From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (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 B7E0D6088F for ; Wed, 6 Nov 2024 01:09:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730855357; cv=none; b=W6E22KJ3JjLN49xh2NTr0W5owxZOT7Q7N8dg85ON3de6S4MeIqUgMXi+vllku9Gc3kgQYb9unqV8wLBaVF0X8iYtFb91HoCBQuGu7aIFDPGnsc7zvkbBEL8K95zQXvJOeT7dnEpfTrb1U54ho5N3+X0gyDM0gubrDdbOUu4kxg0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730855357; c=relaxed/simple; bh=m1jPRgvwaVt0Ji0K64vPZOJS/AW3EobWcVHaJ+6e92c=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=u3vu87OsvYLi8/eIFL0Zv7agC7LpYSI3IXGH4Fi+PtbxRapUl20O1+hPB/UmyGfjoqL2pPz1sssj9Br7wXLngfO+VT7dR4UWLorddkyF0QWWlk4tLZm16aZL5glY/V8KW2kjJGUuuzBKjvFaW52ipCRfujOaXG9RGaq21po7XoE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=F5YZj37e; arc=none smtp.client-ip=209.85.214.202 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--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="F5YZj37e" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-20d15285c87so64504435ad.3 for ; Tue, 05 Nov 2024 17:09:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1730855355; x=1731460155; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=mM/JOg5R9b+FWm0W8b94lT0depobNUxyZ6mpenVonLw=; b=F5YZj37etMbDFkfq+xPkgdawXcWhpwlf09vsOXLU5h4XV5+HEdNpH+9t8dagp4Kt7l acfHh99oribWtl67RAQFqFIOMmFWBGTm8alpJltgHhn9qpi4jwdAhGwQUQsybgdMb1wZ d7YsVyyoTrtR//KP1TEMnB7qltSI4WDhNFy0+4VUHoY/qiY0yLLJgEIMYPufiduzzYbh zQ935BI96vcnkyWVChDaRdTvOEu5ziJzi9yceHXHwhKPhbGMtYoJkS98eFFbRUrvDzzM 2ynCpwWDMWe8upF0JMJAYRtaFa7M3oTvGFm8Z8uHmn2fdxzfmPaMDVrXPGiyfLFAaHEw 2chA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730855355; x=1731460155; 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=mM/JOg5R9b+FWm0W8b94lT0depobNUxyZ6mpenVonLw=; b=s1Ap6atmoIpJrddetO++pfvnaY1n+9mJ645ZpCI0w7H1Q7Amx7uC4un/92sX0SlILJ WVI30WeEChcgwS/8iGueTTRyCaqDhWwOFmgiGzG4x/f1Qh0ydrVEh3flNDU0F3RrkEwK mm9JYXQy0OMIHJHixDy1E+Iihl3X/6lY8XF8Mb1k8pRcnxQKulfQgXRg20aB5L4Dpaxg LNnRMmmwI7b/n8ok0+EvlHRYqBcHrDW6HK0d5RcQBsCD7exqkZpo+1kI1Efn2vglTUKW Uzqdfnpvqg2vU/JvRlK/dVOhUwslwXEciaRLo4HQTqI3vOsgrrFc5Z437wHiErDr+3y/ bjiQ== X-Forwarded-Encrypted: i=1; AJvYcCW7OjEPOxUhisnNdQ1NeRBmTt9idgms6QtGo51/qneK4/3AVGAjWwVSv4wn7702wZoIAVc3DeV7XSD8frQ=@vger.kernel.org X-Gm-Message-State: AOJu0YxUpdvnIUz+pMK0FpMa5Mmh8nv6RrPXIXGQ954uqkz7lJ8e/ORc lVpRHmAN+RmuMKN7AhKq6NqgAA1CS397uECW+nKOK7UDensRJ4XlTTx5C6HFtkOeNW2uXeJPdFk FYQ== X-Google-Smtp-Source: AGHT+IGwBu+onCDNn0Y32ZVpfpCe4rwxG/l9NILnSH55nW3/1oRdipH1Rgb6zMdW9xSxMW4+/zY3xYf4thA= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:9d:3983:ac13:c240]) (user=seanjc job=sendgmr) by 2002:a17:903:448c:b0:20c:c9ac:bd0f with SMTP id d9443c01a7336-2111aef735dmr281325ad.5.1730855354521; Tue, 05 Nov 2024 17:09:14 -0800 (PST) Date: Tue, 5 Nov 2024 17:09:13 -0800 In-Reply-To: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241021173455.2691973-1-roman.gushchin@linux.dev> Message-ID: Subject: Re: [PATCH v2] mm: page_alloc: move mlocked flag clearance into free_pages_prepare() From: Sean Christopherson To: Roman Gushchin Cc: Hugh Dickins , Andrew Morton , linux-mm@kvack.org, Vlastimil Babka , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Matthew Wilcox , Shakeel Butt Content-Type: text/plain; charset="us-ascii" On Tue, Oct 22, 2024, Roman Gushchin wrote: > On Mon, Oct 21, 2024 at 12:49:28PM -0700, Hugh Dickins wrote: > > On Mon, 21 Oct 2024, Roman Gushchin wrote: > > I don't think there's any need to change your text, but > > let me remind us that any "Bad page" report stops that page from being > > allocated again (because it's in an undefined, potentially dangerous > > state): so does amount to a small memory leak even if otherwise harmless. > > It looks like I need to post v3 as soon as I get a publicly available > syzkaller report, so I'll add this to the commit log. Today is your lucky day :-) https://lore.kernel.org/all/6729f475.050a0220.701a.0019.GAE@google.com