From nobody Mon Oct 6 03:16:30 2025 Received: from mail.nfschina.com (unknown [42.101.60.213]) by smtp.subspace.kernel.org (Postfix) with SMTP id 0C898230BD2; Fri, 25 Jul 2025 02:49:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=42.101.60.213 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753411777; cv=none; b=BDJTTRO2RzrNC79pTWxUdq5wQDejOoB6h/cexAEOBGMAaAI32PeYpiU1Puic/QDiJ7BgPF4ExKoAtHpwVW3tzqBW4iYV9phlwUYE/ZucjJufm0IQzri9uT8k2+1R50NQGM9tHGfFsqFrvcPaPNwLJtb0J6MIHZzoKdSJP3CDwQ4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753411777; c=relaxed/simple; bh=bu26tGuEinAdBeSGy8/0dQi7Mta9faIB03YdcSPptrk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=cixipY+vrtJo1qpWlc3asX0cSXOLlp0KrSfBQ9Xhp3JVTRqQ8XuUDgIH4TO4+7DI54VLCTDm0EQT9AJu6+se67fITryRHqdHmEoerq2Sq56g82V7Ix1F6ABah3CWf7JfQApt50Z65PP6EYCe0IcB0AW8L+FXIOyqTvWEWD1q1XU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=nfschina.com; spf=pass smtp.mailfrom=nfschina.com; arc=none smtp.client-ip=42.101.60.213 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=nfschina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nfschina.com Received: from liqiong-suma.shanghai.nfschina.local (unknown [180.167.10.98]) by mail.nfschina.com (MailData Gateway V2.8.8) with ESMTPSA id 82BB560187F56; Fri, 25 Jul 2025 10:49:17 +0800 (CST) X-MD-Sfrom: liqiong@nfschina.com X-MD-SrcIP: 180.167.10.98 From: Li Qiong To: Christoph Lameter , David Rientjes , Andrew Morton , Vlastimil Babka Cc: Roman Gushchin , Harry Yoo , linux-mm@kvack.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Li Qiong Subject: [PATCH] mm: slub: fix dereference invalid pointer in alloc_consistency_checks Date: Fri, 25 Jul 2025 10:48:54 +0800 Message-Id: <20250725024854.1201926-1-liqiong@nfschina.com> X-Mailer: git-send-email 2.30.2 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" In object_err(), need dereference the 'object' pointer, it may cause a invalid pointer fault. Use slab_err() instead. Signed-off-by: Li Qiong --- mm/slub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/slub.c b/mm/slub.c index 31e11ef256f9..3a2e57e2e2d7 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1587,7 +1587,7 @@ static inline int alloc_consistency_checks(struct kme= m_cache *s, return 0; =20 if (!check_valid_pointer(s, slab, object)) { - object_err(s, slab, object, "Freelist Pointer check fails"); + slab_err(s, slab, "Freelist Pointer (0x%p) check fails", object); return 0; } =20 --=20 2.30.2