From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yb1-f202.google.com (mail-yb1-f202.google.com [209.85.219.202]) (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 1204354F9C for ; Mon, 18 Mar 2024 16:52:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710780745; cv=none; b=qdX4qVj52+oW49a/mMIJzeKynABckLfIIjpzB2+bR5atc0VeaXov28ULkqqVxXvI8vJN9aX7yMgf1a66yZ5qyRWZiwJBT1eI+cC6gHiOcyvJzTPGDRF1OyCWiqAlYQ3vbLTzbptUDZk1dq2rkxfq6yZZhDaK/j3Brh+Gi1BJnyw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710780745; c=relaxed/simple; bh=4MKKObN+QZLmpADBDsLo35UGZJZSTkcMmdglf5HQHEc=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=dq2jbnaaPPyLRpFLYylscYFXmciVgO/0ZiA2cPFxyAlZ/9i302BCOgPzOY1c0URxnbgFva5UNq3OWdY9YR2mA6lurX26MTPPCJLDPL5nmvC27nzsoDC42GpbrU8SJH60thGe40hAf2cbpbRTEhzuAzci0q/OcsEiVD06xLpw/JQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sdf.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=HMiaBRUN; arc=none smtp.client-ip=209.85.219.202 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--sdf.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="HMiaBRUN" Received: by mail-yb1-f202.google.com with SMTP id 3f1490d57ef6-dc6b26783b4so4563733276.0 for ; Mon, 18 Mar 2024 09:52:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710780743; x=1711385543; 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=z6oC4/UfrqqhlN2ad8fLsd1opVxrnNh05czD7jtxeg8=; b=HMiaBRUN2nx1cd/5733fMB9698Ry2lV9qtxg+r9J2uoYIK+btaSnMfW+eWb43bGawn 56FO+d5FZwfJO5dShyrcYOfPRFQNVMVuYo9Vyoe+MQ8R9vU4n3j5DCrPUzhPSGdR0fKc rSUaKbjvY5Z07lCj78ULNkQoNnvvjlR+chTmR3UctXL3cXlRWlLEMqDJZWsTFO4E3qGN BCUlBwXT1V4n6yAqv+zQWZSLSsTH7Dxg2V20IiOIuOLO4GYdak3tDGyUVx5mn+wdEoXE L7xYj/kdBjxyAdzHZdubsUTlzjSBhmRsPbhsrFk2UmLDymZu1eKGDH3jGZwn2bIjC3iX eHwg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710780743; x=1711385543; 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=z6oC4/UfrqqhlN2ad8fLsd1opVxrnNh05czD7jtxeg8=; b=vmZUlaLok/H0O7uHwK4R854eWV/2xNjfbEeDjVMQKAA8tVAnsrVatIBUIH5SAKLfbR VFkcu+oWjL5yXOfnS0GVR+VGE7mCqWeonMKyM+b+3WyDPkoWSA6HERienFTo3K++1IX+ WhS0rNpIPlSmNULP3FDMvYOm9pMXxOzstXZSRwRw6jUchm7Pjqhr/8DfCbwcVLD8SEsP ZkzdgnQxhrt7CfMtNB8OGFSyTPmSuNrVisEA+5yQHlNVZlnpmakjwSB8bc6+2U5/DFgh dR9dxYXSCSvx/4/wPHizq3jQmC6q8fiI/1GO7lXnmYgnAJerGGMKN1M/TskHC+zGXnKv iM9A== X-Gm-Message-State: AOJu0Yx8OSTGJVQGhx38ew3P3IscicqX1F95o/Wm6Lhrdl5QzCVjgOdM TMJHaffFtdy28TptqZN5loGj75pfDswxV6D+F2nqxCaX6Auj3eAeSCPrbmHtGnD+7Q== X-Google-Smtp-Source: AGHT+IFwtgRLh+lulVILDQ2/kd3DMW6sId/sUd5zrH4j2mpdHUbzWXnDOIg+pvw0ZwuWDDljjPfWn/I= X-Received: from sdf.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5935]) (user=sdf job=sendgmr) by 2002:a05:6902:2201:b0:dc7:3189:4e75 with SMTP id dm1-20020a056902220100b00dc731894e75mr698804ybb.3.1710780743058; Mon, 18 Mar 2024 09:52:23 -0700 (PDT) Date: Mon, 18 Mar 2024 09:52:21 -0700 In-Reply-To: <20240316122359.1073787-1-xukuohai@huaweicloud.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240316122359.1073787-1-xukuohai@huaweicloud.com> Message-ID: Subject: Re: [PATCH bpf-next 0/5] Fix kernel panic caused by bpf lsm return value From: Stanislav Fomichev To: Xu Kuohai Cc: bpf@vger.kernel.org, linux-security-module@vger.kernel.org, Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Hao Luo , Jiri Olsa , Florent Revest , Brendan Jackman , Paul Moore , James Morris , "Serge E . Hallyn" , Khadija Kamran , Casey Schaufler , Ondrej Mosnacek , Kees Cook , John Johansen , Lukas Bulwahn , Roberto Sassu , Shung-Hsi Yu Content-Type: text/plain; charset="utf-8" On 03/16, Xu Kuohai wrote: > From: Xu Kuohai > > A bpf prog returning positive number attached to file_alloc_security hook > will make kernel panic. I'll leave it up to KP. I remember there was a similar patch series in the past, but I have no state on why it was not accepted..