From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (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 5821255C0A; Wed, 4 Sep 2024 03:57:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=150.107.74.76 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725422241; cv=none; b=BBzEJxhake1zpfMf+jehRzt/HrdpPSN0lYDgi3dCvOnRoySGKgabLAeaPMYNsf33IXBluWrx3nGshSVjArOA7bxeeE3a58SGMXpeRsXMmZ8+7JuRKjsFLknV4BTvhl5r6nEnsoF693WuNgQgNWgJJdS2Q5uNnb4wWpWHBFthaNk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725422241; c=relaxed/simple; bh=ivqHfD7++rU9GRfQMe9anuXwU61tfPP8YPdfV7dcgxQ=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=Kln/bl+BsS5WHEUyu2Ckl4Y/xbVODcJnt2GOS45D/tymI5hoXf/Y67N2qbEeiYFWOjoMiI3GRqcg6y8EXpZAOSGrOAKArI29bhFRt+MptvHGnePF6xk7nt2xtJTKJ/8hJcXKB3zUGK1qGNWg8rdfgLu/pdO8vAw3do/rfsgvkeg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au; spf=pass smtp.mailfrom=ellerman.id.au; dkim=pass (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b=U9J8vsG8; arc=none smtp.client-ip=150.107.74.76 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ellerman.id.au Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b="U9J8vsG8" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1725422236; bh=bgCwdbOVFpaURv00hqL/lwUSISFJ/jzYxJlaNGAU2OU=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=U9J8vsG8Uwv1/84l2ookX17o1153/WflTXx/rbatcB7lhtIPmuCRHMrYQduxy8sct pVfA7mdd1ZdSsNlV9S+RwvrFTe1ZwE8Yon0RjMsD+vnj7wI36uMucOCgR6BBEC/zgi iZK0fUTnkmSuZ9Ccc8QVwLnPaoeDvMO9IDONDK0zcckZZRDi5uw6O2wHSQUKmdfr5I dWdLKVexdDb5e0RhatBid4K2SaIn7WsfhusEW3ggxFSRdNk+UNioX+yKzoLnyldVe/ pT1Pfg6L4UctDia37ve7aVklQue5bWVDtiZxTaywsBpq6I+0m8550pLqCeuVpgK7WU QaOkMGqL0YMAg== Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.ozlabs.org (Postfix) with ESMTPSA id 4Wz7wp3135z4x3J; Wed, 4 Sep 2024 13:57:14 +1000 (AEST) From: Michael Ellerman To: Sven Schnelle , Andrew Morton Cc: Masami Hiramatsu , Oleg Nesterov , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , Linus Torvalds , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org Subject: Re: [PATCH] uprobes: use vm_special_mapping close() functionality In-Reply-To: References: <20240903073629.2442754-1-svens@linux.ibm.com> Date: Wed, 04 Sep 2024 13:57:13 +1000 Message-ID: <87v7zc5aw6.fsf@mail.lhotse> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain Sven Schnelle writes: > Hi Michael, Hi Sven, > Sven Schnelle writes: > >> The following KASAN splat was shown: >> >> [ 44.505448] ================================================================== 20:37:27 [3421/145075] >> [ 44.505455] BUG: KASAN: slab-use-after-free in special_mapping_close+0x9c/0xc8 >> [ 44.505471] Read of size 8 at addr 00000000868dac48 by task sh/1384 ... >> [..] > > As this has a dependency on your special mapping close series, do you > want to carry that with your patches? Andrew has my series in mm-stable, so I think this should go into mm as well. I assume he will pick it up. cheers