From nobody Sat Feb 7 05:48:31 2026 Received: from mail-wm1-f47.google.com (mail-wm1-f47.google.com [209.85.128.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 131277263B for ; Sat, 18 Oct 2025 19:12:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.47 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760814750; cv=none; b=lTtJdeh/6h+sjT27gWV6KmMpWlDb8mIKMKvvGwCOZukYnpIOcDfl2NbmIwkHlusFvOIxUz6Pt4UM/V+UoJ0ZrQk88qoNZ2QQR8PpgnnufBshDR7ZEp4rP2/9Q1zBybEhfZ0g859WnVNvfwoTTFf6KqfD03BEoyORJiZLGEJ5VUM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760814750; c=relaxed/simple; bh=Cpgrt5SbcQFH2dEyWj8y2+kKTm0J/7DumNlggph2KeI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Nk89j5yVpxwqdQqHK5wl2FacuIGt5kWCt69DRvWuXGvnpNYxhJ9cAZrtVS7MyPxQg8Qp1Lso8m6xsfDkgxyJasPxktyLWBwuPmUJyGWjoI3Pcp6TJImC8II35tA9kzRCiNMRGaRih/pdal2csOp11bEevlpC/yAseHQfqttp+Mk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=fh0DnTYv; arc=none smtp.client-ip=209.85.128.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fh0DnTYv" Received: by mail-wm1-f47.google.com with SMTP id 5b1f17b1804b1-46e610dc064so641245e9.3 for ; Sat, 18 Oct 2025 12:12:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1760814747; x=1761419547; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=uenq9zUN4jnOACfiis104z+6oR/uGp0g0fP3KoqPQzk=; b=fh0DnTYvZsc2Z0JSBo8/cuXdVKen3WABf0wpyfUhY8MdrvN9+s22t4h94MpL/KupHK xql5tdOyPmBJw24ATXuHk+bkuznKQf01777oW2m6I5+T4iUPYeMt05mYHIlpLg+LHQT/ Xuz+rStQsGU4MxXAg7MjsxU1Ybq/2gZx7rMCxyH93823XjzGxNkVE3etRVWaxMKYes1k 9iEtoNyFgdbi02hVVlLH0vFSqvs4sqOePH1Fv05ckzAv10Mizfky3/EACxwJRUIpYoGG q6Y6Y8cCKLKWwkHB/az1U+h5PTEtE2XQlbjF0FfYcY0s8UJYPpwCD14DfUjIvDParDkD bOiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760814747; x=1761419547; 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=uenq9zUN4jnOACfiis104z+6oR/uGp0g0fP3KoqPQzk=; b=OngvudJ2is5s5VEnEWdVIQpf+6fSrS6URsitNbsRWPsiplDBnOgDBS6+hzWxvF44i1 L9nLRnTdnHu8iIrUCSph9hh3o9QvWIunWxb5CN9viWidd+rhDJZA2tyeKTvMsWiUtdM+ I4oBkM+y7nVWml88s2jx/ZBqD+vvr14RJs2dYzobxKQHRAgZl+MVHXrBs2FccT/8OX0g iDejljAdJFw9mRCCc2wHDtPBJPYeLLWgSy+i4JV8ZnI2/lR3N0vPEHXgC0kLkugRaqAQ JUo/PO7kHUNce9eq6cUI97Omiq2U2yJSxrYz2MoE0woCBG6MYcPlmp3OWyS9AHj9Mwmg BH2w== X-Forwarded-Encrypted: i=1; AJvYcCVdtodvDoB0pIG1u22SzXf5uBctl2MiWpP6dK83oTvSaquB06AA3Fc3VnC8Plrg0pItvIcQT9N++Cg0keo=@vger.kernel.org X-Gm-Message-State: AOJu0YzaUGPcv45SQQGuWIvy64diDbAeXlvfuljUH4cqZUqqILpdA7ig ympA0cM4i1p+JXQVU8lw5ZtM6agOnmyGvydMBO10K4CP8PIEBEQhDz8u X-Gm-Gg: ASbGnctJPCHe7ZwxBMPl+z7dZ00u2y444N8jExYSQoZ8QFiZeovGCCsngF4DHMQsTfk Saf8GGbPsoyrkqBW1xsZDFc/bo7/yMb/3o8cJeWbmwlxYD9WVMuKc9wjO07BM1HvTLqxnzkUGAI SCjuUKeNFsccQQT0zlL48VIWyF6P8emazkE6fY/pFhXlyhFG95vpC+5YX5HMMdh+Lu6zLzkTeFr Nz0NDmI1dYt3Xvs0/FCs4G6Um7lKXT11G5TWSPVEb+d4ltcPHdBYzlWymcnOgGRfurP8ofR9A+H fv/fo6MU75g6MhxUj68UbcUMrouebecKqYG2To7A0HnddciTSwGceZ398lHSIlj74/C2LbEjpra WjcRGcfj0ztW/P70doITigD7EGiy9fKiygmtntfDPdFjJnfaSaxtEcePzdaR8Kq0bYA04TfZMXu 8loQcY X-Google-Smtp-Source: AGHT+IFeotg3SOqozCDeGAvqxPUt+glB8XDCNwLIM43/UO8gAjt8ouXK8ko6Vt+aDxAZJHhJtcwrow== X-Received: by 2002:a05:600c:3515:b0:471:152a:e57d with SMTP id 5b1f17b1804b1-47117914193mr32306685e9.3.1760814747218; Sat, 18 Oct 2025 12:12:27 -0700 (PDT) Received: from bhk ([165.50.121.102]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-427ea5b3acfsm6406354f8f.14.2025.10.18.12.12.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Oct 2025 12:12:26 -0700 (PDT) From: Mehdi Ben Hadj Khelifa To: akpm@linux-foundation.org, urezki@gmail.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, david.hunter.linux@gmail.com, linux-kernel-mentees@lists.linuxfoundation.org, khalid@kernel.org, Mehdi Ben Hadj Khelifa Subject: [PATCH] mm/vmalloc: Use kmalloc_array() instead of kmalloc() Date: Sat, 18 Oct 2025 21:11:48 +0100 Message-ID: <20251018201207.27441-1-mehdi.benhadjkhelifa@gmail.com> X-Mailer: git-send-email 2.51.1.dirty 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" The number of NUMA nodes (nr_node_ids) is bounded, so overflow is not a practical concern here. However, using kmalloc_array() better reflects the intent to allocate an array of unsigned ints, and improves consistency with other NUMA-related allocations. No functional change intended. Signed-off-by: Mehdi Ben Hadj Khelifa Reviewed-by: Khalid Aziz Reviewed-by: Uladzislau Rezki (Sony) Reviewed-by: Vishal Moola (Oracle) --- mm/vmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 798b2ed21e46..697bc171b013 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -5055,7 +5055,7 @@ static int vmalloc_info_show(struct seq_file *m, void= *p) unsigned int *counters; =20 if (IS_ENABLED(CONFIG_NUMA)) - counters =3D kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL); + counters =3D kmalloc_array(nr_node_ids, sizeof(unsigned int), GFP_KERNEL= ); =20 for_each_vmap_node(vn) { spin_lock(&vn->busy.lock); --=20 2.51.1.dirty