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x-vs=clean score=-100 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfKIry3sjKnr5e5mhnISO3dYzEVi8wCvC/I2+CiM/EWIPEUq/x8I91SrLj1Y6qJ0hWlKwxkK8X7yHm3CcYg4JEn4xY1j9UvpyLlW3w8CQuhglMDKnviZm yKBWqlgF1W0lTXZc8UhU/rYyPUGLTsEn2XE7eJepO964uLW3XjW+Yt9ELUXtrWcDXngp+AyFutCQUuTbFRdVl96V+ygDx48Ie/rHlaSshdks1pVkCDEFqnDy X-CM-Analysis: v=2.3 cv=FKU1Odgs c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=kj9zAlcOel0A:10 a=Kd1tUaAdevIA:10 a=BYdjmK0F3VFKc_sE9FoA:9 a=CjuIK1q_8ugA:10 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752221AbeDQKdw (ORCPT ); Tue, 17 Apr 2018 06:33:52 -0400 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:43349 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752096AbeDQKdu (ORCPT ); Tue, 17 Apr 2018 06:33:50 -0400 X-ME-Sender: Date: Tue, 17 Apr 2018 12:33:44 +0200 From: Greg KH To: Dexuan Cui Cc: Jan Kara , Guillaume Morin , Haiyang Zhang , Pavlos Parissis , "stable@vger.kernel.org" , "jack@suse.com" , "linux-fsdevel@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "mszeredi@redhat.com" Subject: Re: kernel panics with 4.14.X versions Message-ID: <20180417103344.GB8445@kroah.com> References: <20180416132550.d25jtdntdvpy55l3@bender.morinfr.org> <20180416144041.t2mt7ugzwqr56ka3@quack2.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Mon, Apr 16, 2018 at 09:10:35PM +0000, Dexuan Cui wrote: > > From: Jan Kara > > 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