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Message-ID: <20180417103344.GB8445@kroah.com>
Date: Tue, 17 Apr 2018 12:33:44 +0200
From: Greg KH <greg@...ah.com>
To: Dexuan Cui <decui@...rosoft.com>
Cc: Jan Kara <jack@...e.cz>, Guillaume Morin <guillaume@...infr.org>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Pavlos Parissis <pavlos.parissis@...il.com>,
"stable@...r.kernel.org" <stable@...r.kernel.org>,
"jack@...e.com" <jack@...e.com>,
"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"mszeredi@...hat.com" <mszeredi@...hat.com>
Subject: Re: kernel panics with 4.14.X versions
On Mon, Apr 16, 2018 at 09:10:35PM +0000, Dexuan Cui wrote:
> > From: Jan Kara <jack@...e.cz>
> > Sent: Monday, April 16, 2018 07:41
> > ...
> > How easily can you hit this? Are you able to run debug kernels / inspect
> > crash dumps when the issue occurs? Also testing with the latest mainline
> > kernel (4.16) would be welcome whether this isn't just an issue with the
> > backport of fsnotify fixes from Miklos.
>
> It's not easy for us to reproduce the fsnotify() lockup issue, and actually
> we still don't have an easy & reliable way to reproduce it.
>
> According to our tests, v4.16 doesn't have the issue.
> And v4.15 doesn't have the issue either, if I recall correctly.
> I only know the issue happens to v4.14.x and 4.13.x kernels
Any chance to run 'git bisect' between 4.14 and 4.15 to find the fix?
thanks,
greg k-h
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