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Date:   Sat, 2 Oct 2021 08:17:50 -0400
From:   Steven Rostedt <>
To:     Hugh Dickins <>
Cc:     Daniele Ceraolo Spurio <>,
        Matt Roper <>,
        Lucas De Marchi <>,
        Tvrtko Ursulin <>,
        Caz Yokoyama <>,
        LKML <>,
        Linus Torvalds <>,
        Jani Nikula <>,
        Matthew Brost <>,,
Subject: Re: [BUG 5.15-rc3] kernel BUG at

On Sat, 2 Oct 2021 03:17:29 -0700 (PDT)
Hugh Dickins <> wrote:

> Yes (though bisection doesn't work right on this one): the fix

Interesting, as it appeared to be very reliable. But I didn't do the
"try before / after" on the patch.

> seems to have got lost in the system: it has not even appeared in
> linux-next yet. I was going to send a reminder later this weekend.
> Here it is again (but edited to replace "__aligned(4)" in the original
> by the official "__i915_sw_fence_call" I discovered afterwards; and
> ignoring recent discussions of where __attributes ought to appear :-)
> [PATCH] drm/i915: fix blank screen booting crashes

Thanks, I added it to my "fixes" patch set that I apply before testing.
It looks to have done the trick, and the kernel boots now.

Tested-by: Steven Rostedt (VMware) <>

-- Steve

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