From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (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 5E8716139 for ; Mon, 1 May 2023 16:56:35 +0000 (UTC) Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-64115e69e1eso23348156b3a.0 for ; Mon, 01 May 2023 09:56:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1682960195; x=1685552195; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=uHz3gIMQ14LMAlJH3BHlupoStZ8/+BrUL09pT+1nDVs=; b=cL9ulyr1TZmloHcY9ZAQt2916/Hy8kFnLfCTiFsQOyXG21mKZDk2kVsVGS3swW/o9A lmsPI4V+ni8bJ2cDmSOvMhTe7jiZncm+a+dX+h32N0c6xUNbGxEO59xGx2raskwk+yE+ EY40N2q/B5lxnqf+wqKkKUxKcIxmFMWDeQ/MPMZ5UoklVL3SBusyJB6cuGrGjrAev2jt I6daIpOCKx+oNZEO+zjvrtYAnmo4PPKmPdsrXndRo+l1Ieu4A+pt+fjUYtVugs+1Ncqh keNiqCygIJKFaCxV1denDbSpt/uk9T3I2i0PdEP0vYROV8UgAo/d+Ogm15HjT6dg+WeL DFBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682960195; x=1685552195; 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=uHz3gIMQ14LMAlJH3BHlupoStZ8/+BrUL09pT+1nDVs=; b=P5Vl1wV6s2863/j9bVaxTStPXIAOF53itOIDeESRCpJiRd3xiaim7NcpNoD9xzMwax fRKwVmjI8siVQsGu40Tte5Ig3oF/vGSAwSzsepdGCVH79RwQRmA+3PK50qvukbxHRvZE ajIAqfYxDPuXQ1hbMBFC0lNCiNyeoEnJY7HQhrgrQBLCqzMARU89J020JEFIZEZnmsCh hDDmAmcWF3DPLF7sxCdouAakARvq+vEmEXXfrbJXjqBfT3SIq4YPLU/0PdwHWYNycGtu R4IfGAxor5PwTnEbjG48yfRqWrM61V99FMf1LJsAUgK7vLOP2jb6MR6D/h2n5JKeC0OU SxJg== X-Gm-Message-State: AC+VfDzhp9o7fMv/Mgir/7mueszViyQFNzEwa1ZubB+dneqfNiFhchaW v5Le6JCdy2818jEowey4iBeTWs/oF+I= X-Google-Smtp-Source: ACHHUZ7qtjt6xJv0/W6KanE/G1kJWq4JffXkn4YmB84VAxkpL2X6o57PZ5XdLwRiQeUXxZyrcuCDjEjhXCs= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:201:6d24:3efd:facc:7ac4]) (user=surenb job=sendgmr) by 2002:a17:90a:5105:b0:244:9620:c114 with SMTP id t5-20020a17090a510500b002449620c114mr3673305pjh.1.1682960194723; Mon, 01 May 2023 09:56:34 -0700 (PDT) Date: Mon, 1 May 2023 09:54:48 -0700 In-Reply-To: <20230501165450.15352-1-surenb@google.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20230501165450.15352-1-surenb@google.com> X-Mailer: git-send-email 2.40.1.495.gc816e09b53d-goog Message-ID: <20230501165450.15352-39-surenb@google.com> Subject: [PATCH 38/40] codetag: debug: mark codetags for reserved pages as empty From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: kent.overstreet@linux.dev, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, roman.gushchin@linux.dev, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, corbet@lwn.net, void@manifault.com, peterz@infradead.org, juri.lelli@redhat.com, ldufour@linux.ibm.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, peterx@redhat.com, david@redhat.com, axboe@kernel.dk, mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, dennis@kernel.org, tj@kernel.org, muchun.song@linux.dev, rppt@kernel.org, paulmck@kernel.org, pasha.tatashin@soleen.com, yosryahmed@google.com, yuzhao@google.com, dhowells@redhat.com, hughd@google.com, andreyknvl@gmail.com, keescook@chromium.org, ndesaulniers@google.com, gregkh@linuxfoundation.org, ebiggers@google.com, ytcoode@gmail.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, vschneid@redhat.com, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, 42.hyeyoo@gmail.com, glider@google.com, elver@google.com, dvyukov@google.com, shakeelb@google.com, songmuchun@bytedance.com, jbaron@akamai.com, rientjes@google.com, minchan@google.com, kaleshsingh@google.com, surenb@google.com, kernel-team@android.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org Content-Type: text/plain; charset="UTF-8" To avoid debug warnings while freeing reserved pages which were not allocated with usual allocators, mark their codetags as empty before freeing. Maybe we can annotate reserved pages correctly and avoid this? Signed-off-by: Suren Baghdasaryan --- include/linux/mm.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index 27ce77080c79..f5969cb85879 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -5,6 +5,7 @@ #include #include #include +#include #include #include #include @@ -2920,6 +2921,13 @@ extern void reserve_bootmem_region(phys_addr_t start, phys_addr_t end); /* Free the reserved page into the buddy system, so it gets managed. */ static inline void free_reserved_page(struct page *page) { + union codetag_ref *ref; + + ref = get_page_tag_ref(page); + if (ref) { + set_codetag_empty(ref); + put_page_tag_ref(ref); + } ClearPageReserved(page); init_page_count(page); __free_page(page); -- 2.40.1.495.gc816e09b53d-goog