From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (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 7BCD720CCC9 for ; Wed, 15 Jan 2025 11:47:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736941625; cv=none; b=FHabYwCk/ZsVurF25IfHxYweqQJ45PtZ2lRV13PWJ3nfPOzqf0KfcTkUAonbEdsV7Y8ZgmRo2HQhQXez1FeLCM4hPh45RykSwQhNk9fv0kh9Kti1N/DcamiMLHCIdyXpoOUUk/UGbSpUY1gffY733+zw593TZJ8WuKZCxoe3uUc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736941625; c=relaxed/simple; bh=/1uFD+772lAt1hJfYVdZ7oeg/thMmcYi5G7yE5q11iU=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=SY15jcrr+CgvSMdoKWw3ICfnHWCH45sidewPqhlcRUx8YQGAuAi3+CUl1cAmnZHtMv95hAWY/u0ciAiUYuf7IG4JAEI98Usm6Q7xmr9UQ14t7fgyHzcy7XU2JD3x2gMToNOiQzccLE4OEs3FE70R8yAUWK67XyCvS5HEXFGWfIE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-849d26dd331so63634439f.1 for ; Wed, 15 Jan 2025 03:47:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1736941622; x=1737546422; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=7CD8/bky+uBTitY/VMmrxb7nNioNYcVEol6ONXDjRus=; b=qAl/k0cHo+Cj/84cesha3fiajt5pOS9XfrqePulJ3TsCdchzMU+RN9RUNxyHn16j/k JUImdrcD4O+OKLU9jxjn4SIijCPz1DzJthZIxFsKTKha1HzbGNnVn2dRJH3HtkyXqfo1 DbKmobm1X1XCGuyoK1VXXWSXB6GgYg+h2JsDi2CULCXgSl2lnzkdC5EYlpo6lFsFwi/+ +kJ+2b4QZm+lA65RBQTiDtrRjRE/uIBaHNoTKQUunophXT7LW2bsSK5YBs0htKuGG9kR T5z+EVMnqkimDh4GC8aJeChgXFN36B4fpe6MCpwZtkkOzgx1vh+Jgd7ny6DPI+KhcMZJ mcqQ== X-Forwarded-Encrypted: i=1; AJvYcCUvvKrItr6GRf4IkN8Uco6sUTJmusMrHoSztc1KWk6nGI8Kb0ICA/kB54DdaB5avuf4dN8=@vger.kernel.org X-Gm-Message-State: AOJu0YwHHQA035fRzlEgWubldwdkizWSKltmL7L65U5nd+tWJJS2i1mv 8mmCfuauBVhCcA4vSgVBeoMC6j4DrMjokZMs6R55DtmfpsPwwULY417SXYjIoksnjkyqX/dhT/g VzWZ7zHQHEhGnL0TI+76lwX+p9ZCQimzRtgnISydSOcTTA+Vg3b06bzg= X-Google-Smtp-Source: AGHT+IESRd48rHGhudr/W5hTp4VTLrRNTk1+2Ra6errEaQt8aLT30h/PAr+bUUEcI7mPJrigCPSOnyk0dxCyxgomNR6tKHtcwEEf Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:20e3:b0:3ce:7cc9:9f46 with SMTP id e9e14a558f8ab-3ce84a25bf6mr18998895ab.9.1736941622558; Wed, 15 Jan 2025 03:47:02 -0800 (PST) Date: Wed, 15 Jan 2025 03:47:02 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6787a036.050a0220.20d369.0012.GAE@google.com> Subject: Re: [syzbot] [bpf?] [trace?] WARNING: locking bug in __lock_task_sighand From: syzbot To: alexei.starovoitov@gmail.com, andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, haoluo@google.com, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, martin.lau@linux.dev, mathieu.desnoyers@efficios.com, mattbobrowski@google.com, mhiramat@kernel.org, puranjay@kernel.org, rostedt@goodmis.org, sdf@fomichev.me, song@kernel.org, syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: lost connection to test machine Tested on: commit: c547a7b6 bpf: trace: send signals asynchronously if !p.. git tree: https://github.com/puranjaymohan/bpf.git bpf_preemt_fix console output: https://syzkaller.appspot.com/x/log.txt?x=178257c4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=aadf89e2f6db86cc dashboard link: https://syzkaller.appspot.com/bug?extid=97da3d7e0112d59971de compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.