From nobody Sat Jul 25 01:24:10 2026 Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) (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 8A2DB3976A7 for ; Tue, 21 Jul 2026 09:20:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.70 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784625615; cv=none; b=SFscOn6XyNiGeOYMXdSAYnDqFIrIgbGIgqcZF5FQm5pDZc0aqRIXnnBx9CQSY1we2lZf/ajeKx5mFOQbgyQvPLQXIvCinF0E6ckgiJjLtoMLwUwijHNWVdg/8KPCg2hh0f8Nq6341oi/vGeywWVFq8/94ziLH+B4YYRem5pgbcA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784625615; c=relaxed/simple; bh=at9hdT8QpAhgSRfweg8FfOslePU9fTU+iITAFqhyzvo=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=hD9cj3pp1IcPFBYBl42bwcI3KSemZhbW5FAUgEzUsHF8vOxKBDqRW25S6HG6kHh7ePEFApL1qDNrRTfphu8HtxsMtyCnZSQzenBZSWEsgpX92DiWaM8moGMb+KwMXFqrPMN5UiVm8hiiD/ggMvCJkNGdj/UA4r/SRZMPKBHT6rw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--elver.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=gj9mwDNQ; arc=none smtp.client-ip=209.85.221.70 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--elver.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="gj9mwDNQ" Received: by mail-wr1-f70.google.com with SMTP id ffacd0b85a97d-4729d2a64efso2834616f8f.0 for ; Tue, 21 Jul 2026 02:20:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1784625612; x=1785230412; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:mime-version:date:from :to:cc:subject:date:message-id:reply-to:content-type; bh=mNzxuyo7zY8DBbMGXllxmPQe9PiD3EoZmPKiPpb3nLo=; b=gj9mwDNQ4B8bhezNRFmTR7usWJsw00wlY8FvVTLEs6szwvgxfceEQLhnoJdmIxQDKH ZgCrQoef7ZFJRPbfLcaImTOPiisvmLCnS+Hj+9W+MUqEeVTAlfjCRYFOQRpdoez2O4qX iwHTFOMJEAvJIcB85Ii5vgfQ8NsdiPBvkYlM+jxaTOJ7ExvFK/kOUOGkXtEKJvSUhbjq Y7AXCZsC4Zgmwp7OmAe9yrDFlaoI2HEHTL2CDs9apNUBqtzxM5mo8B962Mgf8//gSN6p SXKs3h8exQnM0V892VkjTfVZY4Tm8+rVnVDYEHo/tdLohWEzAsKJ+aaEqWoAPrO1HmSZ 7mNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784625612; x=1785230412; h=content-type:cc:to:from:subject:message-id:mime-version:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=mNzxuyo7zY8DBbMGXllxmPQe9PiD3EoZmPKiPpb3nLo=; b=UnTVBaTyU7+hC4K8M6V0952HSZTmbqYhH9+D4YyvEaah0Cr/v3DPuCRZiGnaKRGJzh /Qz+eXplTx6/z/NsWIqFc4I7SN21sgNdErLbXcJ1AUZQjHz9w9sBBd+dnJt2/RUM4X9d /aXcSrcJxYh6+z5eR2GY+VSYKM1MKFPtByafPKWv2XEf4mYqise9CkvcT5NmQKsJjLuy W2ecwcRC0u+6OcN1r01rGgxzZaQlpPbc/z4+Shi7QHKfkjFEgNvMtmW04E5ikW1+JJ/k LVJMIwcpss+c7ywbj7D03B76/fVAOudC01rXhC+gEe44cgpGOL+JqXhvgSuDRGCHUiKs fuSw== X-Forwarded-Encrypted: i=1; AHgh+Rp0A2v1L9GjBO/bx6zyIALdJNZQP+BSyXZWN+dZghe3AoB7jO5L0rvTEWnId/tnIdPLOINmAbDXwlta0uI=@vger.kernel.org X-Gm-Message-State: AOJu0YxYZ7VhjbLEO0T0FRoOCOFXUtaIHImFHoU8QM6r5e11L2ZXrfD+ PZv46M9KcUWFiN39vwqq8O66VOrAKaEDCC4r+asJSDm7LIrjGaLGrnn4pDrBOq+hrjiJ4cijawl ARA== X-Received: from wmnu26.prod.google.com ([2002:a05:600c:441a:b0:495:4b05:6e35]) (user=elver job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:64c8:b0:495:6934:4146 with SMTP id 5b1f17b1804b1-495693442d3mr558735e9.11.1784625611424; Tue, 21 Jul 2026 02:20:11 -0700 (PDT) Date: Tue, 21 Jul 2026 11:19:21 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.55.0.229.g6434b31f56-goog Message-ID: <20260721092005.1986693-1-elver@google.com> Subject: [PATCH] slab: silence sparse warning with type-based partitioning From: Marco Elver To: elver@google.com, Vlastimil Babka , Andrew Morton Cc: Harry Yoo , Hao Li , Christoph Lameter , David Rientjes , Roman Gushchin , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, kernel test robot Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Sparse does not know __builtin_infer_alloc_token() and complains: sparse: sparse: undefined identifier '__builtin_infer_alloc_token' Fix it by using a dummy variant of __kmalloc_token() if __CHECKER__ is defined. Fixes: feb662d9168b ("slab: support for compiler-assisted type-based slab c= ache partitioning") Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202607110912.nZTqfCrH-lkp@int= el.com/ Signed-off-by: Marco Elver Acked-by: Harry Yoo (Oracle) --- include/linux/slab.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/include/linux/slab.h b/include/linux/slab.h index 51f03f18c9a7..7ffe152ce483 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -505,8 +505,12 @@ typedef struct { unsigned long v; } kmalloc_token_t; extern unsigned long random_kmalloc_seed; #define __kmalloc_token(...) ((kmalloc_token_t){ .v =3D _CODE_LOCATION_ }) #elif defined(CONFIG_KMALLOC_PARTITION_TYPED) +#ifdef __CHECKER__ +#define __kmalloc_token(...) ((kmalloc_token_t){ .v =3D 0 }) +#else /* !__CHECKER__ */ #define __kmalloc_token(...) ((kmalloc_token_t){ .v =3D __builtin_infer_al= loc_token(__VA_ARGS__) }) -#endif +#endif /* __CHECKER__ */ +#endif /* CONFIG_KMALLOC_PARTITION_TYPED */ #define DECL_TOKEN_PARAM(_token) , kmalloc_token_t (_token) #define _PASS_TOKEN_PARAM(_token) , (_token) #define PASS_TOKEN_PARAM(_token) (_token) --=20 2.55.0.229.g6434b31f56-goog