-06 13:44 ` Johannes Weiner
2016-10-07 16:52 ` Oleg Nesterov [this message]
2016-10-04 16:58 ` Oleg Nesterov
2016-10-04 20:03 ` Dave Chinner
2016-10-05 16:33 ` Oleg Nesterov
2016-10-04 19:44 ` Dave Chinner
2016-10-05 16:44 ` Oleg Nesterov
2016-10-06 7:27 ` Jan Kara
2016-10-06 17:17 ` Oleg Nesterov
2016-10-06 21:59 ` Dave Chinner
2016-10-07 17:15 ` Oleg Nesterov
2016-10-07 22:52 ` Dave Chinner
2016-10-09 16:14 ` Oleg Nesterov
2016-10-10 1:02 ` Dave Chinner
2016-10-13 16:58 ` Oleg Nesterov
2016-10-13 17:10 ` [PATCH 0/2] (Was: BUG_ON in rcu_sync_func triggered) Oleg Nesterov
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