From nobody Sat Feb 7 11:31:40 2026 Received: from out-182.mta0.migadu.com (out-182.mta0.migadu.com [91.218.175.182]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C927C6F2F2 for ; Thu, 5 Feb 2026 12:07:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770293267; cv=none; b=msBNrPnYMSqTlDnzvhmV2BwcoRkbhxFB1yL7qIF2OeqGsH4D+5s2/0lklwB/wvP0tQoACJhJ7pld5P12fZlctmx+oIkRhyCh8Tzqwa10aLQtKEYd01pi79OHGEkPcISHek6g4bj825lTUYnFepAXwq+X5vGagmQaIXkvjL1Qk0M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770293267; c=relaxed/simple; bh=RoqT6m9GrWC1R7f97EurLMogtwGcDPXGiSSlc9Hed50=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=oETDiLTXT19wLF6bw0lui7S1FUetzVoqADV2GpbNx26LaTPnFfPiptHbUwZEdJMwB815h7T/qY5GkSjqI4SAH+4orN+g8PBGXMFDd4bEZbwIIzWcf3UH70QKnL1WiFiStB5YFxzIdeVbXcnMXdEUBRbsFnWoHd//XJv4pmXbX0Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=bElHgJWO; arc=none smtp.client-ip=91.218.175.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="bElHgJWO" Date: Thu, 5 Feb 2026 20:07:23 +0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1770293264; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type; bh=HwXzgfSUWOHVbbonVH7nnw4Aoqzv+GZiKEzBXHPRk/s=; b=bElHgJWO15ORWXe1OfN3x4XDw0xJj+vuxH8HUv+UwikG8iSeZi/DoIwH9DDGK8LJ+noWxG v43wX6RoxgiGEYQex6RWpPX/2M8eaK7LFhtpoPKrFXEYD7NXf6JULcBiGYsDW6IpJtYR61 C+oH4OF+0BV/jDYw7RVQojEcweBDK60= X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Hao Li To: vbabka@suse.cz, harry.yoo@oracle.com, akpm@linux-foundation.org, cl@gentwo.org, rientjes@google.com, roman.gushchin@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, hao.li@linux.dev Cc: akpm@linux-foundation.org, cl@gentwo.org, rientjes@google.com, roman.gushchin@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hao Li Subject: [PATCH] slub: let need_slab_obj_exts() return false if SLAB_NO_OBJ_EXT is set Message-ID: <20260205120709.425719-1-hao.li@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline X-Migadu-Flow: FLOW_OUT Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" SLAB_NO_OBJ_EXT is set for boot caches, but need_slab_obj_exts() doesn't check this flag. We should return false unconditionally when SLAB_NO_OBJ_EXT is set. Signed-off-by: Hao Li Acked-by: Harry Yoo --- mm/slub.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/slub.c b/mm/slub.c index 865047eaf02b..3b1402e1c39d 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -901,6 +901,9 @@ static inline unsigned long get_orig_size(struct kmem_c= ache *s, void *object) */ static inline bool need_slab_obj_exts(struct kmem_cache *s) { + if (s->flags & SLAB_NO_OBJ_EXT) + return false; + if (memcg_kmem_online() && (s->flags & SLAB_ACCOUNT)) return true; =20 --=20 2.50.1