From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-221-205.mail.qq.com (out203-205-221-205.mail.qq.com [203.205.221.205]) (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 07F4214AD2E for ; Sat, 4 Jan 2025 06:00:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.205.221.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735970459; cv=none; b=kJA170vcocm+IfcVPSWiqfye6CNO2hdUpSOfyyCOsUhWTYFB/RFxTsJd8MENAqg8IwLkpEWfHMA1M781AGedBMYDiJeOWPG1g7MQXxBxedBoFchkd3J1tyrv33Ymm4t4Nc/fwMbed8ej2LkC89VntAw6ODOEUTRQIo5reQBT6RU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735970459; c=relaxed/simple; bh=z4g6g762edN/mF1Jwy0hWnzRwdiwoG9LiGJsSDL/hWc=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=KnlxH2cObTqqusUvibkpA/HqQ/4xxdnVX3EGxwcG53nB4XE3wl16qNiNvgIIkkwT9Nt3+wUZVku/NDgXDvccPPvKF/9Bis+5nWUZ6iz6oatMiwnPIghmPTCNT8karFLAFXKGCldVPg2BiWW1ICyN497HpCBGIJxpuZ1gPqvWPtI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=YWbJuGYW; arc=none smtp.client-ip=203.205.221.205 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="YWbJuGYW" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1735970452; bh=z4g6g762edN/mF1Jwy0hWnzRwdiwoG9LiGJsSDL/hWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=YWbJuGYWtcOFXeG98emfLOYkq1TronfAiAqm7FrE+C21RlqESAPLH8yjd4SrbNQdx ALXDrs3x8MG/CQjh9yXh8jnWoQYk1HPXgy5nk10UaQviEgxxupu2IpFhc8sicZhfyT ztU7VSq9H7DLhMSarHPBDyjalv+is31LEJwdt040= Received: from pek-lxu-l1.wrs.com ([114.244.57.34]) by newxmesmtplogicsvrszb20-0.qq.com (NewEsmtp) with SMTP id 32322FE; Sat, 04 Jan 2025 14:00:50 +0800 X-QQ-mid: xmsmtpt1735970450tg4i25wuv Message-ID: X-QQ-XMAILINFO: NR25d0ihy8j1umAuEAufhk9symEmw02zmnagWYtuT3USJvfd7LarvwH6/UjuLE qY2lWIK6ONfgdw9/ONHP2RqgF0g9kAhlsurkQj1hyL9Hui/5RZAfIz4E2p5icIchnx6XTYcN5+QX 2IEcujN/I1x2SXP6monu/kIYZiO9vv0iRiADlqjDE5ExNablk1S2ZT3BO/cMY9MUjDPs1twYiWip L2jMz6B7cfJ8zbWY673V1cchs0x5Ee/8BXSOn3HiKik3GyemOQ7e6bmifR1L7UOpoz/2kE9JvZqu yyx/Gp/+ya5fs0+6otv8SJLJOcFM09IHMixwNNTshdWlvF1CGVpkNNZVJkUj1Hy9R86LcC85Nm6l zafzS6aZhOQm7OQZl9iqDlHdfA1EprPz8osJaYdMJ3lawT0KOipIPitnoBc4kx3Mv6nhWw+UYMBx uUsFg2es5IGkdMflmekEGAoTOXlXhB92uymn5ET1nOrDAWmyFutND4Q09x4WUPduJ6EPKP9W/Kvb OZ/2x8Dt/28TiLAjDLDysdHCE/CYLHPMRwu+UJaRdXel2JlgUWEpEM6hZO5m/HlFQo6Jquk8PMdw dEg8UNjCRj/aPm06eLnyUfgo2abN4yuK2E1eIkUq0OpjohvNrnV+tU/i2X2qpEq47qeNG5UovZ2f THJwat0PmbfKLGBcUvqmKcI5qtr5N3Kq/H5/qnyex3rfsHNk/my43fKllJvZBgB0exkJs9L4VCot z13O6Lj1HtzBXzeKqPlEA5T06ZlTsmCxGR5Obi4BwlHP2XXEWuVcIs8ThZ2g039MlCY4T0q070GR rBhlSsrLil5VvNdw/ZQtwRej7Ay72NqzW61kFeszzWHqCyZu2jO8eA1Ydd2U1U3oqEryIGUpTuhO hcWaTFGeKv1vWmQxN3vU0QDaLq5sNLOdnCiXPNWd89l1ro4rj9eH7WPX1DjmPYQAu0LlWleTAxcw dHdgLzAWJLemb8YfjLA8Xgpm7xnhILJCfDI+dQsH9Jb68zvKL1g+Gwewgd/BT8l9yDYmRHI2A= X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= From: Edward Adam Davis To: syzbot+2e65930fda17880da336@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [kernel?] general protection fault in proc_sys_call_handler Date: Sat, 4 Jan 2025 14:00:50 +0800 X-OQ-MSGID: <20250104060050.440867-2-eadavis@qq.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <67788cda.050a0220.3b53b0.0042.GAE@google.com> References: <67788cda.050a0220.3b53b0.0042.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit utsname: debug ctl table for domainname Before exit_task_work() is executed, exit_task_namespaces() has been executed, which will cause task->nsproxy to be NULL. #syz test: https://github.com/ea1davis/linux proc/syz