Date: Tue, 21 Feb 2017 00:58:07 +0100 From: Mateusz Guzik <mjguzik@gmail.com> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: freebsd-current@freebsd.org, freebsd-hackers@freebsd.org Subject: Re: drm2, i915kms cause instant lock-up Message-ID: <20170220235807.GC26759@dft-labs.eu> In-Reply-To: <20170220235224.GA91194@troutmask.apl.washington.edu> References: <20170220235224.GA91194@troutmask.apl.washington.edu>
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On Mon, Feb 20, 2017 at 03:52:24PM -0800, Steve Kargl wrote: > With a kernel and world from r313943 sources (circa > Feb 19, 2017), kldload of either drm2.ko or i915kms.ko > will lock up the system. There is no keyboard response, > screen output, or panic. Just a locked up system. > > A kernel from r313027 and its modules boots fine. > 'kldload drm2.ko' yields the following in /var/log/messages: > There were quite a few invasive changes in this timeframe. Can you please: 1. switch to 313254 and ensure it works 2. apply https://people.freebsd.org/~mjg/patches/complete-locks.diff and check if it breaks If it does not break, revert the patch and bisect the kernel please. Otherwise I'll devise smaller diffs to narrow this down. -- Mateusz Guzik <mjguzik gmail.com>
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