Re: v4.10-rc8 (-rc6) boot regression on Intel desktop, does not boot after cold boots, boots after reboot

From: Pavel Machek <pavel@ucw.cz>
To: Linus Torvalds <torvalds@linux-foundation.org>,
	fweisbec@gmail.com, wanpeng.li@hotmail.com, peterz@infradead.org,
	riel@redhat.com, tglx@linutronix.de, stable@kernel.org
Cc: "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	USB list <linux-usb@vger.kernel.org>
Subject: Re: v4.10-rc8 (-rc6) boot regression on Intel desktop, does not boot after cold boots, boots after reboot
Date: Thu, 16 Feb 2017 18:25:35 +0100	[thread overview]
Message-ID: <20170216172535.GA7868@amd> (raw)
In-Reply-To: <20170216111144.GA12377@amd>

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Hi!

> > > 4.10-rc4 broken
> > > 4.10-rc3 ok
> > 
> > Hmm. If those actually end up being reliable, then there's not a whole
> > lot in between them wrt PCI or USB.
> > 
> > What looked like the most likely candidate seems to be xhci-specific, though.
> > 
> > But maybe it's something that isn't directly in drivers/{pci,usb}/ and
> > just interacts badly.
> 
> Ok. I _hope_ my tests are ok. Bisect log so far is:

And the winner is:

pavel@half:/data/l/linux$ git bisect bad
24b91e360ef521a2808771633d76ebc68bd5604b is the first bad commit
commit 24b91e360ef521a2808771633d76ebc68bd5604b
Author: Frederic Weisbecker <fweisbec@gmail.com>
Date:   Wed Jan 4 15:12:04 2017 +0100

    nohz: Fix collision between tick and other hrtimers

									Pavel

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