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[147.75.48.161]) by mx.google.com with ESMTPS id u8-20020a170902e80800b001e2736395c6si5152283plg.53.2024.04.20.07.40.24 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 20 Apr 2024 07:40:25 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-152296-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161; Authentication-Results: mx.google.com; arc=pass (i=1 spf=pass spfdomain=i-love.sakura.ne.jp); spf=pass (google.com: domain of linux-kernel+bounces-152296-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-kernel+bounces-152296-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id ED28DB20D89 for ; Sat, 20 Apr 2024 14:40:21 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8BCCD219F0; Sat, 20 Apr 2024 14:40:16 +0000 (UTC) Received: from www262.sakura.ne.jp (www262.sakura.ne.jp [202.181.97.72]) (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 CFD7FDDCB for ; Sat, 20 Apr 2024 14:40:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.181.97.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713624016; cv=none; b=n4FOW+jliqgLxCfa6y3JZiB6DcCvWRxOOQw8l1qCjQ5dLww6OouxfryYO9VWEY0QXlfhkId0F4OKnITzfuwX5iDYgMoYd6cpxbBf1o+nR7wxTDTkTl/ysvbJZivwF7Xc7O1L9VHW2MSAmHP/i6mb/8mMx2TsCYENb176wTqb5fQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713624016; c=relaxed/simple; bh=MrauLE7vTIJ56o0G5yI1/rmSGSVS4GvOYwtIC8oySNA=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=t+frmvWqsmPLY6b3Se+/Hxnn09xKTtqhhccMYqT8TVWQShEijmEIw/iBzU5tP3mNN5ilNpY3wuAYG4H4+QCXaMTHPySAt2HHBt4QB5WLQ/TLD6Ljil4nvKgNM7e5hBlEBhGjcwj+0estu2gBYq9ooVRguKUiwCju1U1M6ed5n1M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=I-love.SAKURA.ne.jp; spf=pass smtp.mailfrom=I-love.SAKURA.ne.jp; arc=none smtp.client-ip=202.181.97.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=I-love.SAKURA.ne.jp Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=I-love.SAKURA.ne.jp Received: from fsav117.sakura.ne.jp (fsav117.sakura.ne.jp [27.133.134.244]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 43KEe7uc034455; Sat, 20 Apr 2024 23:40:07 +0900 (JST) (envelope-from penguin-kernel@I-love.SAKURA.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav117.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav117.sakura.ne.jp); Sat, 20 Apr 2024 23:40:07 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav117.sakura.ne.jp) Received: from [192.168.1.6] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 43KEe7Ka034452 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NO); Sat, 20 Apr 2024 23:40:07 +0900 (JST) (envelope-from penguin-kernel@I-love.SAKURA.ne.jp) Message-ID: <06f69472-46cb-4512-9b6e-9c9c7eca24c4@I-love.SAKURA.ne.jp> Date: Sat, 20 Apr 2024 23:40:07 +0900 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [net?] [bpf?] possible deadlock in __lock_task_sighand (2) To: syzbot , linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <0000000000007b33c00613f64d03@google.com> Content-Language: en-US From: Tetsuo Handa In-Reply-To: <0000000000007b33c00613f64d03@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit #syz fix: bpf, sockmap: Prevent lock inversion deadlock in map delete elem