From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-178.mta1.migadu.com (out-178.mta1.migadu.com [95.215.58.178]) (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 AD005D530 for ; Mon, 28 Apr 2025 08:30:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745829038; cv=none; b=u9Lh3mPpcCUaSaYxkw3+rKFQw+BOgO4MSRHGSmUHHnBkFSRWgmfJ9i7N4meP7BWMNihauUdoXWZf9Epc2ZPeytwrGktIKmltq7suIHieMM7K3f0KDcvU6XVqPje4sd7izbwkAV48HmF4B4vX+q5oVGLzgr5ndLhr7wuC0xjTl6w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745829038; c=relaxed/simple; bh=XnizB9100UNA68Nhrc/NPH0GHRaRUl3WPQShtsDYwHI=; h=MIME-Version:Date:Content-Type:From:Message-ID:Subject:To:Cc: In-Reply-To:References; b=FGDq8ze7HZ18dHHqyWboHZMu4hYuQW6VAn4sQoyjM2KWwd3288AsKq/yOCs4NwkGr6V3qZDTfCaWNhKPCanLJtYO1uBaYytTyhJYh2d7kwkT3FQPRV1BcfzJUeBay2lfeOwZ1gDLBqRq0hEG5z5PycNtgTY4odh+Vr/v4OkfdKc= 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=q/87Crtp; arc=none smtp.client-ip=95.215.58.178 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="q/87Crtp" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1745829034; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OfSbmzDs/o0LQ7Atw6SIKmR3v4ivn9bHhtZs1yGAZZA=; b=q/87CrtpsyJ8M2YC/zH4KQ/bpMf4u2N4OXQdJCZQ68guxuzAhOq+mymE1jGMGPn1dCgYoA C8HpXLjVkQjixc5ZqNPmJ+B7Eaog6h98GW1ISN0ZX8hOpQmVk8K3AhgFwSW9gcnSfRAUB3 VvF89ZUwE3hxL8M+/drxRQTIOZ2lEg4= Date: Mon, 28 Apr 2025 08:30:24 +0000 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: "Jiayuan Chen" Message-ID: <7adb633683ed40587a379260857c7a48ce69638c@linux.dev> TLS-Required: No Subject: Re: [PATCH v2] pid: annotate data-races around pid_ns->pid_allocated To: "=?utf-8?B?TWljaGFsIEtvdXRuw70=?=" Cc: linux-kernel@vger.kernel.org, mrpre@163.com, syzbot+adcaa842b762a1762e7d@syzkaller.appspotmail.com, syzbot+fab52e3459fa2f95df57@syzkaller.appspotmail.com, syzbot+0718f65353d72efaac1e@syzkaller.appspotmail.com, "Andrew Morton" , "Christian Brauner" , "Lorenzo Stoakes" , "Liam R. Howlett" , "Suren Baghdasaryan" , "Wei Yang" , "David Hildenbrand" , "Al Viro" , "Mateusz Guzik" , "Oleg Nesterov" , "Joel Granados" , "Bill O'Donnell" , "Darrick J. Wong" , "Frederic Weisbecker" In-Reply-To: References: <20250425055824.6930-1-jiayuan.chen@linux.dev> X-Migadu-Flow: FLOW_OUT April 25, 2025 at 17:25, "Michal Koutn=C3=BD" wrote: >=20 >=20On Fri, Apr 25, 2025 at 01:58:14PM +0800, Jiayuan Chen wrote: >=20 >=20>=20 >=20> Suppress syzbot reports by annotating these accesses using data_rac= e(). > >=20 >=20 > Thanks for trying this approach. >=20 >=20scripts/checkpatch.pl has quite some remarks about the current form := -) >=20 >=20I mean, the data_race annotation should document why the race is >=20 >=20harmless. I only glanced over this so I can't tell myself whether it'= s a >=20 >=20bug or OK. >=20 >=20>=20 >=20> Reported-by: syzbot+adcaa842b762a1762e7d@syzkaller.appspotmail.com > >=20 >=20> Reported-by: syzbot+fab52e3459fa2f95df57@syzkaller.appspotmail.com > >=20 >=20> Reported-by: syzbot+0718f65353d72efaac1e@syzkaller.appspotmail.com > >=20 >=20 > How can I get to see full syzbot reports? (Stacktrace would be helpful, >=20 >=20I cannot resolve those as message-ids on (LK)ML.) >=20 >=20Thanks, >=20 >=20Michal > Hi Michal, We can find such reports at https://syzkaller.appspot.com/upstream/s/kern= el