From patchwork Thu Nov 14 09:16:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Charles Han X-Patchwork-Id: 13874763 Received: from ssh247.corpemail.net (ssh247.corpemail.net [210.51.61.247]) (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 A79B617DFEC for ; Thu, 14 Nov 2024 09:16:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.51.61.247 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731575797; cv=none; b=IW0dnvQnf2j2z6GvbaVfBUtp5fbYgHbhLYegwGYrr4BOfjmLj2dI5z75ynuo3Ho4hfpE5kdk+VdDk0tl5YG8OYncGTR0rPhbay4dMbiA23bUzW0n0M1pC0iXi1R3K8hnwNKtsqC+u5lOhf4fbaEUeK/SaAzBCZl1iBrb1xKuRcY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731575797; c=relaxed/simple; bh=xeniTugjhVgVjWZoY4ing24naU9GM4qgaprE/ADr2+0=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=kf/+I8K9//pcVAyCiD0hKXLaYEfAKvG3Ep75IUPPh6828cKZZkyZz8afaHaifJcGn47iEosnGP0JZQbH/VuZJpIOCo4lGpVnZsCDL4R6M9irX/l6YVqwqtAb52B/UQGjBDC36/Pc66gYcHgRbv5R01fVLRFSSbhxDA3GPz99Les= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=inspur.com; spf=pass smtp.mailfrom=inspur.com; arc=none smtp.client-ip=210.51.61.247 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=inspur.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=inspur.com Received: from ssh247.corpemail.net by ssh247.corpemail.net ((D)) with ASMTP (SSL) id LMF00028; Thu, 14 Nov 2024 17:16:28 +0800 Received: from localhost.localdomain (10.94.17.107) by jtjnmail201605.home.langchao.com (10.100.2.5) with Microsoft SMTP Server id 15.1.2507.39; Thu, 14 Nov 2024 17:16:27 +0800 From: Charles Han To: , , , , CC: , Charles Han Subject: [PATCH] fpga: dfl: fme: Add NULL check in fme_perf_pmu_register Date: Thu, 14 Nov 2024 17:16:26 +0800 Message-ID: <20241114091626.76822-1-hanchunchao@inspur.com> X-Mailer: git-send-email 2.31.1 Precedence: bulk X-Mailing-List: linux-fpga@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 tUid: 2024111417162886a22b1ee761c8c76b4aa56fc5d1e2f5 X-Abuse-Reports-To: service@corp-email.com Abuse-Reports-To: service@corp-email.com X-Complaints-To: service@corp-email.com X-Report-Abuse-To: service@corp-email.com devm_kasprintf() can return a NULL pointer on failure,but this returned value in fme_perf_pmu_register is not checked. Add NULL check in fme_perf_pmu_register, to handle kernel NULL pointer dereference error. Fixes: 724142f8c42a ("fpga: dfl: fme: add performance reporting support") Signed-off-by: Charles Han --- drivers/fpga/dfl-fme-perf.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/fpga/dfl-fme-perf.c b/drivers/fpga/dfl-fme-perf.c index 7422d2bc6f37..db56d52411ef 100644 --- a/drivers/fpga/dfl-fme-perf.c +++ b/drivers/fpga/dfl-fme-perf.c @@ -925,6 +925,8 @@ static int fme_perf_pmu_register(struct platform_device *pdev, PERF_PMU_CAP_NO_EXCLUDE; name = devm_kasprintf(priv->dev, GFP_KERNEL, "dfl_fme%d", pdev->id); + if (!name) + return -ENOMEM; ret = perf_pmu_register(pmu, name, -1); if (ret)