From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (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 5E3B419FA8A for ; Tue, 13 Aug 2024 15:08:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723561685; cv=none; b=DxB/s2vhTUzxJp1WUtq6hRhD2DtBeXwFBXasLczjJkb7l/JbXChoiJUPewUPi+/CCRnjbqegZ3u1J6iPZ/GKeZ5HVT6X1i0yuAe2B1ZW6C8LCc2tJu82hWZ1d12dKRXhnGVGDUGUj50IHux1DUv4cqBUUpUcVL0btKtBI6LQuCU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723561685; c=relaxed/simple; bh=0SUSjI1aRMV7yB5WWwbS893feIJjVQdA6vnvqLmSMKo=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=LlxzkApYfH/Lr2JCvZ32aVOFVuT0KLZ/g89UIGzOyrH18fNBcfUg4oN05x58wrZN0iOVi2AtQu/50nQWylmCzKqO3ltxc1px/jWG6vAM/5brlzV3qRWP0Ho0kc0UDy3fQLaxvxd0gep1UK0KDqMBSSZ04Rn9g8nmQR1wdWruLi4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--surenb.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=WNS9y8wc; arc=none smtp.client-ip=209.85.128.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--surenb.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="WNS9y8wc" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-6902dc6d3ffso138540707b3.2 for ; Tue, 13 Aug 2024 08:08:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1723561683; x=1724166483; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=HItAAQ4Cu003jbkia8AheTp1hPIpjiafpUpcTgjSBk4=; b=WNS9y8wcbuMuoJOr1DOvA7F1bTyw6Adta3B6GYyLlE73jeBxUScLWdnrV1/cGUNdKi 0+MIzYCUjWgmEJR+UTR5bcqWcW7k27/A/2jgM+bboMhG4rrYX5am4sS2mXu/Y7bu1ENT 1XLL9lA7TmI+XXmhIgredCJPAvHN4AeO6gdeXfsiY0CuR4yXgfkj/bkbhMVz7bu0QE/m tdeDxz8zi0ZJTS7beShTKR8sMSNhsuIbdTRkidXUa/W7EzuXE9mpaoxAPu0yGD8IzG7n x4h3EBJdBP4kEfqw+NVv3aKC4UryL67F8xJUI64M3pCnGOsSGtmJM8+SGFES4mmM1l18 mn5w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723561683; x=1724166483; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=HItAAQ4Cu003jbkia8AheTp1hPIpjiafpUpcTgjSBk4=; b=KW1FWzxqfkblzhNOCYbup+0TSxqz+FoPgXMFOO2+xprlOMMg5eq/YNOuAuKOXBTSwK nWlMKOCPk74mx768iGYiv5AvWxXm2nFP+iVXBZTHWgVeqnORwWB7vOfT3HQFkYyAlcKl 1qbx3D4hFgJgSNDPW43J27LsW3ISRVSLk6+Wk8BXLj4MwA1Vw6bTc+lNqFihbQCMIx27 3DzyIk+rOLIxLmg0yqGg648n0ehYk6NroCLDngOQ8s9k6IE/K3SJ0RuuM52ldxTDzn4+ /2/E5rLgvBgcsAHIsERfzBg3/JYn3k1bfRtna9qvhkFriSzUIXjaNfBgjoWQFpfvXnoq 9umQ== X-Forwarded-Encrypted: i=1; AJvYcCUv7FaTpVZvvCZL6+T4yNH+r3plgrZUP585z7EhFU1j5qACmLmT9QoFOT49AR353eHF2o1hE0fklExjSDMyc6dYl7rtEXqGyOdNKPC3 X-Gm-Message-State: AOJu0Yz1vQ2GlXdLeAtJetc3q8Mxz2i8+CyIOKP1j/EFUhRf/lOhh0bp 9tW3+xafHQh0fvl+qaqOU6Gq88Cie4bVpiQnVdj3WvWXuT2ZSwS2l1L2HUBFx8QpOte4A6ypXFZ oyw== X-Google-Smtp-Source: AGHT+IG/nKnomNtLuqj0m6U9iTDpGVWXD3ZvVIbVbvNz/CQySgPPuus4RRP2iUTRkRmZvV/6nAgz4mxWbJE= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:201:b416:2d8c:d850:78]) (user=surenb job=sendgmr) by 2002:a0d:d146:0:b0:6a9:3d52:79e9 with SMTP id 00721157ae682-6a975ab0573mr1862217b3.4.1723561683324; Tue, 13 Aug 2024 08:08:03 -0700 (PDT) Date: Tue, 13 Aug 2024 08:07:57 -0700 In-Reply-To: <20240813150758.855881-1-surenb@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240813150758.855881-1-surenb@google.com> X-Mailer: git-send-email 2.46.0.76.ge559c4bf1a-goog Message-ID: <20240813150758.855881-2-surenb@google.com> Subject: [PATCH v3 2/2] alloc_tag: mark pages reserved during CMA activation as not tagged From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: kent.overstreet@linux.dev, david@redhat.com, vbabka@suse.cz, pasha.tatashin@soleen.com, souravpanda@google.com, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, surenb@google.com, stable@vger.kernel.org Content-Type: text/plain; charset="UTF-8" During CMA activation, pages in CMA area are prepared and then freed without being allocated. This triggers warnings when memory allocation debug config (CONFIG_MEM_ALLOC_PROFILING_DEBUG) is enabled. Fix this by marking these pages not tagged before freeing them. Fixes: d224eb0287fb ("codetag: debug: mark codetags for reserved pages as empty") Signed-off-by: Suren Baghdasaryan Cc: stable@vger.kernel.org # v6.10 --- Changes since v2 [1]: - Add and use clear_page_tag_ref helper, per David Hildenbrand https://lore.kernel.org/all/20240812192428.151825-1-surenb@google.com/ mm/mm_init.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/mm_init.c b/mm/mm_init.c index 907c46b0773f..13c4060bb01a 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -2245,6 +2245,8 @@ void __init init_cma_reserved_pageblock(struct page *page) set_pageblock_migratetype(page, MIGRATE_CMA); set_page_refcounted(page); + /* pages were reserved and not allocated */ + clear_page_tag_ref(page); __free_pages(page, pageblock_order); adjust_managed_page_count(page, pageblock_nr_pages); -- 2.46.0.76.ge559c4bf1a-goog