From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A9ACBCAC5B0 for ; Thu, 2 Oct 2025 13:12:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 57DAF10E19F; Thu, 2 Oct 2025 13:12:49 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="amW3cF3C"; dkim-atps=neutral Received: from mail-lj1-f179.google.com (mail-lj1-f179.google.com [209.85.208.179]) by gabe.freedesktop.org (Postfix) with ESMTPS id AA00D10E7A2 for ; Thu, 2 Oct 2025 08:48:34 +0000 (UTC) Received: by mail-lj1-f179.google.com with SMTP id 38308e7fff4ca-373a1ab2081so6996921fa.3 for ; Thu, 02 Oct 2025 01:48:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1759394913; x=1759999713; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=z69FFVofVQpQbXPazzIrMIWvZw9YVt4e5mOAMA1/qQ0=; b=amW3cF3C6ZKw/q7Yx8thL8NgHr2N24pfoIvmC2f311h72cp+hbJgS0CZ3Ci99SRriQ MF8nac6sOi1f9UlgxkUp4RMUT8+71Zj5TkUUW8Sx/UUi28fYJtijlhipmdiJUR/4jXMv KnnOgdq81zE/+JFJuJ/kdb/DTuNopQRBewvP7qvFDrkkgsNmMk09SLoCPgV7lAtc1HZN J8BUKj0anytvichfyeSm/trtzkP1nXWPIy5P9urvOVe9vaWEo34dDEJ8xcm8XAaPLyeL sEuSNGpJx3T73zacSZzN7ObuUv1/Jz+NzOtfWFYR/cy/gRLTYAIiqPr0gwXofCnIYy/b SC5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759394913; x=1759999713; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=z69FFVofVQpQbXPazzIrMIWvZw9YVt4e5mOAMA1/qQ0=; b=INSxoV7rXHYXZIbj8RI55sgCnRqRo3A8ciXZcKFn4kHoQwvCYRWTadAhO6hk2AqEay JAHE6mJv93QKuWcVGJFq/QhSz+ZSVKL8Nw9MCsJ/RuozEFgwq3Hi4V0xbXxgJThuxU4B MwBPzpEZn/gzteWMKwSsbAwexyq7cGJ8zWhaPdOkSiZbMb3F9mAPrIrRjzP0eHvlU01C RzhbGhoA6PwlvGhCNPIq+ljzUlKfujOkT0FH2O4YY7AGREBTA9im4MtSN/EvUT7m95X3 OncgWVg5vAECX/yKKiddh+7lzB6ZvZjMAK9nS3JAe+on4BqhUWW37fq6SwXj+JAMxQut wagQ== X-Forwarded-Encrypted: i=1; AJvYcCXfJS8qVmcRLqI9L9+V/xBc9/MtjZ+4AQNXeU6SgotQDHwMJntiNoubpWmyNIQZ25WHaFg/qM7Ml00=@lists.freedesktop.org X-Gm-Message-State: AOJu0Yw+aNYQiII3aar6QwvOVzWQtXLXS2w1f2abQP+gEIMqhLZXFcsp QR1cGBKdBMWzLefeVzPxC9/SRiJe9xiXPj53WHFYkq+QgkgvhdEWtBD7 X-Gm-Gg: ASbGnctQ81sLe99gSE0lGbNRE5s/EgqabJvC8RsK0UEXjGLCGsksU3KR93ItmbO+lvr KNW6YshRh5UhPawOWCEQolZrnZkPJLTVG/3eMoo3jS18r3+2Jy4IyflTXDN/IyF+LRCKncPtVSV 7RugVVApSHG35OS+toNAcKvENiYLJrgO+K3CcCllaPmFUSKx96byNrF96um5Gq1En2T4c//zSYt SORe9KVrQYzBFzshBWQJT/M5pqUBtocOjnCYptlEMRnR3oJ4iwLdLDKhzQJaQKSnObVhH942Le6 QWD3AJ5v2OySiHTXiVwMb6llCYa63flKUQ2JqBMU0C4DF9KGsV5cFi9+bEPTlkXtISyddZJ0xVG iNFz6xVoxdPRhAlLKIpqu8C7yoWKY/Lml7uAM3Mdkz+r1u46xEaedRBh0xqcDRU2U+lsoTkA38a 0PnX8N+icdqmyif5lV/b2FQ6x5zm+v+nNCM6+g+Yic X-Google-Smtp-Source: AGHT+IHSpWYO4jWecZ3WaJ5bbAKSHrzDEFpF/Bo9oTWfMoBxUJCFoeCGVTF74e3XeZ0egpGJ1oJ8eA== X-Received: by 2002:a2e:a912:0:b0:36d:501:76d8 with SMTP id 38308e7fff4ca-373a7430622mr20975301fa.31.1759394912620; Thu, 02 Oct 2025 01:48:32 -0700 (PDT) Received: from localhost.localdomain (broadband-109-173-93-221.ip.moscow.rt.ru. [109.173.93.221]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-373ba4cdf62sm5338621fa.51.2025.10.02.01.48.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Oct 2025 01:48:32 -0700 (PDT) From: Alexandr Sapozhnkiov To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: Alexandr Sapozhnikov , linux-media@vger.kernel.org, lvc-project@linuxtesting.org Subject: [PATCH 5.10] gpu/i915: fix error return in mmap_offset_attach() Date: Thu, 2 Oct 2025 11:48:26 +0300 Message-ID: <20251002084828.11-1-alsp705@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Thu, 02 Oct 2025 13:12:48 +0000 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Alexandr Sapozhnikov In the drm_vma_node_allow function, kmalloc may return NULL, in which case the file element will not be added to the mmo->vma_node list. It would be good to not ignore this event, but at least log an error message. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Alexandr Sapozhnikov --- drivers/gpu/drm/i915/gem/i915_gem_mman.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index a2195e28b625..adaef8f09d59 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -706,8 +706,11 @@ mmap_offset_attach(struct drm_i915_gem_object *obj, mmo = insert_mmo(obj, mmo); GEM_BUG_ON(lookup_mmo(obj, mmap_type) != mmo); out: - if (file) - drm_vma_node_allow_once(&mmo->vma_node, file); + if (file) { + err = drm_vma_node_allow_once(&mmo->vma_node, file); + if (err) + goto err; + } return mmo; err: -- 2.43.0