From nobody Tue Feb 10 15:43:47 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CBCAF12FF6E; Wed, 27 Mar 2024 12:09:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711541372; cv=none; b=PKjdGaMo/zEN2JCaJcACn5ypxU6/GWIlnk9FuVHlW6pBOC4yMq6aJMxkpGR5L08RzmUQA98JdmtVwft4Yf8S3R3sFQhA1jW7gvtpmfyAX4ql2/K8IUtFR/Z613IRembrSpk2Jiho6+qNIe9fXZIlBSrnojxUInp2WCkNWO6qyBc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711541372; c=relaxed/simple; bh=r8CjedoAGOnsR5731C64zxM8vQnk7uyMIQsl69lVsig=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=M59DT+Y2WPGLSZ+sh73jxL2ZIGgEKXxeKwjn9+s7KQGhoFsGX96FwsZ0BBChD+if5L2beYa89TbHmU7p8EFc9f6ZqqPEqylPAPk73tIXgY4Do07SkfQN0T7UWeF5h0nNHZ2uFfLCL7cDQqPy/BE9pw3IkgdzRoPsll1zjn3TtoI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ch5m27B2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ch5m27B2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 945B8C43390; Wed, 27 Mar 2024 12:09:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711541372; bh=r8CjedoAGOnsR5731C64zxM8vQnk7uyMIQsl69lVsig=; h=From:To:Cc:Subject:Date:From; b=ch5m27B2+5tUvH0Vy4apYSI9xNMI5LFPhNouCo98Xw9emKJBggC+HJRsHqTyaKSRV vkPU4BExp5l/ED+ujWMTBAoN3LDKn2e1wqAd62RZLhTWkQd9zBd2CfxYezTUNfyWtg YzLMssUQx5vx8ntayQIDMCy1ns/RXyJrkG4Oo5KYfCrY6toCl0n9aNbZBgw3M/LlhE bnDKO7VgSbaObhBLnalGXuxOkUg19pxTRciypieagJ7W1n+REtMhjBTrdSgwT+418S SmpOV9nlN7watBRx5dLLddFwGCgdupt1TADgqF0O8YIvAs1LNJ+/7K0pxZdudQurIj zETx6OwsmrhQg== From: Sasha Levin To: stable@vger.kernel.org, nirmoy.das@intel.com Cc: Andi Shyti , Shawn Lee , Rodrigo Vivi , Tvrtko Ursulin , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: FAILED: Patch "drm/i915: Check before removing mm notifier" failed to apply to 6.6-stable tree Date: Wed, 27 Mar 2024 08:09:30 -0400 Message-ID: <20240327120930.2827120-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha Reviewed-by: Rodrigo Vivi ------------------ original commit in Linus's tree ------------------ From db7bbd13f08774cde0332c705f042e327fe21e73 Mon Sep 17 00:00:00 2001 From: Nirmoy Das Date: Mon, 19 Feb 2024 13:50:47 +0100 Subject: [PATCH] drm/i915: Check before removing mm notifier Error in mmu_interval_notifier_insert() can leave a NULL notifier.mm pointer. Catch that and return early. Fixes: ed29c2691188 ("drm/i915: Fix userptr so we do not have to worry abou= t obj->mm.lock, v7.") Cc: # v5.13+ [tursulin: Added Fixes and cc stable.] Cc: Andi Shyti Cc: Shawn Lee Signed-off-by: Nirmoy Das Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20240219125047.28906-1-= nirmoy.das@intel.com Signed-off-by: Tvrtko Ursulin --- drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/= i915/gem/i915_gem_userptr.c index 0e21ce9d3e5ac..61abfb505766d 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c @@ -349,6 +349,9 @@ i915_gem_userptr_release(struct drm_i915_gem_object *ob= j) { GEM_WARN_ON(obj->userptr.page_ref); =20 + if (!obj->userptr.notifier.mm) + return; + mmu_interval_notifier_remove(&obj->userptr.notifier); obj->userptr.notifier.mm =3D NULL; } --=20 2.43.0