From: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>
To: Matthew Auld <matthew.auld@intel.com>,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915/ttm: Fix illegal addition to shrinker list
Date: Wed, 10 Nov 2021 11:31:05 +0100 [thread overview]
Message-ID: <ca6147d1-c862-b727-dca4-85dee33912b0@linux.intel.com> (raw)
In-Reply-To: <a58e1d8e-68f8-0a81-4c2d-4cc21aeb37e3@intel.com>
On 11/10/21 11:29, Matthew Auld wrote:
> On 10/11/2021 08:55, Thomas Hellström wrote:
>> There's a small window of opportunity during which the adjust_lru()
>> function can be called with a GEM refcount of zero from the TTM
>> eviction code. This results in a kernel BUG().
>>
>> Ensure that we don't attempt to modify the GEM shrinker lists unless
>> we have a GEM refcount.
>>
>> Fixes: ebd4a8ec7799 ("drm/i915/ttm: move shrinker management into
>> adjust_lru")
>> Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
> Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Thanks for reviewing, Matt.
/Thomas
next prev parent reply other threads:[~2021-11-10 10:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 8:55 [Intel-gfx] [PATCH] drm/i915/ttm: Fix illegal addition to shrinker list Thomas Hellström
2021-11-10 10:09 ` [Intel-gfx] ✓ Fi.CI.BAT: success for " Patchwork
2021-11-10 10:29 ` [Intel-gfx] [PATCH] " Matthew Auld
2021-11-10 10:31 ` Thomas Hellström [this message]
2021-11-10 12:16 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for " Patchwork
2021-11-10 13:05 ` Thomas Hellström
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