From nobody Wed Dec 17 18:00:52 2025 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 439B21A76CC for ; Fri, 13 Dec 2024 21:04:44 +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=1734123885; cv=none; b=HKgEIWn/Vd9PcJCuBgO+yYvF6i0bEUofuPWdXz54z8sjN/0OtsTzYrctSRQ8RcCcHBS/Mw+XyZjTPCFVtwCi0DxEGxJAZO+v1m8YBILcJa+6gpE9Yqg4HpdL4NAHEQmqPqA7DZLgJgjzcMx5sV1+k1jaNk95j9NPEDw79fgr7DI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734123885; c=relaxed/simple; bh=9WsK29GipO9NFsc3hIC2PewS3A5xwy+nUOe36/bHbco=; h=Date:In-Reply-To:Message-Id:Mime-Version:References:Subject:From: To:Content-Type; b=iLhfYa9rkPs1NN2+MYU1MOczEFHrfkH4ekWP76C2tEn6Yo7OP4xMW+NNDht+mZ4rwQ+Dy72jx4dFfzEUE6OPQRQYxpDf10nZbl1TR+FZ6AywR909Hy/FE1rTGUz59uwzVeZdd1MeWz6duvjOxMQPeGUOJcZmfENKVAQWqA1NaCk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=fVw56T1W; 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--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="fVw56T1W" Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-6f013249180so42998557b3.0 for ; Fri, 13 Dec 2024 13:04:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1734123883; x=1734728683; darn=vger.kernel.org; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=ZmmTceEXI49vAlTZsXzZ0kDXlU3YmEJweJHtvtDSTLk=; b=fVw56T1Wn/gfOSCeDetmk4e6M794RU3h6CkdCEk7SKpqbgtdChuB2kX7kwrwz58hlg NzAkhu/v4G96mrxYwcMMgSBeW05ZY5neAnmIZhDfyshBywal8jcbz18eGy2xT1q6VbYK SY0w9Nf6g6l4hvQGqv8QWmP0Pt2dWPBlUr+dfM41LJ1aGOUH6x4rnDQxHYwax8KPgi6t 5JQ7bNYd1+JwF4O6HpbAxSzszpK/P/L8eDpvit2n9+ggh230OgR4ZvBQMX8UwKywLbPH E5YmxEc5w9HxE34WxeyRTW5rIXm3YlLrCErRc5Cj/KBs2l3ReMTzbiuP8hn8tuGnaGKg 9ecQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734123883; x=1734728683; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ZmmTceEXI49vAlTZsXzZ0kDXlU3YmEJweJHtvtDSTLk=; b=J/PpVAde/6vcEm5gVKQR6hqZm+obAYlb2wJlGoi8I/xNrnpX8blTl3KtLHtbtNFDb+ cYRnX3IrDNDp42bHyozuJeD9RDpnSs73Iav1iaN8mDjqBkDLKf+l69bohMScPu52zgUB 00Xen8LGiPjxaZXFUcm3h0eyBbPVjGDoXl/894NXun7xICPoNjYPJ/iZvaSUL0OGBCy7 AX9r/Mr15GZoWNLCKPod3lih3neY01NgSADQDzx6Tz8PBuMbSM/qYtctEEE2P3EwZ61l toCPoI05i6cIidKuHUPHJZZBLmMCFLvDIQjwkNZv5WIWdwoiMBfzJdkJ1Nr4wEd1mEDH t60w== X-Forwarded-Encrypted: i=1; AJvYcCWmA/s+5kZaVWzu8VvkAIURDkCrerHP0hw8vqcrc188pxXRPat+4s/os+jJQMqDt6tyvYHhNxOeS4bu77U=@vger.kernel.org X-Gm-Message-State: AOJu0YyRL4lI/l0DghoAuUXDSsABfiPLWNGe9F8lwuQoYO1fvWiA1z9s oRU5NSmlg8BgVsme0TM98MGnWLxKO8LiB3pWZBOFoC4Vz4rJQCBgwjPz2YtCq046fowJwEzXak6 JlAn9xA== X-Google-Smtp-Source: AGHT+IHpiKviovMECOth7u4kOhfEglD8RAZ2s+tFKqdgpPkBwtpkcy8GbhxAXictuSVtrav/UTjOTS2cR59l X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:9a50:5183:644a:3472]) (user=irogers job=sendgmr) by 2002:a05:690c:26ca:b0:6ee:61ea:a40e with SMTP id 00721157ae682-6f275c1849amr58497b3.2.1734123883146; Fri, 13 Dec 2024 13:04:43 -0800 (PST) Date: Fri, 13 Dec 2024 13:04:22 -0800 In-Reply-To: <20241213210425.526512-1-irogers@google.com> Message-Id: <20241213210425.526512-6-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241213210425.526512-1-irogers@google.com> X-Mailer: git-send-email 2.47.1.613.gc27f4b7a9f-goog Subject: [PATCH v1 5/8] tools headers: Add non-NULL assert to container_of From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , "Mike Rapoport (IBM)" , Wei Yang , James Clark , Howard Chu , Kajol Jain , Athira Rajeev , Ze Gao , Weilin Wang , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" container_of on a NULL may yield a non-NULL, confusion and errors. Signed-off-by: Ian Rogers Reviewed-by: Kuan-Wei Chiu --- tools/include/linux/kernel.h | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/include/linux/kernel.h b/tools/include/linux/kernel.h index 10f74f021d55..8d617467c5c5 100644 --- a/tools/include/linux/kernel.h +++ b/tools/include/linux/kernel.h @@ -38,6 +38,7 @@ static_assert(__same_type(*(ptr), ((type *)0)->member) || \ __same_type(*(ptr), void), \ "pointer type mismatch in container_of()"); \ + assert(ptr !=3D NULL); \ ((type *)(__mptr - offsetof(type, member))); }) #endif =20 --=20 2.47.1.613.gc27f4b7a9f-goog