From nobody Fri Jun 12 12:49:01 2026 Received: from cvsmtppost102.wmail.worksmobile.com (cvsmtppost102.wmail.worksmobile.com [125.209.209.46]) (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 C7CDC330315 for ; Thu, 14 May 2026 19:32:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=125.209.209.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778787153; cv=none; b=lnrGI0uUWxGPh0qIu2NMoOdXr3gSSR8DB1jsgF5nAAYB2wNy7JypTJDRg0i7xCsBaDSzsD6kCkGH3h0foApSulubn7xlEP9Kll0PbvHm2C6ctILo5iTXXnaNHGux/c7w5DT8VnGmhHRx+jxHaBSjVFJAk3l7ili5Ek1U4cR5PWs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778787153; c=relaxed/simple; bh=1eHtKfnZZvV2FZWSbFdMFCZ/Jeqh4dQweFotTtU0Uak=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=At8qUC7s9yqIyP4hc/AT5faJCiz6aNg/XvazGq+cVUSXSBMAMHr1TeSq+8K5yeplsNs3W6fHXNiYl+222A5q+hjIJCNOHrIZHgZnk/Tk2bzEsSoKMe40jiDXDjdxMyvzB51dnyEAxqDiNmsi7iKXUFcjPjM6upA3Mv35TgdIs/0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=korea.ac.kr; spf=pass smtp.mailfrom=korea.ac.kr; dkim=pass (2048-bit key) header.d=worksmobile.com header.i=@worksmobile.com header.b=n8kHmuWE; dkim=pass (1024-bit key) header.d=korea.ac.kr header.i=@korea.ac.kr header.b=Zc9nNL6n; arc=none smtp.client-ip=125.209.209.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=korea.ac.kr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=korea.ac.kr Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=worksmobile.com header.i=@worksmobile.com header.b="n8kHmuWE"; dkim=pass (1024-bit key) header.d=korea.ac.kr header.i=@korea.ac.kr header.b="Zc9nNL6n" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=worksmobile.com; s=s20171120; t=1778787150; bh=1eHtKfnZZvV2FZWSbFdMFCZ/Jeqh4dQweFotTtU0Uak=; h=From:To:Subject:Date:Message-Id:From:Subject:Feedback-ID: X-Works-Security; b=n8kHmuWElZGmiBaw0VKb3pQgBkPBbzRCcjMfvQiLc1uIJsH8+c7aG/tlQmgqwlgBl GqMHpIGk8xi1sUoaSIUU2rTfALamHYaUASDLa6vTkEcx8j6pMhZFc0L8bE8OUch8/y /ZNnpZaBAqZcv/OR53ocUwspk/z8hHZtnyHhJbk/HV4eLZwCW8PqZW5n5+sjBwy8ok So17h+JjaMJJXHPTRLBe6maPxx8+1cBGYf6wzq/vuJ2bYdSyGeTasLSyyqz0njUgJv f2KA1V/xpHwNvXLqQb/mWaFTrq75XtF2fE+uN3fkmtN8RVkRfaYJRI/X8TZD1SSI95 pBabM9LX+o/pg== Received: from cvsendbo001.wmail ([10.113.20.163]) by cvsmtppost102.wmail.worksmobile.com with ESMTP id 7DEdRA6MRHKUvBHoJ1XFHQ for ; Thu, 14 May 2026 19:32:30 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=korea.ac.kr; s=naverworks; t=1778787150; bh=1eHtKfnZZvV2FZWSbFdMFCZ/Jeqh4dQweFotTtU0Uak=; h=From:To:Subject:Date:Message-Id:From:Subject:Feedback-ID: X-Works-Security; b=Zc9nNL6nQmVpoqHx3BhhpSVgEdphZnO22JN7CihzTL/vanUJo7RFGjGO9fT9gOHRP hggV07eGEVMd7EaiU4HQhOXF24/hg6C5JGXUaJ7Go3SNeH+6UjbZkEhbyIcrIJXEUq GZ8Zr4BtdzWI/JevJzUZAl0umBZrKqvlgwGP0+Og= X-Session-ID: DSRmjtN-SyWT0Zk01YbWfA X-Works-Send-Opt: penljAIYjHm/FqM9FqJYFxMqFNwYjAg= X-Works-Smtp-Source: A9K9Fq2XFqJZ+HmlFAbd+6E= Received: from s2lab05.. ([163.152.163.130]) by jvnsmtp403.gwmail.worksmobile.com with ESMTP id DSRmjtN-SyWT0Zk01YbWfA for (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384); Thu, 14 May 2026 19:32:29 -0000 From: Ingyu Jang To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Simona Vetter Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/i915/gt: Use IS_ERR() check for kernel_context() in selftests Date: Fri, 15 May 2026 04:32:27 +0900 Message-Id: <20260514193227.2472962-1-ingyujang25@korea.ac.kr> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" kernel_context() returns an error pointer on failure, never NULL, so the NULL checks on its return value are unreachable. On a real allocation failure the subsequent dereference of the returned ERR_PTR (e.g. ctx_hi->sched.priority =3D ...) would oops the test kernel. Use IS_ERR() and propagate the actual error via PTR_ERR() in live_preempt(), live_late_preempt(), live_preempt_timeout() and preempt_client_init(). Signed-off-by: Ingyu Jang --- drivers/gpu/drm/i915/gt/selftest_execlists.c | 28 ++++++++++++-------- 1 file changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/selftest_execlists.c b/drivers/gpu/drm= /i915/gt/selftest_execlists.c index 21e5ed9f72a30..36f51805f74e3 100644 --- a/drivers/gpu/drm/i915/gt/selftest_execlists.c +++ b/drivers/gpu/drm/i915/gt/selftest_execlists.c @@ -1742,13 +1742,15 @@ static int live_preempt(void *arg) int err =3D -ENOMEM; =20 ctx_hi =3D kernel_context(gt->i915, NULL); - if (!ctx_hi) - return -ENOMEM; + if (IS_ERR(ctx_hi)) + return PTR_ERR(ctx_hi); ctx_hi->sched.priority =3D I915_CONTEXT_MAX_USER_PRIORITY; =20 ctx_lo =3D kernel_context(gt->i915, NULL); - if (!ctx_lo) + if (IS_ERR(ctx_lo)) { + err =3D PTR_ERR(ctx_lo); goto err_ctx_hi; + } ctx_lo->sched.priority =3D I915_CONTEXT_MIN_USER_PRIORITY; =20 if (igt_spinner_init(&spin_hi, gt)) @@ -1834,12 +1836,14 @@ static int live_late_preempt(void *arg) int err =3D -ENOMEM; =20 ctx_hi =3D kernel_context(gt->i915, NULL); - if (!ctx_hi) - return -ENOMEM; + if (IS_ERR(ctx_hi)) + return PTR_ERR(ctx_hi); =20 ctx_lo =3D kernel_context(gt->i915, NULL); - if (!ctx_lo) + if (IS_ERR(ctx_lo)) { + err =3D PTR_ERR(ctx_lo); goto err_ctx_hi; + } =20 if (igt_spinner_init(&spin_hi, gt)) goto err_ctx_lo; @@ -1934,8 +1938,8 @@ struct preempt_client { static int preempt_client_init(struct intel_gt *gt, struct preempt_client = *c) { c->ctx =3D kernel_context(gt->i915, NULL); - if (!c->ctx) - return -ENOMEM; + if (IS_ERR(c->ctx)) + return PTR_ERR(c->ctx); =20 if (igt_spinner_init(&c->spin, gt)) goto err_ctx; @@ -3384,13 +3388,15 @@ static int live_preempt_timeout(void *arg) return 0; =20 ctx_hi =3D kernel_context(gt->i915, NULL); - if (!ctx_hi) - return -ENOMEM; + if (IS_ERR(ctx_hi)) + return PTR_ERR(ctx_hi); ctx_hi->sched.priority =3D I915_CONTEXT_MAX_USER_PRIORITY; =20 ctx_lo =3D kernel_context(gt->i915, NULL); - if (!ctx_lo) + if (IS_ERR(ctx_lo)) { + err =3D PTR_ERR(ctx_lo); goto err_ctx_hi; + } ctx_lo->sched.priority =3D I915_CONTEXT_MIN_USER_PRIORITY; =20 if (igt_spinner_init(&spin_lo, gt)) --=20 2.34.1